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Emergency aortocoronary bypass grafting after failed percutaneous transluminal angioplasty versus elective bypass
D Reber1, E Sendtner, P Tollenaere
1Clinic for Cardiothoracic Surgery, University Hospital, Regensburg, Germany.
Insights
Emergency coronary bypass grafting (CABG) after failed percutaneous transluminal angioplasty (PTCA) significantly increases patient morbidity. Emergency CABG patients experienced higher rates of myocardial infarction, blood loss, and ICU stays compared to elective CABG.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Critical Care Medicine
Background:
- Percutaneous transluminal angioplasty (PTCA) is a common procedure for coronary artery disease.
- Unsuccessful PTCA may necessitate emergency coronary artery bypass grafting (CABG).
- Outcomes of emergency CABG post-PTCA versus elective CABG are not well-delineated.
Purpose of the Study:
- To compare the perioperative outcomes of emergency CABG following failed PTCA with those of elective CABG.
- To assess differences in myocardial infarction, blood loss, reoperations, blood product usage, and intensive care unit (ICU) length of stay.
Main Methods:
- Retrospective analysis of 57 patients undergoing emergency CABG post-PTCA (Group I) and 57 patients undergoing elective CABG (Group II).
- Comparison of key perioperative morbidity indicators between the two groups.
- Statistical analysis to determine significant differences.
Main Results:
- Emergency CABG group showed significantly higher rates of perioperative myocardial infarction (31% vs 3%, p<0.0008).
- Increased blood loss (p<0.038), packed red blood cell usage (p<0.000), and longer ICU stays (p<0.000) were observed in the emergency group.
- Six reoperations (10%) were required in the emergency group versus none in the elective group.
Conclusions:
- Emergency CABG after failed PTCA is associated with significantly increased perioperative morbidity compared to elective CABG.
- These findings highlight the higher risks associated with urgent surgical revascularization following interventional failure.
- No hospital mortalities were reported in either group, indicating successful management despite increased morbidity.
Abstract:
From January 1980 through July 1994 fiftyseven patients underwent emergency coronary bypass grafting (CABG) after unsuccessful percutaneous transluminal angioplasty (PTCA), (Group I). This group was compared with a cohort of 57 patients, who underwent elective coronary bypass grafting (Group II). The 2 groups were compared in the rate of perioperative myocardial infarction, amount of blood loss, rethoracotomy because of bleeding, use of blood units and products, and length of stay in the intensive care unit. The data of both groups were retrospectively analyzed. Significant differences were observed: Perioprative myocardial infarction in group I was 18 patients (31%) versus 2 patients (3%) in group II (p<0.0008). Amount of blood loss was higher (p<0.038), and the use of packed red blood cells was higher too (p<0.000) in group I. The length of stay in the intensive care unit was longer (p<0.000) in group I. Six rethoracotomies (10%) occured in group I versus 0 in group II. There were no hospital mortalities in either groups. We conclude there is a significant increase in morbidity in patients with emergency CABG after failed PTCA than patients who underwent elective CABG.