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2016 ; 129
(18
): 2199-203
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Echocardiographic Follow-up of Robotic Mitral Valve Repair for Mitral
Regurgitation due to Degenerative Disease
#MMPMID27625092
Wang Y
; Gao CQ
; Shen YS
; Wang G
Chin Med J (Engl)
2016[Sep]; 129
(18
): 2199-203
PMID27625092
show ga
BACKGROUND: Mitral valve (MV) repair can now be carried out through small
incisions with the use of robotic assistance. Previous reports have demonstrated
the excellent clinical result of robotic MV repair for degenerative mitral
regurgitation (MR). However, there has been limited information regarding the
echocardiographic follow-up of these patients. The present study was therefore to
evaluate the echocardiographic follow-up outcomes after robotic MV repair in
patients with MR due to degenerative disease of the MV. METHODS: A retrospective
analysis was undertaken using data from the echocardiographic database of our
department. Between March 2007 and February 2015, 84 patients with degenerative
MR underwent robotic MV repair. The repair techniques included leaflet resection
in 67 patients (79.8%), artificial chordae in 20 (23.8%), and ring annuloplasty
in 79 (94.1%). Eighty-one (96.4%) of the 84 patients were eligible for
echocardiographic follow-up assessment, and no patients were lost to follow-up.
RESULTS: At a median echocardiographic follow-up of 36.0 months (interquartile
range 14.3-59.4 months), four patients (4.9%) developed recurrent mild MR, and no
patients had more than mild MR. Mean MR grade, left atrial diameter (LAD), left
ventricular end-diastolic diameter (LVEDD), and left ventricular ejection
fraction (LVEF) were significantly decreased when compared with preoperative
values. Mean MR grade decreased from 3.96 ± 0.13 to 0.17 ± 0.49 (Z = -8.456, P <
0.001), LAD from 43.8 ± 5.9 to 35.5 ± 3.8 mm (t = 15.131, P < 0.001), LVEDD from
51.0 ± 5.0 to 43.3 ± 2.2 mm (t = 14.481,P< 0.001), and LVEF from 67.3 ± 7.0% to
63.9 ± 5.1% (t = 4.585, P < 0.001). CONCLUSION: Robotic MV repair for MR due to
degenerative disease is associated with a low rate of recurrent MR, and a
significant improvement in MR grade, LAD, and LVEDD, but a significant decrease
in LVEF at echocardiographic follow-up.