• Kristina Radinovic, Zoka Milan, Ljiljana Markovic-Denic, Emilija Dubljanin-Raspopovic, Bojan Jovanovic, and Vesna Bumbasirevic.
• Centre for Anaesthesiology, Clinical Centre of Serbia, Belgrade, Serbia. Electronic address: kris.radinovic@gmail.com.
• Injury. 2014 Aug 1;45(8):1246-50.

IntroductionThe aim of this study was to identify risk factors for severe postoperative pain immediately after hip-fracture surgery.Patients And MethodsThree hundred forty-four elderly patients with an acute hip fracture were admitted to the hospital during a 12-months period. All patients who entered the study answered a structured questionnaire to assess demographic characteristics, previous diseases, drug use, previous surgery, and level of education. Physical status was assessed through the American Society of Anesthesiologists' preoperative risk classification, cognitive status using the Short Portable Mental Status Questionnaire, and depression using the Geriatric Depression Scale. The presence of preoperative delirium using the Confusion Assessment Method was assessed during day and night shifts until surgery. Pain was measured using a numeric rating scale (NRS). An NRS ≥ 7 one hour after surgery indicated severe pain.ResultsPatients with elementary-level education (8 yr in school) presented a higher risk for immediate severe postoperative pain than university-educated patients (> 12 yr in school) (P < 0.05). Higher cognitive function was associated with higher postoperative pain (P < 0.01). Patients with symptoms of depression and patients with preoperative delirium presented a higher risk for severe pain (P < 0.05, P < 0.01, respectively). Multivariate analysis showed that depression and a low level of education were independent predictors of severe pain immediately after surgery.ConclusionDepression and lower levels of education were independent predictors of immediate severe pain following hip-fracture surgery. These predictors could be clinically used to stratify analgesic risk in elderly patients for more aggressive pain treatment immediately after surgery.Copyright © 2014 Elsevier Ltd. All rights reserved.

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