Background: this study aimed to describe the pain relief outcomes after hip replacement surgery by continuous Pericapsular Nerve Group Block (PENG Block) in combination with lateral femoral cutaneous nerve (LFCN) block under the guidance of ultrasound.
Methodology: sixty patients who had hip surgery at E University hospital, Hanoi, Vietnam from August 2021 to August 2022 belonged to two groups: group of patients with pain relief with PENG block (initial dose: 10ml ropivacaine 0.25%, maintainance dose per hour: 5ml ropivacaine 0.25%) in combination with LFCN block 5ml ropivacine 0.25% (PENG BLOCK group, n = 30) and group of patients with patient-controlled intravenous analgesia (PCA group, n = 30). Outcomes regarding clinical and pain score from initiation of insertion or PCA insertion (H0) to after 72 hours (H72) were recorded.
Results: The average visual analogue scale (VAS) score at rest of both groups was at low pain level (VAS < 4). The average VAS score of the 2 groups at most of the time of the study did not have a statistically significant difference. The VAS on movement at the time points H18, H21, H24, H30, H36, H48, H72 of the PENG BLOCK group was lower than that of the PCA group and the difference was statistically significant between the two groups (p < 0.05). The rate of vomiting/nausea of patients in the PCA group was statistically significantly higher than in the PENG BLOCK group (p = 0.006).
Conclusion: Pericapsular Nerve Group Block (PENG block) combined with lateral femoral cutaneous nerve block method has good pain relief results when compared with traditional PCA analgesia method in pain relief after hip replacement.
Key words: Pericapsular Nerve Group Block, lateral femoral cutaneous nerve, hip replacement, multimodal analgesia, ultrasound-guided analgesia, patient-controlled analgesia, side effects.
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