PMID- 3917517 OWN - NLM STAT- MEDLINE DCOM- 19850211 LR - 20161123 IS - 0022-5223 (Print) IS - 0022-5223 (Linking) VI - 89 IP - 1 DP - 1985 Jan TI - Long-term hemodynamics following combined heart and lung transplantation in primates. PG - 55-62 AB - To assess the long-term hemodynamic consequences of combined heart and lung transplantation, we investigated six rhesus monkeys 2.6 to 4.6 years (mean 4.0) after operation. Total follow-up was 24.0 primate-years. Autotransplantation had been carried out in four animals and allotransplantation in two, and the hemodynamic results were compared with those in three normal monkeys of similar size. Each animal underwent simultaneous right and left heart catheterization and pulmonary arteriography. Hemodynamic measurements were made at three levels of inspired oxygen. Arterial oxygen tension was within normal limits in all animals, and pulmonary artery pressure and pulmonary vascular resistance index did not change significantly with changes in the levels of inspired oxygen. Indices of left ventricular systolic function were normal in all animals. Values for pulmonary artery pressure and pulmonary vascular resistance index were similar in the autograft and normal groups: in the allograft group, the average pressure was 30/17 mm Hg (mean 24) and the index was 5.6 units . m2--both levels significantly higher than normal (pressure was 16/10 mm Hg, mean 13, [p less than 0.001] and index was 2.5 units . m2 [p less than 0.02]). Pulmonary arteriography in the allograft group with the highest pulmonary vascular resistance index (6.1 units . m2) was compatible with pulmonary vascular disease. Pulmonary arteriograms in the remaining eight monkeys were normal. Prolonged survival following combined heart and lung transplantation is possible in primates. Autotransplantation (and probable persisting denervation of the cardiopulmonary axis) does not necessarily result in abnormal long-term hemodynamics. The elevation in pulmonary artery pressure and pulmonary vascular resistance index in the allograft group may be related to previous episodes of pulmonary rejection, infection, or drug reaction. FAU - Dawkins, K D AU - Dawkins KD FAU - Haverich, A AU - Haverich A FAU - Derby, G C AU - Derby GC FAU - Scott, W C AU - Scott WC FAU - Reitz, B A AU - Reitz BA FAU - Stinson, E B AU - Stinson EB FAU - Jamieson, S W AU - Jamieson SW FAU - Shumway, N E AU - Shumway NE LA - eng GR - HL 08696-21/HL/NHLBI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Thorac Cardiovasc Surg JT - The Journal of thoracic and cardiovascular surgery JID - 0376343 SB - IM MH - Animals MH - Blood Gas Analysis MH - Denervation MH - Heart/physiopathology MH - *Heart Transplantation MH - *Heart-Lung Transplantation MH - *Hemodynamics MH - Lung/physiopathology MH - *Lung Transplantation MH - Macaca mulatta MH - Pulmonary Artery/diagnostic imaging MH - Pulmonary Gas Exchange MH - Radiography MH - Time Factors MH - Transplantation, Autologous MH - Transplantation, Homologous EDAT- 1985/01/01 00:00 MHDA- 1985/01/01 00:01 CRDT- 1985/01/01 00:00 PHST- 1985/01/01 00:00 [pubmed] PHST- 1985/01/01 00:01 [medline] PHST- 1985/01/01 00:00 [entrez] PST - ppublish SO - J Thorac Cardiovasc Surg. 1985 Jan;89(1):55-62.