Minimally invasive mitral valve surgery in high-risk patients: operating outside the boxplot.

Abstract:

OBJECTIVES:(i) To establish who is at high risk for mitral surgery. (ii) To assess the performance of minimally invasive mitral valve surgery in high-risk patients by presenting early and late outcomes and compare these with those of the non-high-risk population. METHODS:We reviewed our database of prospective data of 1873 consecutive patients who underwent minimally invasive mitral surgery from 2003 to 2015. To establish an unbiased definition of risk cut-off, we considered as high-risk the 'outliers of risk' identified using boxplot analysis in relation to EuroSCORE II. RESULTS:Two hundred and five patients were outliers, with 98 as minor (EuroSCORE II ≥ 6%) and 107 as major outliers (EuroSCORE II ≥ 9%). Outliers accounted for several different comorbidities. Nineteen patients died while in hospital (9.2%); different postoperative complications were observed. Outliers had a significantly lower mean survival time and a higher risk of cardiac-related death than the general population; however, the worst outcomes were observed in major outliers. No statistically significant difference was found with regard to the need for mitral reintervention and the degree of mitral regurgitation at follow-up. CONCLUSIONS:Boxplot analysis helped to achieve an internal definition of risk cut-off, starting from EuroSCORE II ≥ 6%. Minimally invasive mitral surgery in these outliers of risk was associated with acceptable early and long-term results; however, major outliers with EuroSCORE II ≥ 9% may benefit from catheter-based procedures.

authors

Moscarelli M,Cerillo A,Athanasiou T,Farneti P,Bianchi G,Margaryan R,Solinas M

doi

10.1093/icvts/ivw038

subject

Has Abstract

pub_date

2016-06-01 00:00:00

pages

756-61

issue

6

eissn

1569-9293

issn

1569-9285

pii

ivw038

journal_volume

22

pub_type

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