Diese Studie wurde von Niederlande Heart Foundation Zuschuss unterstützt wurde 2000T038 (DJ Duncker) Zuschuss 2000T042 (D. Merkus), Europäische Kommission FP7-HEALTH-2010 Erteilung MEDIA-261409 (DJ Duncker und D. Merkus), Niederlande Cardiovascular Research Initiative: der niederländischen Herzstiftung, die niederländische Vereinigung für Universitätskliniken, der niederländischen Organisation für Gesundheitsforschung und -entwicklung und der Königlichen niederländischen Akademie der Wissenschaften &#160; CVON- ARENA CVON 2011-11 (DJ Duncker), CVON-PHAEDRA CVON2012-08 (D. Merkus) und CVON-RECONNECT CVON 2014-11 (DJ Duncker und D. Merkus), Sophia-Stiftung (bis D. de Wijs-Meijler, D. Merkus und IKM Reiss).

<ol>
	<li>Laughlin, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Peripheral+circulation.">Peripheral circulation.</a> Compr Physiol. 2, 321-447 (2012).</li><li>Datta, D., Normandin, E., ZuWallack, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cardiopulmonary+exercise+testing+in+the+assessment+of+exertional+dyspnea.">Cardiopulmonary exercise testing in the assessment of exertional dyspnea.</a> Ann Thorac Med. 10, 77-86 (2015).</li><li>Vatner, S. F., Braunwald, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cardiovascular+control+mechanisms+in+the+conscious+state.">Cardiovascular control mechanisms in the conscious state.</a> N Engl J Med. 293, 970-976 (1975).</li><li>Duncker, D. J., Bache, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Regulation+of+coronary+blood+flow+during+exercise.">Regulation of coronary blood flow during exercise.</a> Physiol Rev. 88, 1009-1086 (2008).</li><li>Tune, J. D., Gorman, M. W., Feigl, E. O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Matching+coronary+blood+flow+to+myocardial+oxygen+consumption.">Matching coronary blood flow to myocardial oxygen consumption.</a> J Appl Physiol. 97 (1985), 404-415 (2004).</li><li>van den Heuvel, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Coronary+microvascular+dysfunction+in+a+porcine+model+of+early+atherosclerosis+and+diabetes.">Coronary microvascular dysfunction in a porcine model of early atherosclerosis and diabetes.</a> Am J Physiol Heart Circ Physiol. 302, H85-H94 (2012).</li><li>Zhou, Z., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pulmonary+vasoconstrictor+influence+of+endothelin+in+exercising+swine+depends+critically+on+phosphodiesterase+5+activity.">Pulmonary vasoconstrictor influence of endothelin in exercising swine depends critically on phosphodiesterase 5 activity.</a> Am J Physiol Lung Cell Mol Physiol. 306, L442-L452 (2014).</li><li>Pereda, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Swine+model+of+chronic+postcapillary+pulmonary+hypertension+with+right+ventricular+remodeling:+long-term+characterization+by+cardiac+catheterization,+magnetic+resonance,+and+pathology.">Swine model of chronic postcapillary pulmonary hypertension with right ventricular remodeling: long-term characterization by cardiac catheterization, magnetic resonance, and pathology.</a> J Cardiovasc Transl Res. 7, 494-506 (2014).</li><li>Mercier, O., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endothelin+A+receptor+blockade+improves+regression+of+flow-induced+pulmonary+vasculopathy+in+piglets.">Endothelin A receptor blockade improves regression of flow-induced pulmonary vasculopathy in piglets.</a> J Thorac Cardiovasc Surg. 140, 677-683 (2010).</li><li>Spinale, F. G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chronic+supraventricular+tachycardia+causes+ventricular+dysfunction+and+subendocardial+injury+in+swine.">Chronic supraventricular tachycardia causes ventricular dysfunction and subendocardial injury in swine.</a> Am J Physiol. 259, H218-H229 (1990).</li><li>Yarbrough, W. M., Spinale, F. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Large+animal+models+of+congestive+heart+failure:+a+critical+step+in+translating+basic+observations+into+clinical+applications.">Large animal models of congestive heart failure: a critical step in translating basic observations into clinical applications.</a> J Nucl Cardiol. 10, 77-86 (2003).</li><li>Duncker, D. J., Stubenitsky, R., Verdouw, P. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Autonomic+control+of+vasomotion+in+the+porcine+coronary+circulation+during+treadmill+exercise:+evidence+for+feed-forward+beta-adrenergic+control.">Autonomic control of vasomotion in the porcine coronary circulation during treadmill exercise: evidence for feed-forward beta-adrenergic control.</a> Circ Res. 82, 1312-1322 (1998).</li><li>Stubenitsky, R., Verdouw, P. D., Duncker, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Autonomic+control+of+cardiovascular+performance+and+whole+body+O2+delivery+and+utilization+in+swine+during+treadmill+exercise.">Autonomic control of cardiovascular performance and whole body O2 delivery and utilization in swine during treadmill exercise.</a> Cardiovasc Res. 39, 459-474 (1998).</li><li>Zhou, Z., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Phosphodiesterase-5+activity+exerts+a+coronary+vasoconstrictor+influence+in+awake+swine+that+is+mediated+in+part+via+an+increase+in+endothelin+production.">Phosphodiesterase-5 activity exerts a coronary vasoconstrictor influence in awake swine that is mediated in part via an increase in endothelin production.</a> Am J Physiol Heart Circ Physiol. 306, H918-H927 (2014).</li><li>Gross, D. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Animal Models in Cardiovascular Research. , (2009).</li><li>Merkus, D., Duncker, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Perspectives:+Coronary+microvascular+dysfunction+in+post-infarct+remodelled+myocardium.">Perspectives: Coronary microvascular dysfunction in post-infarct remodelled myocardium.</a> Eur Heart J Suppl. 16, A74-A79 (2014).</li><li>de Beer, V. J., de Graaff, H. J., Hoekstra, M., Duncker, D. J., Merkus, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Integrated+control+of+pulmonary+vascular+tone+by+endothelin+and+angiotensin+II+in+exercising+swine+depends+on+gender.">Integrated control of pulmonary vascular tone by endothelin and angiotensin II in exercising swine depends on gender.</a> Am J Physiol Heart Circ Physiol. 298, H1976-H1985 (2010).</li><li>Lautt, W. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Resistance+or+conductance+for+expression+of+arterial+vascular+tone.">Resistance or conductance for expression of arterial vascular tone.</a> Microvasc Res. 37, 230-236 (1989).</li><li>Merkus, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Phosphodiesterase+5+inhibition-induced+coronary+vasodilation+is+reduced+after+myocardial+infarction.">Phosphodiesterase 5 inhibition-induced coronary vasodilation is reduced after myocardial infarction.</a> Am J Physiol Heart Circ Physiol. 304, H1370-H1381 (2013).</li><li>Heusch, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+paradox+of+alpha-adrenergic+coronary+vasoconstriction+revisited.">The paradox of alpha-adrenergic coronary vasoconstriction revisited.</a> J Mol Cell Card. 51, 16-23 (2011).</li><li>Merkus, D., Houweling, B., van den Meiracker, A. H., Boomsma, F., Duncker, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Contribution+of+endothelin+to+coronary+vasomotor+tone+is+abolished+after+myocardial+infarction.">Contribution of endothelin to coronary vasomotor tone is abolished after myocardial infarction.</a> Am J Physiol Heart Circ Physiol. 288, H871-H880 (2005).</li><li>Haitsma, D. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Minimal+impairment+of+myocardial+blood+flow+responses+to+exercise+in+the+remodeled+left+ventricle+early+after+myocardial+infarction,+despite+significant+hemodynamic+and+neurohumoral+alterations.">Minimal impairment of myocardial blood flow responses to exercise in the remodeled left ventricle early after myocardial infarction, despite significant hemodynamic and neurohumoral alterations.</a> Cardiovasc Res. 52, 417-428 (2001).</li><li>Bender, S. B., van Houwelingen, M. J., Merkus, D., Duncker, D. J., Laughlin, M. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantitative+analysis+of+exercise-induced+enhancement+of+early-+and+late-systolic+retrograde+coronary+blood+flow.">Quantitative analysis of exercise-induced enhancement of early- and late-systolic retrograde coronary blood flow.</a> J Appl Physiol. 108 (3), 507-514 (2010).</li></ol>

