Intrathecal levobupivacaine versus bupivacaine for inguinal hernia surgery: a randomized controlled trial

Ajay Singh, Anshu Gupta, Priyankar Kumar Datta, Maitree Pandey, Ajay Singh, Anshu Gupta, Priyankar Kumar Datta, Maitree Pandey

Abstract

Background: Levobupivacaine is an attractive alternative to racemic bupivacaine for spinal anesthesia due to the lower potential for cardio-toxicity and faster recovery profile. This study was designed to compare isobaric levobupivacaine with hyperbaric racemic bupivacaine with respect to intraoperative quality of anesthesia and the postoperative recovery profile in patients undergoing inguinal hernia surgery.

Methods: A total of 100 American Society of Anesthesiologists 1 and 2 patients, aged 18-60 years, undergoing elective daycare unilateral inguinal hernia surgery, were randomized into two groups. Group L received spinal anesthesia with 3 ml of 0.5% plain levobupivacaine. Group B received 3 ml of 0.5% hyperbaric racemic bupivacaine. Quality of anesthesia, sensory and motor block characteristics, duration of effective analgesia, time to mobilization, and incidence of side effects were compared.

Results: The quality of anesthesia was comparable between the two groups. No difference was observed in the block onset time or maximum block height. The duration of anesthesia was significantly shorter in group L compared with that in group B (206.2 ± 18.9 min vs. 224.1 ± 15.6 min, P < 0.001), as was duration of motor block (185.9 ± 20.3 min vs. 196.4 ± 21.2 min, P = 0.016) and time to walk unaided (321.9 ± 19.2 min vs. 356.7 ± 26.6 min, P < 0.001). The incidence of hypotension was less in group L (12%) compared to group B (32%) (P = 0.028).

Conclusions: Levobupivacaine is an effective alternative to bupivacaine for patients undergoing unilateral inguinal hernia surgery. It has a shorter duration of sensory and motor block, allowing earlier mobilization in daycare surgeries, and a lower incidence of intraoperative hypotension.

Keywords: Bupivacaine; Levobupivacaine; Spinal anesthesia.

Figures

Fig. 1.
Fig. 1.
CONSORT diagram showing the flow of participants through each stage of the trial.
Fig. 2.
Fig. 2.
Highest level of sensory block achieved in the two groups. Values are number of patients. Group L: levobupivacaine, Group B: bupivacaine.

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Source: PubMed

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