Minimally Invasive Sutureless Aortic Valve Replacement is Associated With Improved Outcomes in Patients With Left Ventricular Dysfunction

Abstract

Objective

Patients with severe aortic stenosis and reduced left ventricular ejection fraction (LVEF) have a poor prognosis compared with patients with preserved LVEF. To evaluate the impact of sutureless Perceval (LivaNova, Italy) aortic bioprosthesis on LVEF and clinical outcomes in patients with baseline left ventricular (LV) dysfunction who underwent isolated aortic valve replacement (AVR).

Methods

Between March 2011 and August 2017, 803 patients underwent AVR with Perceval bioprosthesis implantation. Fifty-two isolated AVR had preoperative LVEF ≤45%. Mean age of these patients was 77 ± 6 years, 24 patients were female (46%), and mean EuroSCORE II was 9.4% ± 4.8%. Perceval bioprosthesis was implanted in 9 REDO operations. In 43 patients (83%), AVR was performed in minimally invasive surgery with an upper ministernotomy (n = 13) or right anterior minithoracotomy (n = 30).

Results

One patient died in hospital. Cardiopulmonary bypass and aortic cross-clamp times were 85.5 ± 26 minutes and 55.5 ± 19 minutes, respectively. At mean follow-up of 33 ± 20 months (range: 1 to 75 months), survival was 90%, freedom from reoperation was 100%, and mean transvalvular pressure gradient was 11 ± 5 mmHg. LVEF improved from 37% ± 7% preoperatively to 43% ± 8% at discharge (P < 0.01) and further increased to 47% ± 9% at follow-up (P = 0.06), LV mass decreased from 149.8 ± 16.9 g/m² preoperatively to 115.3 ± 11.6 g/m² at follow-up (P < 0.001), and moderate paravalvular leakage occurred in 1 patient without hemolysis not requiring any treatment.

Conclusions

AVR with sutureless aortic bioprosthesis implantation in patients with preoperative LV dysfunction demonstrated a significant immediate and early improvement in LVEF.

Keywords

aortic valve replacement sutureless aortic bioprosthesis echocardiography left ventricular dysfunction minimally invasive surgery

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