Die Autoren haben nichts zu offenbaren.

Die vorliegende Studie beschreibt die Operation für chronische Instrumentierung von Schweinen sowie das Protokoll über eine motorgetriebene Laufband die instrumentierte Schweine für die Ausübung während Hämodynamik und Entnahme von Blutproben zur Messung der Sauerstoffgehalt im arteriellen, venösen gemischt und koronare venöse Blut zu messen. Kritische Schritte in dem Protokoll Es gibt mehrere wichtige Schritte im Protokoll, das bereits bei der Intubation Verfahren zu starten....

Angemessene Herz-Lungen-Funktion ist wichtig, um den Körper mit Sauerstoff und Nährstoffen zu versorgen, insbesondere während Bedingungen eines erhöhten Stoffwechselbedarf wie während des Trainings ein. Die Herz-Lungen-Reaktion auf Bewegung wird durch eine Reihe von Anpassungen der Herzfunktion gekennzeichnet, dh., Einen Anstieg der Herzfrequenz, Kontraktilität und Schlagvolumen und mikrovaskulären Funktion, dh, Vasodilatation in den Gefäßbetten Zuführen Muskeln sowie in den Lungen Ausübung Gefäße und Gefäßverengung in den Gefäßbetten, die Magen-Darm-System sowie die inaktiven Muskeln liefert ein. Beeinträchtigte körperliche Belastbarkeit ist ein frühes Merkmal der Herz-Lungen-Dysfunktion und Spiroergometrie wird als eine effektive Methode verwendet, um zwischen Herzfunktionsstörungen, Gefäßstörungen und / oder Lungenfunktionsstörungen bei Patienten mit eingeschränkter körperlichen Leistungsfähigkeit 2 abzugrenzen. Frühe kardiopulmonale Funktionsstörung ist difficult zu diagnostizieren, insbesondere in Tiermodellen, wie Herz-Lungen-Funktion oft invasiv gemessen wird, Anästhesie erfordert, mit vielen Anästhetika kardiodepressiven Eigenschaften 3 besitzen. Chronische Instrumentierung ermöglicht die Messung der Herz-Lungen-Funktion in den Wachzustand, und wenn die Tiere vollständig angepasst werden an die Laborbedingungen Messungen können unter ruhigen Ruhebedingungen ohne die Auswirkungen der Anästhesie und akuten chirurgischen Trauma erhalten werden. Darüber hinaus, wenn die Tiere angemessen ausgebildet werden, Messungen auch während abgestuften Laufband 4,5 erhalten werden. Genauer gesagt, linke und rechte Herzfunktion bewertet und zu Myokardperfusion Beziehung gesetzt werden kann, während Tonusregulation vasomotorischer in den koronaren, systemische und pulmonale Mikrozirkulation festgestellt werden kann. Die Verwendung von flüssigkeitsgefüllten Katheter ermöglicht die Messung von Druck sowie Entnahme von Blutproben ohne Anzeige zur Einführungsätzliche Belastung für die Tiere. Ein weiterer Vorteil der chronisch instrumentierten Tiere zu studieren ist, dass Spiroergometrie wiederholt werden, um die Verwendung eines Tieres als seine eigene Kontrolle ermöglicht, entweder während der Krankheitsentwicklung oder bei der Langzeitbehandlung, wodurch die statistische Aussagekraft zu erhöhen und damit die Zahl der Tiere, für eine Studie erforderlich Begrenzung . Cardiopulmonary Anatomie von Schweinen sehr ähnlich dem des Menschen, und es ist möglich, verschiedene Formen von Herz-Lungen-Krankheiten, wie Diabetes 6, Myokardinfarkt 7, pulmonale Hypertonie und 8,9 Pacing-induzierte Herzinsuffizienz 10,11 zu induzieren. Darüber hinaus erlaubt die Größe der Schweine chronischen Instrumentierung, und wiederholte Blutentnahme in ausreichender Menge zur Analyse nicht nur Blutgase, aber auch neurohumoralen Messungen und / oder zur Suche nach Biomarkern der Krankheit durchzuführen. Dieses Protokoll beschreibt die Operation zu chronischen verwendetly Instrument Schwein auf einem motorgetriebenen Laufband in die Schweine sowie das Protokoll für die Ausübung.

