[Influence of atrial and ventricular temperature during cardiac arrest for open heart surgery on postoperative arrhythmias].
Myocardial hypothermia during extracorporeal circulation is commonly created by perfusion of cool cardioplegic solution into the ascending aorta and burial of ice sludge in the pericardial sac. Measurement of temperature of the atrial and ventricular septums during animal experiment and operations for ASD and VSD showed: (1) The temperature was obviously higher in the atrial septum than ventricular. (2) The atrial and ventricular temperature exceeded 15 degrees C 5 minutes after cardioplegic perfusion. (3) Influence on postoperative heart rate and rhythm was obvious when ventricular temperature raised above 15 degrees C during cardiac arrest, especially when the temperature difference between the atrium and ventricule was above 3 degrees C. But this influence may be decreased by maintaining ventricular temperature below 15 degrees C and temperature gradient less than 3 degrees C with a combination of cardioplegic perfusion, ice sludge in pericardial sac plus constant lavage of intracardiac cavity with saline at 4 degrees C.
Gao
S Z
SZ
First Affiliated Hospital of Hubei Medical College, Wuhan.
D000293:Adolescent; D000328:Adult; D000818:Animals; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D001831:Body Temperature; D002314:Cardioplegic Solutions; D002315:Cardiopulmonary Bypass; D002648:Child; D002675:Child, Preschool; D004285:Dogs; D005260:Female; D006324:Heart Arrest, Induced; D006343:Heart Septal Defects / Q000601:surgery; D006346:Heart Septum; D006801:Humans; D007036:Hypothermia, Induced; D008297:Male; D011183:Postoperative Complications / Q000209:etiology*
D002314:Cardioplegic Solutions