The impact of loco-regional anaesthesia on postoperative opioid use in elderly hip fracture patients: an observational study

Purpose Hip fractures are a common health problem among the elderly with an increasing incidence. They are associated with high mortality and morbidity. Optimal pain management remains challenging and inadequate pain control is known for negatively affecting outcomes. Loco-regional anaesthetics (LRA) have been proven to benefit pain management and to lower the risks of opioid use and -related side effects. We aimed to evaluate the use and efficacy of different LRA in elderly hip fracture patients. Methods Single-center cohort study of elderly hip fracture patients, who were treated in central Switzerland. We compared patients who received LRA in the form of a femoral nerve block (FNB) or a continuous femoral nerve catheter (CFNC) with patients who did not receive LRA. Primary outcomes were pain—as measured in perioperative morphine use—hospital length of stay (HLOS), postoperative complications, postoperative falls and mortality. Results 407 patients were included for analysis. Mean age was 85.2 (SD6.3). There was a significant difference in intraoperative morphine use between the groups ( p = 0.007). Postoperative morphine use differed significantly and was lowest in patients with FNB and highest in patients without LRA ( p