<table><tbody><tr><td>3-way stopcocks</td><td>B. Braun</td><td>16496</td><td></td></tr><tr><td>Perfusor lines PVC (DEHP-free) 150 cm/2.6 ml&amp;nbsp;</td><td>B. Braun</td><td>8722960</td><td>Used for fluid filled catheters</td></tr><tr><td>&amp;ldquo;python &amp;ldquo; silicontubing</td><td>Rubber BV</td><td>1757 ID 1 mm, OD 2 mm</td><td>Used for fluid filled catheters</td></tr><tr><td>Sodium Chloride 0.9%</td><td>Baxter</td><td>TKF7124</td><td></td></tr><tr><td>Glucose 10%</td><td>Baxter</td><td>WE0163</td><td></td></tr><tr><td>Suction device</td><td></td><td></td><td></td></tr><tr><td>Slim-Line electrosurgical pencil with 2 buttons</td><td>ERBE ELEKTROMEDIZIN GMBH</td><td>20190-066</td><td></td></tr><tr><td>Servo Ventilator&amp;nbsp;SV900C&amp;nbsp;</td><td>Siemens-Elema AB&amp;nbsp;</td><td></td><td></td></tr><tr><td>Laryngoscoop</td><td>Vererinary Technics Int.</td><td>11.02.47</td><td></td></tr><tr><td>Sterile surgical gloves</td><td></td><td></td><td></td></tr><tr><td>tie-on surgical mask</td><td>3M</td><td>1818FS</td><td></td></tr><tr><td>surgical hat</td><td>Klinidrape</td><td>621301</td><td></td></tr><tr><td>Procedure pack</td><td>Molnlycke Health Care</td><td>97027809</td><td>Surgical drape, gauze pads, syringes, beaker etc</td></tr><tr><td>Droptears</td><td>Alcon</td><td>288-28282-01</td><td></td></tr><tr><td>Betadine scrub 75 mg/ml Povidone-iodine</td><td>Meda Pharma BV</td><td>RVG08939</td><td></td></tr><tr><td>Betadine solution 100 mg/ml Povidone-iodine</td><td>Meda Pharma BV</td><td>RVG01331</td><td></td></tr><tr><td>Cuffed Endotracheal tube</td><td>Emdamed</td><td></td><td>size depends on animal size</td></tr><tr><td>Breathing filter Hyrdo therm 3HME</td><td>Intersurgical</td><td>1560000</td><td></td></tr><tr><td>Laryngoscope Handle+ Miller blade size 4</td><td>Kawe Germany</td><td></td><td></td></tr><tr><td>Manual resuscitator- Combibag</td><td>Weinmann</td><td>6515-12-313-5596</td><td></td></tr><tr><td>Perivascular flow probe 3PS</td><td>Transonic</td><td></td><td>For coronary artery; Size 2.5 - 4 mm depending on animal size</td></tr><tr><td>Confidence flow probe</td><td>Transonic</td><td></td><td>For aorta/pulmonary artery, 16 - 20 mm; size depends on animal size</td></tr><tr><td>Venflon-Venisystem 20 G x 32 mm</td><td>BD</td><td>393224</td><td>For coronary venous catheter</td></tr><tr><td>Blunt Needle 18 G</td><td></td><td></td><td>For coronary venous catheter</td></tr><tr><td>Tygon Tubing</td><td>Rubber BV</td><td>2802 ID 0.8 mm (1/32&amp;rsquo;&amp;rsquo;), OD 2.4 mm (3/32&amp;rsquo;&amp;rsquo;)</td><td>For coronary venous catheter</td></tr><tr><td>Suction Handle 17 cm 6 6/8 &quot; Coupland 18/8 martinit with tube connector</td><td>KLS Martin Group</td><td>18-575-24</td><td></td></tr><tr><td>Scalple blade&amp;nbsp;</td><td></td><td></td><td></td></tr><tr><td>Scalpel Handle 13.5 cm 5 3/8 &quot; Stainless Steel solid</td><td>KLS Martin Group</td><td>10-100-04</td><td></td></tr><tr><td>Vascular Forceps 20.2 cm 8 &quot; De Bakey Stainless Stee</td><td>KLS Martin Group</td><td>24-388-20</td><td>&amp;plusmn; 