[Postoperative wound infections. III. Patient related risk factors].
A nosocomial infection is determined by plenty of factors, such as a kind of flora and its virulence, hygiene standard, efficacy of material and instruments sterilisation, technical terms of work organisation in hospital, and other staff and patient related factors. The aim of this study was to establish the risk factors of postoperative wound infection related to patient. The material was 1527 surgically treated patients in the 3rd Surgical Department of the Collegium Medicum of the Jagiellonian University during one year. 66 patients with wounds of the head and 7 patients who died within three days after surgery without any wound infection signs were excluded from the study population. The healing of each wound was observed during the patient's hospitalisation and 30 days after his discharge from hospital, and in orthopedic patients 6 months after discharge. The total number of 132 infected wounds was identified. The population of 1352 wounds healed without any complications was a control group. All the data were recorded in a Wound Infection Register Card and were collected in the computer database. The data were statistically analysed. Relationships between single factor and postoperative wound infection were evaluated using chi-square statistics and in the small group Fisher's exact probability test. Odds ratios and corresponding 95% confidence intervals were computed for all variables. The overall wound infection rate was 8.9%. The significant factors (p < 0.05) were radiotherapy prior to operation, malnutrition, renal failure, respirator treatment, colostomy, tracheostomy in contaminated wounds and neoplastic disease in dirty wounds. Antibiotic therapy and the presence of remote active infection at the time of operation were found also risk factors.


CONCLUSIONS
Statistically significant risk factors of the postoperative wound infection related to patient's condition appeared malnutrition, radiotherapy prior to surgery, renal failure, artificial ventilation, presence of colostomy and coexisting another nosocomial infection at the operation.
Anielski
R
R
III Katedry i Kliniki Chirurgii Ogólnej Collegium Medicum Uniwersytetu Jagiellońskiego w Krakowie.
Barczyński
M
M
D016022:Case-Control Studies; D016009:Chi-Square Distribution; D016001:Confidence Intervals; D006259:Craniocerebral Trauma / Q000601:surgery; D003428:Cross Infection / Q000209:etiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008432:Mathematical Computing; D008875:Middle Aged; D016017:Odds Ratio; D011044:Poland / Q000453:epidemiology; D012307:Risk Factors; D013530:Surgical Wound Infection / Q000188:drug therapy / Q000453:epidemiology / Q000209:etiology*; D015996:Survival Rate; D014945:Wound Healing