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Minimally invasive versus conventional reoperative coronary artery bypass
K B Allen1, R G Matheny, R J Robison
1Department of Cardiovascular and Thoracic Surgery, St. Vincent Hospital and Health Care Center, Indianapolis, Indiana, USA.
Insights
Minimally invasive single-vessel redo coronary artery bypass grafting (CABG) reduces morbidity compared to conventional methods. This technique offers faster recovery and shorter hospital stays with similar survival rates.
Area of Science:
- Cardiovascular Surgery
- Minimally Invasive Surgery
- Cardiac Surgery Outcomes
Background:
- Reoperative (redo) coronary artery bypass grafting (CABG) carries significant morbidity.
- Comparison of conventional versus minimally invasive techniques for single-vessel redo CABG.
Purpose of the Study:
- To compare perioperative outcomes of conventional single-vessel redo CABG versus minimally invasive redo CABG.
- To evaluate the safety and efficacy of minimally invasive approaches in redo CABG procedures.
Main Methods:
- Retrospective study comparing two groups: Group A (minimally invasive, limited anterior thoracotomy, no cardiopulmonary bypass) and Group B (conventional, median sternotomy, cardiopulmonary bypass).
- Both groups underwent single-vessel redo CABG of the left anterior descending artery using the left internal mammary artery.
- Groups were matched for age, sex, ejection fraction, and risk stratification.
Main Results:
- No significant differences in mortality, cerebrovascular accidents, myocardial infarctions, or reoperations for bleeding between groups.
- Minimally invasive approach (Group A) showed significant reductions in atrial fibrillation, time to extubation, transfusions, and length of hospital stay.
- At a mean follow-up of 12 months, 87% of Group A patients were alive and asymptomatic.
Conclusions:
- Minimally invasive single-vessel redo CABG is a safe alternative to conventional methods.
- This technique may significantly reduce the morbidity associated with conventional single-vessel redo CABG.
- Minimally invasive redo CABG offers improved short-term recovery outcomes.
Background:
Conventional reoperative (redo) coronary artery bypass grafting (CABG) is associated with significant morbidity. This retrospective study compared perioperative outcomes of conventional single-vessel redo CABG versus redo CABG done by a minimally invasive technique.
Methods:
Group A consisted of 23 consecutive patients from September 1995 to July 1996 who underwent single vessel redo CABG of the left anterior descending artery with the left internal mammary artery using a limited anterior thoracotomy without cardiopulmonary bypass; group B consisted of 12 consecutive patients from November 1984 to July 1994 who underwent the same procedure using a median sternotomy with cardiopulmonary bypass. The two groups were similar with regard to age, sex, preoperative ejection fraction, and risk stratification.
Results:
Mortality, cerebrovascular accidents, myocardial infarctions, and reoperations for bleeding were not significantly different between the groups. However, the patients in group A had significant reductions in atrial fibrillation, time to extubation, transfusions required, and length of cardiac recovery and hospital stay. With a mean of 12 +/- 6 months of follow-up, 87% of the patients in group A (20 of 23) are alive and asymptomatic. Actuarial survival rates for the patients in group B at 1, 2, and 10 years are 83%, 83%, and 72%, respectively.
Conclusions:
Minimally invasive single-vessel redo CABG can be performed safely and may reduce the morbidity associated with conventional single-vessel redo CABG.