14 cm</td></tr><tr><td>Dressing Forceps 17 cm 6 6/8 &quot; Cushing Stainless Steel</td><td>KLS Martin Group</td><td>12-189-17</td><td>&amp;plusmn; 18 cm</td></tr><tr><td>halsted-musquito straight 12.5 cm - 5&quot;</td><td>Rudolf Medical</td><td>RU-3100-13</td><td>&amp;plusmn; 12 cm</td></tr><tr><td>halsted-musquito curved 12.5 cm - 5&quot;</td><td>Rudolf Medical</td><td>RU-3101-12</td><td>&amp;plusmn; 12 cm</td></tr><tr><td>Dissecting and Ligature Forceps 13 cm 5 1/8 &quot; Gemini Stainless Steel</td><td>KLS Martin Group</td><td>13-451-13</td><td>&amp;plusmn; 12 cm</td></tr><tr><td>Dissecting and Ligature Forceps 18.5 cm 7 2/8 &quot; Schnidt Stainless Steel</td><td>KLS Martin Group</td><td>13-363-18</td><td></td></tr><tr><td>Rib Retractor Finochietto, Baby Aluminium -</td><td>KLS Martin Group</td><td>24-162-01</td><td></td></tr><tr><td>suture forceps Mayo-Hegar 3 mm 18 cm - 7&quot;</td><td>Rudolf Medical</td><td>RU-6050-18</td><td></td></tr><tr><td>Metchenbaum blunt curved 14.5 cm - 5(3/4)&quot;</td><td>Rudolf Medical</td><td>RU-1311-14M</td><td></td></tr><tr><td>Retrector farabeuf 12 cm - 4 (3/4)&quot;</td><td>Rudolf Medical</td><td>RU-4497-12</td><td></td></tr><tr><td>Towel forceps schr&amp;auml;del curved 9cm - 3,5&quot;</td><td>Rudolf Medical</td><td>RU-3550-09</td><td></td></tr><tr><td>surgical scissors blunt 13 cm - 5&quot;</td><td>Rudolf Medical</td><td>RU-1001-13</td><td></td></tr><tr><td>Gauzes Cutisoft 10 x 10 cm 4-ply</td><td>BSN Medical</td><td>45846-00</td><td></td></tr><tr><td>Gauzes Cutisoft 5 x 5 cm 4-ply</td><td>BSN Medical</td><td>45844-00</td><td></td></tr><tr><td>Flowmeter -CM2 / SF2 - 2gas (O2 and Air)</td><td>UNO BV</td><td>180000008</td><td></td></tr><tr><td>Tec 7 Vaporizer</td><td>Datex-Ohmeda</td><td></td><td></td></tr><tr><td>Acederm wound spay</td><td>Ecuphar NV</td><td></td><td></td></tr><tr><td>Vaseline Album</td><td>Bufa</td><td>165313</td><td></td></tr><tr><td>silkam 3-0 Natural silk, non-absorbable</td><td>B. Braun</td><td>F 1134043</td><td>sutures for placement of catheters</td></tr><tr><td>silkam 2-0 Natural silk, non-absorbable</td><td>B. Braun</td><td>F 1134051</td><td>sutures for muscular approximation</td></tr><tr><td>dagrofil 3-0 Polyester, non-absorbable</td><td>B. Braun</td><td>C 0842478</td><td>sutures for fluid fille catheters after tunneling</td></tr><tr><td>Vicryl rapide 3-0, 1 x 45 cm FS2, V2930G</td><td>Daxtrio medische producten</td><td>15560</td><td>sutures for electrical catheters after tunneling</td></tr><tr><td>Vitafil 6 USP</td><td>SMI</td><td>6080</td><td>Ties</td></tr><tr><td>Syringes</td><td></td><td></td><td>10 ml and 2.5 ml</td></tr><tr><td>Heparin LEO (heparin sodium)&amp;nbsp;</td><td>LEO Pharma A/S</td><td></td><td></td></tr><tr><td>Zoletil</td><td>Virbac</td><td></td><td>tiletamine / zolazepam</td></tr><tr><td>Sedazine</td><td>AST farma</td><td>108855</td><td>xylazine</td></tr><tr><td>Temgesic</td><td>RB Pharmaceuticals</td><td>5429</td><td>buprenorphine</td></tr><tr><td>Tensogrip</td><td>BSN Medical</td><td>71522-00</td><td>elastic vest</td></tr></tbody></table>

