Injury in organs after cardiopulmonary bypass: a comparative experimental morphological study between a centrifugal and a new pulsatile pump.
The aim of this investigation was to assess organ injury provoked by a new pulsatile pump for cardiopulmonary bypass (CPB) with respect to a conventional centrifugal pump. Eight pigs in the pulsatile group (PG) and five in the centrifugal group (CG) underwent a partial CPB lasting 180 min. The animals were sacrificed 180 min after CPB was suspended, and a morphological study of fragments of ventricular wall, liver, lung, and kidney was performed. In CG, centrilobular hepatic necrosis was observed accompanied by sinusoidal dilatation and congestion, multiple focuses of myocardial ischemia, and minor to moderate pulmonary interstitial edema. In PG, diffuse centrilobular sinusoidal congestion in the liver, congestion and capillary dilatation of low intensity in the ventricular wall, and nonsignificant pulmonary interstitial septal edema was observed. In the kidney, both groups showed degenerative changes of the tubular cells and nonsignificant tubular dilatation. These results suggest a better peripheral circulation in the pulsatile group.
Cardiovascular Surgery Department, Clínica Universitaria, University of Navarra, Pamplona, Spain.
Jesús
J
Herreros
Enrique J
EJ
Berjano
Josu
J
Sola
Wouter
W
Vlaanderen
Laura
L
Sales-Nebot
Pedro
P
Más
Clemente
C
Padrós
Pedro
P
Díaz
Gregorio
G
Rábago
Salvador
S
Mercé
D000818:Animals; D002315:Cardiopulmonary Bypass / Q000009:adverse effects / Q000295:instrumentation; D002498:Centrifugation / Q000295:instrumentation; D006331:Heart Diseases / Q000209:etiology / Q000473:pathology*; D007674:Kidney Diseases / Q000209:etiology / Q000473:pathology*; D008107:Liver Diseases / Q000209:etiology / Q000473:pathology*; D008171:Lung Diseases / Q000209:etiology / Q000473:pathology*; D011673:Pulsatile Flow / Q000502:physiology; D013552:Swine