Cardiac magnetic resonance analysis of mitral annular dynamics after mitral valve repair
Clinics
;
75: e2428, 2020. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-1142784
ABSTRACT
OBJECTIVES:
The aim of this study was to analyze mitral annulus (MA) dynamics using cardiac magnetic resonance (CMR) in patients with degenerative mitral insufficiency who underwent mitral valve repair (MVR).METHODS:
Mitral valve imaging was performed by CMR in twenty-nine patients with degenerative mitral insufficiency who underwent MVR between July 2014 and August 2016, with quadrangular resection of the posterior leaflet without ring annuloplasty. They were prospectively followed up from the preoperative period up to 2 years postoperatively.RESULTS:
We observed a significant reduction in all measurements of the MA after surgery. The mean systolic circumference of the MA was reduced from 13.28±1.95 cm to 11.50±1.59 cm, and the diastolic circumference was reduced from 12.51±2.01 cm to 10.66±2.09 cm in the immediate postoperative period, measures that remained stable 2 years after MVR (p<0.001). The mean maximum area of the MA was significantly reduced from 14.34±4.03 to 10.45±3.17 cm2 when comparing the immediate postoperative period and the 2 year follow-up (p<0.001). The same occurred with the mean minimum area of the MA, which was reduced from 12.53±3.68 cm2 to 9.23±2.84 cm2 in the same period, and this reduction was greater in the antero-posterior diameter than in the mid-lateral diameter. The mobility of the MA was preserved after surgery, ranging between 19.6% and 25.7% at 2-year follow-up.CONCLUSION:
We observed a significant reduction in the MA size after MVR, with preservation of the MA mobility at the 2-year follow-up.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Implante de Prótese de Valva Cardíaca
/
Insuficiência da Valva Mitral
Tipo de estudo:
Estudo observacional
/
Estudo prognóstico
Limite:
Humanos
Idioma:
Inglês
Revista:
Clinics
Assunto da revista:
Medicina
Ano de publicação:
2020
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Hospital das Cinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo/BR
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