surgical placement of catheters for long-term cardiovascular exercise testing in swine

Dieses Protokoll beschreibt die chirurgische Prozedur chronisch Instrument Schweine und Schweine dem Verfahren auf einer motorgetriebenen Laufband auszuüben. Frühe kardiopulmonaler Dysfunktion ist schwer zu diagnostizieren, insbesondere in Tiermodellen, wie Herz-Lungen-Funktion oft invasiv gemessen wird, erfordert Anästhesie. Wie viele Anästhetika kardiodepressiven, subtile Veränderungen in der Herz-Kreislauf-Funktion sind, können maskiert werden. Im Gegensatz dazu ermöglicht chronischen Instrumentierung zur Messung der Herz-Lungen-Funktion in den Wachzustand, so dass Messungen unter ruhigen Ruhebedingungen erhalten werden, ohne die Auswirkungen der Anästhesie und akuten chirurgischen Trauma. Darüber hinaus, wenn die Tiere entsprechend geschult sind, Messungen auch während abgestuften Laufband erhalten werden. Strömungssonden sind rund um die Aorta oder Lungenarterie zur Messung des Herzzeitvolumens und um den linken vorderen absteigenden Koronararterie zur Messung von coron platziertary Blutung. Flüssigkeitsgefüllte Katheter in die Aorta, Lungenarterie implantiert, linker Vorhof, linker Herzkammer und der rechten Herzkammer zur Druckmessung und Blutabnahme. Zusätzlich wird eine 20 G-Katheter in der vorderen interventrikulären Vene positioniert koronare venöse Blutentnahme ermöglichen. Nach einer Woche der Erholung, sind Schweine werden auf einer motorgetriebenen Laufband gelegt, die Katheter zur Druck- und Durchflussmesser verbunden sind, und Schweinen zu einer progressiven fünfstufigen Bewegung Protokoll unterzogen, wobei jede Stufe einer Dauer von 3 min. Hämodynamischen Signale werden kontinuierlich aufgezeichnet und Blutproben werden während der letzten 30 Sekunden von jeder Übung Bühne gemacht. Der große Vorteil von chronisch instrumentierten Tiere zu studieren ist, dass es serielle Beurteilung der Herz-Lungen-Funktion, nicht nur in Ruhe, sondern auch bei körperlicher Belastung wie Bewegung ermöglicht. Darüber hinaus kann Herz-Lungen-Funktion mehrmals während der Krankheitsentwicklung eine beurteilt werdennd während Langzeitbehandlung, wodurch sich die statistische Aussagekraft und damit die Begrenzung der Anzahl der Tiere, für eine Studie erforderlich.

Übung bis zu 5 km / h führte zu einer Verdoppelung der Herzleistung von 4,3 ± 0,3 auf 8,5 ± 0,7 L / min, die hauptsächlich durch eine Erhöhung der Herzfrequenz von 137 ± 7-256 ± 8 Schlägen pro min in Kombination mit einem geführt wurde kleine Erhöhung des Schlagvolumens von 32 ± 2 bis 36 ± 3 ml (Abbildung 3). Die Erhöhung der Schlagvolumen wurde durch eine Zunahme der linksventrikulären Kontraktilität erleichtert, da durch eine Erhöhung des Maximums der ...

Watch this Scientific Journal Video about Surgical Placement of Catheters for Long-term Cardiovascular Exercise Testing in Swine at JoVE.com

Surgical Placement of Catheters for Long-term Cardiovascular Exercise Testing in Swine

Here we present a protocol to assess cardiopulmonary function in awake swine, at rest and during graded treadmill exercise. Chronic instrumentation allows for repeated hemodynamic measurements uninfluenced by cardiodepressive anesthetic agents.

Chirurgische Platzierung von Kathetern für die langfristige Herz-Kreislauf und Sportmedizin in Swine

This protocol describes the surgical procedure to chronically instrument swine and the procedure to exercise swine on a motor-driven treadmill. Early ...

surgical-placement-catheters-for-long-term-cardiovascular-exercise

Research

JoVE Journal

Medicine

13.3K Aufrufe.  Erasmus MC. Here we present a protocol to assess cardiopulmonary function in awake swine, at rest and during graded treadmill exercise. Chronic instrumentation allows for repeated hemodynamic measurements uninfluenced by cardiodepressive anesthetic agents.

