Triangular plasty of left atrium in correction of mitral failure

Objective. Studying of possibilities of procedure of the left atrium triangular plasty while doing correction of mitral failure, coexisted with left atriomegaly. Materials and methods. There were analyzed results of surgical treatment of 330 patients, suffering mitral failure in combination with left atriomegaly, who were operated in Amosov National Institute of Cardiovascular Surgery in period from 1 Jan 2005 to 1 Jan 2021 yr. The main group have consisted of 143 patients, to whom correction of mitral failure together with original procedure of triangular plasty of left atrium was performed. The control group have consisted of 187 patients, to whom correction of mitral failure was done only, although they suffered concurrent left atriomegaly. Results. Of 143 patients operated in the main group 3 died (lethality have constituted 2.1%). Dynamics of echocardiographic indices on the treatment stages was following: definitely-systolic index of left ventricle – (69.1 ± 12.1) ml/m2 before the operation, (59.3 ± 8.5) ml/m2 postoperatively, (48.4 ± 9.5) ml/m2 in late period; the left ventricle ejection fraction – 0.51 ± 0.05 preoperatively, 0.54 ± 0.05 postoperatively 0.56 ± 0.04 in late period. The left atrium diameter dynamics was following: (65.8 ± 4.1) mm preoperatively, (52.3 ± 2.1) mm postoperatively, and (53.5 ± 2.2) mm in late period. Of 187 оperated patients of control group 6 have died, (lethality have constituted 3.2%). Dynamics of echocardiographic indices on the treatment stages was following: definitely-systolic index of left ventricle – (68.3 ± 11.3) ml/m2 before the operation, (60.4 ± 9.3) ml/m2 postoperatively, (52.7 ± 7.2) ml/m2 in late period; the left ventricle ejection fraction – 0.52 ± 0.05 preoperatively, 0.53 ± 0.05 postoperatively, 0.5 ± 0.04 in late period. Diameter of left atrium: (66.5 ± 3.7) mm preoperatively, (63.5 ± 2.3) mm postoperatively, (71.5 ± 2.4) mm in late period. Conclusion. Triangular plasty of left atrium is a low-traumatic and effective procedure, leading to significant improvement in its morphometry and accompanied by low risk of hospital lethality.