[Coronary reoperations: recurrence of angina and clinical outcome].
OBJECTIVE
To evaluate the features of coronary artery bypass reoperations and to reduce the influence of the factors affecting postoperative morbidity and mortality.


METHODS
The records of 53 consecutive patients (88.7% of men, 11.3% of women; mean age 67.1+/-7.5 years) who underwent coronary artery bypass reoperations were reviewed retrospectively. Coronary artery bypass reoperations comprised 2.98% of all coronary artery bypass grafting operations during that period. Coronary artery bypass reoperations performed within 4-week period after the last operation and complex procedures were excluded.


RESULTS
Postoperative mortality after 53 reoperations and 1775 primary coronary artery bypass grafting operations was 7.5 and 2.52%, respectively, and the results are comparable with the results from other clinics of cardiac surgery. Mean time interval between primary coronary artery bypass grafting and reoperation was 90.7+/-49.9 months. Angiography at that period showed patency of venous and arterial conduits--34.6 and 76.5%, respectively. Twenty-nine patients (54.7%) received only venous conduits during reoperation. There were 2.4+/-1.1 anastomoses constructed during reoperation comparing to 3.5+/-0.9 anastomoses per patient during primary coronary artery bypass grafting.


CONCLUSIONS
According to our data mortality after coronary reoperations remains higher comparing to primary coronary artery bypass grafting, however, it does not differ significantly. We observed an increasing number of elderly patients in coronary reoperations. We think that it is related to the demographical changes within our country and increased use of arterial conduits during primary coronary artery bypass grafting operations. Arterial conduits are patent at least 10 years; it means that the time period until recurrent angina and reoperation is delayed. However, progression of arterial atherosclerosis remains the main reason for coronary artery bypass grafting reoperation.
Kinduris
Sarūnas
S
Institute for Biomedical Research, Kaunas University of Medicine, Lithuania. kinsar@one.lt
Benetis
Rimantas
R
Budrikis
Algimantas
A
D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000787:Angina Pectoris / Q000175:diagnosis / Q000209:etiology; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000401:mortality; D003627:Data Interpretation, Statistical; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis / Q000209:etiology; D012086:Reoperation; D012189:Retrospective Studies; D012307:Risk Factors; D016019:Survival Analysis; D013997:Time Factors; D016896:Treatment Outcome