Risk factors associated with intraoperatively acquired pressure ulcers in the park-bench position: a retrospective study

摘要

Patients undergoing surgery in the park-bench position are at high risk of developing intraoperatively acquired pressure ulcers (IAPUs). The purpose was to examine retrospectively risk factors associated with IAPUs in the park-bench position. This study was conducted at a general hospital during the period of September 2010 to September 2012. Twenty-one potential risk factors were evaluated using data obtained from the hospital database. IAPUs developed in 30 of 277 patients (11%). Perspiration was statistically found to be independently associated with IAPUs [OR 309, 95% confidence interval (Cl) 1.07-858, P = 0037]. A length of surgery of more than 6 hours was identified to be likely associated with IAPUs (OR 264, 95% Cl 084-908, P = 0095) compared with less than 6 hours. Furthermore, there was an interaction between the length of surgery and the core temperature; that is, when the length of surgery was more than 6 hours, a core temperature of more than 381 degrees C at the end of surgery had a higher odds ratio (845, 95% Cl 304-2746, P < 0001) than that at a lower core temperature (320, 95% Cl 123-878, P = 0017). These results suggest that perspiration and core temperature are preventable causative factors of pressure ulcers, even under conditions of prolonged surgery in the park-bench position.