Serie: Surgical Placement of Catheters for Long-term Cardiovascular Exercise Testing in Swine

Minimal Invasive Surgical Procedure of Inducing Myocardial Infarction in Mice

Myocardial infarction still remains the main cause of death in western countries, despite considerable progress in the stent development area in the last decades. For clarification of the underlying mechanisms and the development of new therapeutic strategies, the availability of valid animal models are mandatory. Since we need new insights into pathomechanisms of cardiovascular diseases under in vivo conditions to combat myocardial infarction, the validity of the animal model is a crucial aspect. However, protection of animals are highly relevant in this context. Therefore, we establish a minimally invasive and simple model of myocardial infarction in mice, which assures a high reproducibility and survival rate of animals. Thus, this models fulfils the requirements of the 3R principle (Replacement, Refinement and Reduction) for animal experiments and assure the scientific information needed for further developing of therapeutical strategies for cardiovascular diseases.

A highly reproducible model for myocardial infarction in mice with minimal invasive manipulations is described. The model can be easily performed, resulting in a high reproducibility and survival rate. Thus, the described model will reduce the number of required animals as requested by the 3R principle (Replacement, Refinement and Reduction).

Minimal-invasive chirurgische Verfahren zur Induktion Myokardinfarkt in Mice

Myocardial infarction still remains the main cause of death in western countries, despite considerable progress in the stent development area in the last ...

Forschung

Medizin

Testing the Efficacy of Pharmacological Agents in a Pericardial Target Delivery Model in the Swine

To date, many pharmacological agents used to treat or prevent arrhythmias in open-heart cases create undesired systemic side effects. For example, antiarrhythmic drugs administered intravenously can produce drops in systemic pressure in the already compromised cardiac patient. While performing open-heart procedures, surgeons will often either create a small port or form a pericardial cradle to create suitable fields for operation. This access yields opportunities for target pharmacological delivery (antiarrhythmic or ischemic preconditioning agents) directly to the myocardial tissue without undesired side effects.
We have developed a swine model for testing pharmacological agents for target delivery within the pericardial fluid. While fully anesthetized, each animal was instrumented with a Swan-Ganz catheter as well as left and right ventricle pressure catheters, and pacing leads were placed in the right atrial appendage and the right ventricle. A medial sternotomy was then performed and a pericardial access cradle was created; a plunge pacing lead was placed in the left atrial appendage and a bipolar pacing lead was placed in the left ventricle. Utilizing a programmer and a cardiac mapping system, the refractory period of the atrioventricular node (AVN), atria and ventricles was determined. In addition, atrial fibrillation (AF) induction was produced utilizing a Grass stimulator and time in AF was observed. These measurements were performed prior to treatment, as well as 30 min&#160;and 60 min&#160;after pericardial treatment. Additional time points were added for selected studies. The heart was then cardiopleged and reanimated in a four chamber working mode. Pressure measurements and function were recorded for 1 hr after reanimation. This treatment strategy model allowed us to observe the effects of pharmacological agents that may decrease the incidence of cardiac arrhythmias and/or ischemic damage, during and after open-heart surgery.

We have developed a swine model for the target delivery of pharmacological agents within the pericardial space/fluid. Using this approach, the relative benefits of administered agents on induced atrial fibrillation, relative refractory periods and/or ischemic protection can be investigated.

Prüfung der Wirksamkeit von pharmakologischen Wirkstoffen in einem Pericardial Ziel Delivery Model in der Schweine

To date, many pharmacological agents used to treat or prevent arrhythmias in open-heart cases create undesired systemic side effects. For example, ...

Long-term Blood Pressure Measurement in Freely Moving Mice Using Telemetry

During the development of new vasoactive agents, arterial blood pressure monitoring is crucial for evaluating the efficacy of the new proposed drugs. Indeed, research focusing on the discovery of new potential therapeutic targets using genetically altered mice requires a reliable, long-term assessment of the systemic arterial pressure variation. Currently, the gold standard for obtaining long-term measurements of blood pressure in ambulatory mice uses implantable radio-transmitters, which require&#160;artery cannulation. This technique eliminates the need for tethering, restraining, or anesthetizing the animals which introduce stress and artifacts during data sampling. However, arterial blood pressure monitoring in mice via catheterization can be rather challenging due to the small size of the arteries. Here we present a step-by-step guide to illustrate the crucial key passages for a successful subcutaneous implantation of radio-transmitters and carotid artery cannulation in mice. We also include examples of long-term blood pressure activity taken from freely moving mice after a period of post-surgery recovery. Following this procedure will allow reliable direct blood pressure recordings from multiple animals simultaneously.

The goal of this protocol is to assess systemic blood pressure in conscious freely moving mice using implantable radio-telemetry devices.

Langzeit-Blutdruckmessung in sich frei bewegenden Mäuse Telemetrie

During the development of new vasoactive agents, arterial blood pressure monitoring is crucial for evaluating the efficacy of the new proposed drugs. ...

