Continuous femoral nerve block versus fascia iliaca compartment block as postoperative analgesia in patients with hip fracture.

INTRODUCTION: Systemic postoperative analgesia is inefficient in most patients with hip fracture, which is the reason for pain, especially during leg movement. Peripheral and plexus nerve blocks are an efficient option for postoperative pain relief. The aim of this study was to compare the effect and duration of continuous FNB versus a single FIC block as a postoperative analgesia in patients with hip fracture.

METHODS: Sixty patients with hip fracture were included and were randomly assigned to two groups of 30 patients: FNB group - patients with continuous femoral nerve block; and FIC group -patients with a single fascia iliaca compartment block. In all patients, pain intensity was measured at rest and in passive leg movement by using VDS (0-4) at several intervals: 1, 2, 12, 24, 36 and 48 hours after intervention. The amount of supplemental analgesia was measured, together with the time when the patient needed it for the first time, as well as the side effects.

RESULTS: The values of VDS were significantly lower in patients with FNB block versus patients with FIC block in rest and movement at the 24-hour intervals (46.67% vs 0% felt moderate pain), after 36 hours (43.33% vs 0% felt moderate pain) and 48 hours after intervention (46.67% vs 3.33% felt moderate to severe pain) for p < 0.05. Patients with FNB block received a significantly lower amount of supplemental analgesia, 23.3% of the FNB group vs 50% of the FIC group (p < 0.05). Registered side effects were were nausea, dizziness and sedation, and they were statistically significantly more frequent in the FIC group (p < 0.05).

CONCLUSION: Pain relief in the postoperative period was superior in the FNB group versus the FIC group at rest and in movement in patients with hip fracture.