Anatomical circumstances and aortic cross-clamp time in minimally invasive aortic valve replacement.

Abstract:

OBJECTIVES:Prolonged operative times, potentially leading to increased morbidity, are a possible drawback of minimally invasive aortic valve replacement. The aim of this study was to assess the impact of anatomical circumstances in the chest on aortic cross-clamp time. METHODS:This retrospective study included 68 patients who underwent minimally invasive aortic valve replacement with the Perceval sutureless valve via right-anterior thoracotomy or with ministernotomy. Anatomical variables were measured during preoperative computer tomography scans. RESULTS:Aortic cross-clamp time was shorter in those having ministernotomy than in the right-anterior thoracotomy group (41.1 vs 52.3 min; P < 0.001). Cardiopulmonary bypass (CPB) time was not significantly different between groups (P = 0.09). A multivariable linear-regression model (P = 0.018) showed the aortic dextroposition variable to be a significant predictor of the aortic cross-clamp method and CPB times (P = 0.005 and P = 0.003) independent of other anatomical variables in the right thoracotomy group (10 mm deviation from optimal position prolonged the times for 240 and 600 s). For the whole cohort, a correlation between aortic valve dimensions and operative times was found (P = 0.046, P = 0.009). A linear-regression model (P = 0.046) predicted 90 s longer aortic cross-clamp time and 231 s longer CPB time for every 1 mm smaller aortic valve diameter. CONCLUSIONS:The anatomical variables are associated with the operative times in minimally invasive aortic valve replacement with sutureless valves. Considering this association, preplanning the procedure is recommended.

authors

Jug J,Štor Z,Geršak B

doi

10.1093/icvts/ivaa251

subject

Has Abstract

pub_date

2021-01-22 00:00:00

pages

204-212

issue

2

eissn

1569-9293

issn

1569-9285

pii

6000411

journal_volume

32

pub_type

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