Brachial Artery Catheterization in Swine

The video describes in detail the catheterization of the distal brachial artery in swine. This technique enables researchers to measure arterial blood pressure continuously and collect arterial blood samples to assess arterial blood gas measurements. Arterial blood pressures and arterial blood gases are important physiological parameters to monitor during experimental procedures. In swine, four common methods of arterial catheterization have been described, including catheterization of the carotid, femoral, auricular, and medial saphenous arteries. Each of these techniques have advantages, such as ease of access for the auricular artery, and disadvantages that include deep tissue dissection for carotid artery catheterization. The described alternative method of arterial catheterization in swine, the catheterization of the distal aspect of the brachial artery, is a rapid procedure that requires relatively minimal tissue dissection and provides information that is in line with data collected from other arterial catheterization sites. The procedure uses a medial approach along an oblique plane of the lower brachium, positioned between the olecranon and the flexor aspect of the elbow joint, and this approach allows researchers the major advantage of unimpeded freedom for procedures that involve the caudoventral, caudodorsal back, or hind limbs of the pig. Due to the location of the upper forelimb of the catheterized vessel and potential challenges of effective homeostasis following catheter removal from the artery, this technique may be limited to non-recovery procedures.

The video describes in detail the catheterization of the distal brachial artery in swine. This procedure accurately measures arterial blood pressure and is a simple and fast method to collect samples for arterial blood gas measurements.

Brachial Arterie Katheterisierung bei Schweinen

The video describes in detail the catheterization of the distal brachial artery in swine. This technique enables researchers to measure arterial blood ...

Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease

Minimally invasive methods for creating models of focal coronary narrowing in large animals are challenging. Rapid prototyping using three-dimensionally (3D) printed coronary implants can be employed to percutaneously create a focal coronary stenosis. However, reliable delivery of the implants can be difficult without the use of ancillary equipment. We describe the use of a mother-and-child coronary guide catheter for stabilization of the implant and for effective delivery of the 3D printed implant to any desired location along the length of the coronary vessel. The focal coronary narrowing was confirmed under coronary cineangiography and the functional significance of the coronary stenosis was assessed using gadolinium-enhanced first-pass cardiac perfusion MRI. We showed that reliable delivery of 3D printed coronary implants in swine models (n = 11) of ischemic heart disease can be achieved through repurposing mother-and-child coronary guide catheters. Our technique simplifies the percutaneous delivery of coronary implants to create closed-chest swine models of focal coronary artery stenosis and can be performed expeditiously, with a low procedural failure rate.

We describe a novel, cost-effective, and efficient technique for percutaneous delivery of three-dimensionally printed coronary implants to create closed-chest swine models of ischemic heart disease. The implants were fixed in place using a mother-and-child extension catheter with high success rate.

Neuartiger perkutaner Ansatz für den Einsatz von 3D gedruckten koronaren Stenose-Implantaten in Schweinemodellen ischämischer Herzkrankheit

Minimally invasive methods for creating models of focal coronary narrowing in large animals are challenging. Rapid prototyping using three-dimensionally ...

Measuring Cardiac Output in a Swine Model

Swine are frequently used in medical research given their similar cardiac physiology to that of humans. Measuring cardiac parameters such as stroke volume and cardiac output are essential in this type of research. Contrast ventriculography, thermodilution, and pressure-volume loop (PV-loop) catheters can be used to accurately obtain cardiac performance data depending on which resources and expertise are available. For this study,five Yorkshire swine were anesthetized and intubated. Central venous and arterial access was obtained to place the necessary measurement instruments.A temperature probe was placed in the aortic root. A cold saline bolus was delivered to the right atrium and temperature deflection curve was recorded. Integration of the area under the curve allowed for the calculation of the current cardiac output.A pigtail catheter was percutaneously placed in the left ventricle and 30 mL of iodinated contrast was power injected over 2 seconds. Digital subtraction angiography images were uploaded to volumetric analysis software to calculate the stroke volume and cardiac output. A pressure volume-loop catheter was placed into the left ventricle (LV) and provided continuous pressure and volume data of the LV, which allowed the calculation of both stroke volume and cardiac output.All three methods demonstrated good correlation with each other. The PV-loop catheter and thermodilution exhibited the best correlation with a 3% error and a Pearson coefficient of 0.99, with 95% CI=0.97 to 1.1, (p=0.002). The PV-loop catheter against ventriculography also showed good correlation with a 6% error and a Pearson coefficient of 0.95, 95% CI=0.96 to 1.1 (p=0.01). Finally, thermodilution against ventriculography had a 2% error with r=0.95, 95% CI=0.93 to 1.11, (p=0.01). In conclusion, we state that the PV-loop catheter, contrast ventriculography, and thermodilution each offer certain advantages depending on the researcher's requirements. Each method is reliable and accurate for measuring various cardiac parameters in swine such as the stroke volume and cardiac output.

Thermodilution, pressure-volume loop catheters, and contrast ventriculography are reliable and accurate methods for determining cardiac physiology such as stroke volume and cardiac output in a laboratory setting in swine.

Swine are frequently used in medical research given their similar cardiac physiology to that of humans. Measuring cardiac parameters such as stroke volume ...

