Low-volume, single-shot crystalloid cardioplegia is safe for isolated aortic valve replacement

Peter Matt1, Emilio Arbeleaz, Goetz Schwirtz

  • 1Clinic for Cardiac Surgery Basel, Heart Surgery Center Basel-Bern, Spitalstrasse 21, Basel, Switzerland. pmatt@uhbs.ch

Insights

This study found that low-volume cardioplegia (Cardioplexol) is safe and effective for aortic valve replacement (AVR). It simplifies the procedure with low mortality, though longer cross-clamp times slightly increased myocardial damage markers.

Area of Science:

  • Cardiovascular Surgery
  • Cardiac Anesthesia
  • Cardioplegia Delivery

Background:

  • Aortic valve replacement (AVR) is a common cardiac surgery.
  • Effective myocardial protection during AVR is crucial.
  • Current cardioplegia techniques vary in volume and administration.

Purpose of the Study:

  • To evaluate the safety and efficacy of a low-volume, single-shot crystalloid cardioplegia (Cardioplexol) during isolated AVR.
  • To assess intraoperative events and postoperative myocardial damage markers.

Main Methods:

  • Retrospective review of 61 consecutive patients undergoing isolated AVR.
  • Administration of 100 mL single-shot crystalloid cardioplegia (Cardioplexol).
  • Monitoring of intraoperative course, postoperative Troponin T and CK-MB levels, and 30-day mortality.

Main Results:

  • Cardioplexol induced immediate cardiac arrest in all patients.
  • Intraoperative courses were uneventful.
  • Postoperative myocardial damage markers (Troponin T, CK-MB) were low, with a slight increase correlated with cross-clamp time.
  • 30-day mortality was 3% and attributed to noncardiac causes.

Conclusions:

  • Low-volume, single-shot crystalloid cardioplegia (Cardioplexol) appears safe and effective for isolated AVR.
  • The technique simplifies and potentially shortens the surgical procedure.
  • Further studies may explore optimal cross-clamp durations with this cardioplegia method.