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The Annals of Thoracic Surgery, Vol 43, 92-97, Copyright © 1987 by The Society of Thoracic Surgeons
N Shapira, GM Lemole, PM Spagna, FJ Bonner, J Fernandez and D Morse
The efficacy of two routes of cardioplegia infusion was examined by
assessing the hypothermia induced in patients with critically obstructed or
occluded major coronary arteries. The antegrade (through the aorta) and the
retrograde (through the coronary sinus) methods of cardioplegia infusion
were compared using myocardial thermograms. Patients (N = 8) were matched
according to angiographic similarities of their coronary artery disease.
Adequate myocardial cooling distal to a critical obstruction could
frequently not be obtained with antegrade infusion of cardioplegic
solution. With retrograde infusion, the desired uniform cooling of the
myocardium, as determined by thermographic analysis of the surface
temperatures of the heart, was obtained. We conclude that retrograde
infusion of cardioplegic solution induces more effective and homogeneous
hypothermia in patients with critically obstructive multivessel coronary
disease, and may provide improved myocardial protection.
ARTICLES
Antegrade and retrograde infusion of cardioplegia: assessment by thermovision
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