A prospective study was conducted into wound healing disorders, following 274 operations from the beginning of planned aseptic surgery in "Karl Marx" Hospital of Managua. Wound healing disorders accounted for 4.7 per cent and wound infections for 1.8 per cent relative to the above total. Wound healing disorders accounted for 5.7 per cent and wound infections for 2.6 per cent relative to 192 cases of herniotomy. These data did not deviate from those of established hospitals, notwithstanding all critical appraisals of the method used in this study. Adiposity, advanced age, and inadequate hygiene are discussed as high-risk factors. The need is stressed for an adequate hygiene regime.