Concomitant temporary mechanical support in high-risk coronary artery bypass surgery

Area of Science:

• Cardiology
• Cardiovascular Surgery
• Medical Devices

Background:

• Patients with low left ventricular ejection fraction (LVEF) undergoing high-risk coronary artery bypass grafting (CABG) face elevated risks of postcardiotomy cardiogenic shock.
• Severe left ventricular dysfunction often limits surgical revascularization options.

Purpose of the Study:

• To evaluate the safety and efficacy of planned concomitant microaxial temporary mechanical support (MA-TMS) device placement.
• To assess MA-TMS as a bridge-to-recovery strategy in high-risk CABG patients.

Main Methods:

• Retrospective review of 13 patients with LVEF <30% and NYHA Class III/IV symptoms undergoing CABG with prophylactic MA-TMS.
• Data collected from October 2017 to May 2019 at a single institution.

Main Results:

• The study included 13 high-risk patients (92% male, mean age 64.8 years) with severe left ventricular dysfunction.
• No postoperative myocardial infarctions or deaths occurred; patients showed rapid recovery with early extubation and mobilization.
• Average MA-TMS duration was 5.7 days, with a mean postoperative length of stay of 16.7 days.

Conclusions:

• Prophylactic MA-TMS enables safe and effective surgical revascularization in patients with severe left ventricular dysfunction.
• This strategy provides an alternative to durable ventricular assist devices for selected high-risk patients.