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Eur J Cardiothorac Surg 2000;18:282-286
© 2000 Elsevier Science NL
Division of Cardiac Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
Received 22 March 2000; received in revised form 13 June 2000; accepted 28 June 2000.
Corresponding author. Tel.: +1-617-732-7678; fax: +1-617-732-6559
e-mail: jgbyrne{at}partners.org
Objective: We developed techniques for ‘inverted T’ partial upper re-sternotomy for aortic valve replacement (AVR) or re-replacement (AVreR) after previous cardiac surgery. We previously reported on decreased blood loss, transfusion requirements and total operative duration when compared to conventional full re-sternotomy. This report updates our series, one of the few to document a substantial benefit from a ‘minimally-invasive’ approach, refines a number of technical aspects of this new approach and reports follow-up. Methods: Between November 1996 and December 1999, we performed 34 AVRs or AVreRs after previous cardiac surgery by use of an ‘inverted T’ partial upper re-sternotomy. There were 25 (74%) men. Median ejection fraction was 54%, range 15–80%. Median age was 72, range 38–93. All were New York Heart Association functional class (NYHA) functional class II or III. Twenty-one (62%) had previous coronary artery bypass grafts (CABG) while 14 (41%) had previous valve surgery. Follow-up was 100% complete for a total of 593 patient months (median 19 months). Results: Twenty-three (66%) underwent AVR of the native aortic valve while 11 (33%) underwent AVreR of a prosthetic aortic valve. There were no intraoperative or valve-related complications, and no conversion to full re-sternotomy was necessary. There were two (5.9%) operative deaths from an arrhythmia on postoperative day 4 and a large stroke during surgery, respectively. Twenty-four (75%) patients were free of major complications. There was no need for reoperation for bleeding and patients required a median of two units of packed red blood cells. Complications included new atrial fibrillation (n=3, 9%), pacemaker implantation (n=3, 9%) and deep sternal wound infection (n=2, 6%). Median lengths of stay in the intensive care unit (ICU) and in the hospital were 1 and 7 days, respectively. There was one (3%) late deep sternal wound infection and 2/32 (6%) late deaths due to congestive heart failure at 22 months and myocardial infarction at 23 months, respectively. Conclusions: Partial upper re-sternotomy presents a safe and effective alternative approach to AVR and AVreR after previous cardiac surgery, and is associated with low morbidity and mortality.
Key Words: Minimally-invasive • Reoperation • Aortic valve replacement
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