[Risk and postoperative complications in abdominal surgery in elderly patients (author;s transl)].

1005 case histories of patients, older than 70 years, were studied retrospectively: 496 abdominal interventions (lethality - 29%), 509 extraabdominal interventions (lethality - 14%). In each patient 75 preoperative data are compared to 50 data of the intraoperative and postoperative period. There is a correlation between preoperative findings and postoperative complications and lethality. The main factors of risk are: Hb less than 10 g%, Creatinine greater than 1,5 mg%. The analysis implies the necessity of intensive preoperative therapy as well as the immediate correction of even slight post-operative deviations of the "norm".