A CLINICAL COMPARATIVE STUDY OF ULTRASOUND-GUIDED POPLITEAL NERVE BLOCK WITH 0.5% BUPIVACAINE HYDROCHLORIDE WITH AND WITHOUT 8MG DEXAMETHASONE FOR KNEE SURGERIES

RAMESH KALAPALA; EMEEMA BANDRAPALLI; MALAPOLU NEERAJA; ANAND

doi:10.22159/ijcpr.2023v15i5.3062

Authors

RAMESH KALAPALA Department of Anaesthesiology, Guntur medical college, Guntur, Andhra Pradesh, India
EMEEMA BANDRAPALLI Department of Anaesthesiology, Guntur medical college, Guntur, Andhra Pradesh, India
MALAPOLU NEERAJA Department of Anaesthesiology, Guntur medical college, Guntur, Andhra Pradesh, India
ANAND Department of Anaesthesiology, Guntur medical college, Guntur, Andhra Pradesh, India

DOI:

https://doi.org/10.22159/ijcpr.2023v15i5.3062

Keywords:

Popliteal nerve block, Ultrasound-guided, In ASA III-IV high-risk patients, 0.5% bupivacaine hydrochloride with dexamethasone postoperative analgesia

Abstract

Objective: This study aimed to see how adding dexamethasone 8 mg to 0.5% bupivacaine affected the length of sensory and motor blockage of the popliteal sciatic nerve in ankle and foot surgeries.

Methods: This prospective randomized clinical comparison trial enrolled 60 patients with American Society of Anesthesiologists (ASA) physical status grades III and IV, aged 50-80 y, scheduled for ankle and foot procedures from March 2023 to July 2023. Patients were assigned into two groups of 30 at random. 28 ml of 0.5% bupivacaine and 8 mg dexamethasone were given to Group D. Group N was given 28 ml of o.5% bupivacaine and 2 ml of NS. Here, 20 ml was used for sciatic nerve block and 10 ml for saphenous nerve block.

Results: The mean onset of sensory block in group D was 23.2±6.8 min, while 21.7±6.9 min in group N (p 0.3999). This was not statistically significant. The onset of motor block was 22.9±7.9 in group D and 22.3±7.1 in group N, which were statistically insignificant (p 0.7581). The duration of the motor block in group D was 11.3±3.2 h, whereas it was 5.9±2.3 h in group N (p 0.0001), which was statistically significant. The length of the sensory block in group D was 14.9±3.8 h, while it was 8.3±3.4 h in group N (p 0.0001), which was also statistically significant. The VAS score in group N was significantly higher than in group D; it began 3 h after surgery and remained at 4 h, 5 h, 6 h, 8 h, 10 h, and 12 h. All 30 patients in Group N required their first rescue analgesia during the first 12 h postoperatively. In contrast, only 12 patients (40%) required their first analgesia within the first 12 h, and 18 (60%) requested their first analgesia within the second 12 h.

Conclusion: Adding 8 mg dexamethasone to 0.5% Bupivacaine hydrochloride in ultrasound-guided popliteal and saphenous nerve blocks for ankle and foot procedures extends postoperative sensory and motor block duration.

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