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THE JOURNAL OF CARDIOVASCULAR SURGERY

Rivista di Chirurgia Cardiaca, Vascolare e Toracica


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The Journal of Cardiovascular Surgery 2005 Febbraio;46(1):51-4

lingua: Inglese

Anterolateral right thoracotomy for mitral valve procedure after previous coronary artery bypass grafting with functioning internal mammary artery grafts

Yoda M., Minami K., Fritzsche D., Bairaktaris A., Koerfer R.

Department of Thoracic and Cardiovascular Surgery Heart Center North Rhine-Westphalia University of Bochum, Germany


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Aim. Mitral valve procedure after previous coronary artery bypass grafting (CABG) with functioning internal mammary artery (IMA) grafts has high risk. Especially, internal mammary artery grafts injury may be fatal. The anterolateral right thoracotomy affords easy access to the right atrium with minimal dissection, and minimizes the risk of injury to the IMA grafts. We reviewed our operative technique and outcome after mitral valve procedure after previous CABG with functioning IMA grafts.
Methods. Thirteen patients (11 male and 2 female, mean age of 67.7±8.5 years, range 54 to 80 years) underwent mitral valve replacement after previous CABG with functioning IMA grafts from march 1993 to september 2002. The mean interval between the previous CABG and the mitral valve procedure was 3.8 years (range 9 months to 8 years). Four patients had simultaneous mitral valve procedures at initial CABG (2 repairs and 2 replacements). The operation has performed through the anterolateral right thoracotomy, under ventricular fibrillation with moderate hypothemia and without cardioplesia.
Results. Mitral valve repair was performed in 3 patients, mitral valve replacement in 10 patients. The mean coronary bypass time was 69.1±16.2 min (range 45 to 98 min). The operation time was 159.3±29.4 min (range 120 to 219 min). Intensive care unit stay days was 1.9±1.6 days (range 1 to 5 days). Peak CK/CK-MB values were 555.1±290.4 IU/16.6±10.7 IU (range 176 to 924 IU/7 to 44 IU). Peak troponin I value was 9.5±5.2 pg/mL (range 4 to 17.8 pg/mL). There was no IMA injury and no early death. Other complications were newly arrhythmia in 3 patients, renal insufficiency in 1 patient, reoperation for bleeding in 1 patient.
Conclusion. Anterolateral right thoracotomy approach, ventricular fibrillation with moderate hypothemia without cardioplesia were a safe and good method for mitral valve operation after previous CABG with functioning IMA graft.

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