Table 1 Summary of Included Studies

Nishida et al. [7]

2018

Retrospective cohort

86

23

63

Sakakibara Heart Institute

Operative mortality, postoperative morbidities, Long-term survival (mean follow-up period of 76.3 ± 55.0 months)

Zegdi (Late) et al. [9]

2008

Retrospective cohort

13

9

4

Service de Chirurgie Cardiovasculaire, Paris, France

Mechanisms of late failure, Long-term results were assessed on the basis of NYHA functional class, electrocardiogram and echocardiography

Zegdi et al. [11]

2008

Retrospective cohort

43

21

22

Service de Chirurgie Cardiovasculaire, Paris, France

Feasibility of Redo Mitral Valve Repair, Mechanisms of late Failure, Operative Mortality and Morbidity and Long-Term Outcomes.

Kwedar et al. [12]

2017

Retrospective cohort

812

130

682

US (Medicare Database)

Characteristics of Reoperation Cohort, Outcomes of Reoperation, Time to Reoperation, Hospital Mortality According to Hospital Annual Mitral Procedure Volume and Long-Term Survival

Ma et al. [13]

2018

Retrospective cohort

40

23

17

Shanghai Chest Hospital

Early mortality, Early major morbidities, Survival, reoperation for recurrent mitral valve pathology and echocardiographic data

Kilic et al. [14]

2018

Retrospective cohort

305

48

257

University of Pennsylvania Health System

The primary outcome was operative mortality. Secondary outcome included postoperative complications and long term freedom from death.

Suri et al. [15]

2006

Retrospective cohort

145

64

81

Mayo Clinic Rochester

Indications for Reoperation, Predictors of Late Mortality, Predictors of Third Mitral Operation and Follow up data

Dumont et al. [16]

2007

Retrospective cohort

188

68

120

The Cleveland Clinic

Mechanisms and Timing of Repair Failure, Freedom from reoperation, Incremental Risk Factors for Death after Mitral Valve Reoperation