NOBEL MEDICUS 38 | C LT: 13, SAYI: 2 63 ABSTRACT Objective: The aim of this study is to determine the factors affecting the mortality of oncologic patients operated with regional anesthesia for hip fracture surgeries. Material and Method: A hundred sixty oncologic patients who underwent hip fracture operations due to malignancy and trauma under regional anesthesia between 2008 and 2012 were retrospectively evaluated. All patients’ parameters such as age, gender, ASA score, anesthesia, operation type, hospitalization time spent in intensive care unit due to additional systemic pathologies, the time of healing and discharge with full recovery, duration of hospitalization, exitus status were compared respectively. Results: Ninety-eight (61.3%) patients were female and 62 (38.7%) were male. The average duration of hospitalization was 16.0 days. A hundred thirtyfour patients (83.8%) had an ASA score 2, and 15 patients had ASA score 4 (9.4%). Partial hip prosthesis (PHP) was performed in 40 patients (25.0%), total hip prosthesis (THP) was performed in 106 (66.3%) and tumor resection hip prosthesis (TRHP) was performed in 14 (8.7%) patient. There was statistically significant correlation between the ASA scores and the hospitalization time spent in intensive care unit (r=0.423; p<0.001). The average age of patients applied with PHP were higher than the average age of patients applied with THP and TRHP (p<0.001 and p=0.009, respectively). There was no statistically significant difference between the average age of patients applied with THP and TRHP surgery (p=0.888). There was no statistically significant difference between the patients with THP and TRHP abaut the duration of intensive care unit (p=0.687). Age and hospitalization time spent in intensive care unit were found to be a risk factor on death (Hazard Ratio (HR)=1.088; 95% CI:1.035-1.143; p=0.001). Conclusion: Oncologic patients who have prosthesis due to hip fractures have to be treated in intensive care unit because of systemic diseases which have a significant effect on mortality. Advanced age was detected as an important factor on death and the time spent in intensive care unit. However mortality was higher in total hip prosthesis patients, significant difference was not observed. Keywords: Hip fractures, regional anesthesia, hospital mortality. Nobel Med 2017; 13(2): 63-69 RETROSPECTIVE ANALYSIS OF HIP FRACTURES OF ONCOLOGIC PATIENTS OPERATED WITH REGIONAL ANESTHESIA: RISK FACTORS AND THEIR EFFECT ON MORTALITY Güldeniz Argun 1 , Deniz Oğuz 1 , Mesut Mısırlıoğlu 2 , Murat Arıkan 2 , Murat Aydın 3 , Süheyla Ünver 1 1 Oncology Training and Research Hospital, Department of Anesthesiology, Ankara 2 Oncology Training and Research Hospital, Department of Orthopedics and Traumatology, Ankara 3 Afyonkarahisar Suhut Public Hospital Medicine, Department of Orthopedics and Traumatology, Afyonkarahisar 63 NOBEL MEDICUS 38 | C LT: 13, SAYI: 2