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Beyond cold cardioplegia
A Lessana1, M Romano, A I Singh
1Department of Cardiovascular Surgery, Hopital Europeen de Paris La Roseraie, France.
Insights
Warm blood cardioplegia is effective for myocardial protection during heart surgery. This technique resulted in low rates of mortality and complications in patients undergoing revascularization or valvular procedures.
Area of Science:
- Cardiology
- Cardiac Surgery
- Cardiovascular Medicine
Background:
- Myocardial protection is crucial during cardiac surgery.
- Traditional cardioplegia methods have limitations.
- Optimizing myocardial protection strategies is an ongoing area of research.
Purpose of the Study:
- To evaluate the efficacy and safety of continuous antegrade and retrograde normothermic (37°C) blood cardioplegia.
- To assess the outcomes of patients undergoing myocardial revascularization or valvular disease surgery using this cardioplegia method.
Main Methods:
- Prospective study of 115 consecutive patients undergoing cardiac surgery.
- Administration of continuous antegrade and retrograde warm (37°C) blood cardioplegia.
- Monitoring of cross-clamp time, reperfusion time, and postoperative outcomes.
Main Results:
- Low mortality rate (4.3%) and low incidence of perioperative myocardial infarction (1.7%).
- Most patients (85%) returned to normal sinus rhythm spontaneously.
- Patients with prolonged cross-clamp times (>80 minutes) generally had favorable outcomes.
Conclusions:
- Continuous antegrade and retrograde warm blood cardioplegia is a safe and effective method for myocardial protection in open heart surgery.
- This technique demonstrates favorable clinical outcomes, including reduced complications.
- The method is now standard practice for all open heart procedures at the institution.
Abstract:
One hundred fifteen consecutive patients were operated on for myocardial revascularization or valvular disease or both with continuous antegrade and retrograde aerobic warm (37 degrees C) blood cardioplegia. Mean cross-clamp time was 56.3 +/- 21 minutes (+/- standard deviation). Mean reperfusion time was 18.4 +/- 11.8 minutes (range, 5 to 81 minutes). Five patients (4.3%) died, and 15 (13%) needed inotropic support. Two (1.7%) required intraaortic balloon support. Two patients (1.7%) had evidence of perioperative myocardial infarction, and 98 (85%) returned spontaneously to normal sinus rhythm. Sixteen patients had a cross-clamp time greater than 80 minutes. All 16 of them had an uneventful postoperative course except for 1 patient who required inotropic drugs. This method of myocardial protection is now used for all open heart procedures in our institution.