Closed Chest Biventricular Pressure-Volume Loop Recordings with Admittance Catheters in a Porcine Model

Pressure-volume (PV) loop recording enables the state-of-the-art investigation of load-independent variables of ventricular performance. Uni-ventricular evaluation is often performed in preclinical research. However, the right and left ventricles exert functional interdependence due to their parallel and serial connections, encouraging simultaneous evaluation of both ventricles. Furthermore, various pharmacological interventions may affect the ventricles and their preloads and afterloads differently. 
We describe our closed chest approach to admittance-based bi-ventricular PV loop recordings in a porcine model of acute right ventricular (RV) overload. We utilize minimally invasive techniques with all vascular accesses guided by ultrasound. PV catheters are positioned, under fluoroscopic guidance, to avoid thoracotomy in animals, as the closed chest approach maintains the relevant cardiopulmonary physiology. The admittance technology provides real-time PV loop recordings without the need for post-hoc processing. Furthermore, we explain some essential troubleshooting steps during critical timepoints of the presented procedure. 
The presented protocol is a reproducible and physiologically relevant approach to obtain a bi-ventricular cardiac PV loop recording in a large animal model. This can be applied to a large variety of cardiovascular animal research.

Here we present a closed chest approach to admittance-based bi-ventricular pressure-volume loop recordings in pigs with acute right ventricular dysfunction.

Biventrikuläre Druck-Volumen-Loop-Aufnahmen mit Einlasskathetern im Schweinemodell

Pressure-volume (PV) loop recording enables the state-of-the-art investigation of load-independent variables of ventricular performance. Uni-ventricular ...

Intubation, Central Venous Catheter, and Arterial Line Placement in Swine for Translational Research in Abdominal Transplantation Surgery

Translational surgical research models in swine are crucial for developing safe preclinical protocols. However, the success of the experimental surgeries does not solely rely on the research team's surgical skills; perioperative care and management procedures, like intubation, central venous line, and arterial line placement, are necessary and of the utmost importance for favorable experiment results. As it is uncommon for research teams to have anesthesiologists or any other staff other than the surgical team, the surgical team involved in translational research must acquire and/or develop the skills to perform the perioperative care. The purpose of this paper is to show the techniques of intubation, central venous catheter, and arterial line placement used and perfected at the Toronto Organ Preservation Laboratory over the last 10 years, to be used as a reference for future researchers joining either this team or any other lab performing translational research protocols in swine and/or abdominal transplantation.

To obtain the best possible results, surgeons performing translational research experiments should be proficient at intubation and vascular line placement. This paper describes the techniques used by the Toronto Organ Preservation Laboratory to perform these procedures.

Translational surgical research models in swine are crucial for developing safe preclinical protocols. However, the success of the experimental surgeries ...

Hickman-Katheter für den langfristigen Gefäßzugang bei Schweinen

Hickman Catheter Use for Long-Term Vascular Access in a Preclinical Swine Model

Central venous catheters (CVCs) are invaluable devices in large animal research as they facilitate a wide range of medical applications, including blood monitoring and reliable intravenous fluid and drug administration. Specifically, the tunneled multi-lumen Hickman catheter (HC) is commonly used in swine models due to its lower extrication and complication rates. Despite fewer complications relative to other CVCs, HC-related morbidity presents a significant challenge, as it can significantly delay or otherwise negatively impact ongoing studies. The proper insertion and maintenance of HCs is paramount in preventing these complications, but there is no consensus on best practices. The purpose of this protocol is to comprehensively describe an approach for the insertion and maintenance of a tunneled HC in swine that mitigates HC-related complications and morbidity. The use of these techniques in &gt;100 swine has resulted in complication-free patent lines up to 8 months and no catheter-related mortality or infection of the ventral surgical site. This protocol offers a method to optimize the lifespan of the HC and guidance for approaching issues during use.

Autor im Rampenlicht: Verwendung von Hickman-Kathetern für den langfristigen Gefäßzugang in einem präklinischen Schweinemodell  

A reliable and reproducible approach for the insertion and maintenance of a tunneled Hickman catheter for long-term vascular access in swine is described. Placement of a central venous catheter allows for convenient daily sampling of whole blood from awake animals and intravenous administration of medication and fluids.

Verwendung des Hickman-Katheters für den langfristigen Gefäßzugang in einem präklinischen Schweinemodell

Central venous catheters (CVCs) are invaluable devices in large animal research as they facilitate a wide range of medical applications, including blood ...

Chirurgische Platzierung von Kathetern für die langfristige Herz-Kreislauf und Sportmedizin in Swine

Zusammenfassung

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Brachial Arterie Katheterisierung bei Schweinen

Neuartiger perkutaner Ansatz für den Einsatz von 3D gedruckten koronaren Stenose-Implantaten in Schweinemodellen ischämischer Herzkrankheit

Measuring Cardiac Output in a Swine Model

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Intubation, Central Venous Catheter, and Arterial Line Placement in Swine for Translational Research in Abdominal Transplantation Surgery

Verwendung des Hickman-Katheters für den langfristigen Gefäßzugang in einem präklinischen Schweinemodell

Verwendung des Hickman-Katheters für den langfristigen Gefäßzugang in einem präklinischen Schweinemodell