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Low‐Dose Dobutamine Stress Echocardiography to Predict Reversibility of Mitral Regurgitation with CABG
Author(s) -
Roshanali Farideh,
Mandegar Mohammad Hossein,
Yousefnia Mohammad Ali,
Alaeddini Farshid,
Wann Samuel
Publication year - 2006
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2006.00163.x
Subject(s) - medicine , ejection fraction , cardiology , mitral regurgitation , dobutamine , bypass grafting , artery , mitral valve repair , mitral valve , heart failure , hemodynamics
The optimal management of moderate (grade 2–3+) ischemic mitral regurgitation (MR) in patients undergoing coronary artery bypass grafting (CABG) remains controversial. While CABG alone can reverse regurgitation in some patients with moderate MR, adjunctive mitral repair may be necessary in others. We performed low‐dose dobutamine stress echocardiography (DSE) in 60 patients with moderate MR who were about to undergo CABG. Group I, 25 patients who demonstrated reduction in MR during DSE, had CABG alone. Group II, 35 patients in whom MR was unchanged during DSE, had mitral valve repair as well as CABG. MR was reduced postoperatively in both groups (P < 0.0001). Postoperative ejection fraction in Group I (12.2%) improved more than that in Group II (9.3%) (P < 0.01). We conclude that CABG alone may be sufficient to correct moderate MR when MR is reduced during DSE.