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  1. Fulltext Comparison of 0.5% ropivacaine and 0.5% levobupivacaine for infraclavicular brachial plexus block
    Mageswaran R, Choy YC
    Med J Malaysia, 2010 Dec;65(4):300-3.
    PMID: 21901950
    A prospective randomized double-blind study was conducted which involved, 60 ASA 1-2, aged 18-65 years patients, who had elective or emergency orthopaedic surgeries of the upper limbs. They were randomly divided into two groups: Group I received 30 mls of 0.5% ropivacaine; and Group II received 0.5% levobupivacaine for infraclavicular brachial plexus block based on the coracoid approach. The onset time required for sensory block of all required dermatomes (C5-T1) and the onset time of motor block were documented. Based on the Visual Analogue Score, pain scores were recorded every 30 minutes during surgery and at the 6th hour. The mean onset time (SD) for sensory block with ropivacaine was 13.5 +/- 2.9 minutes compared to levobupivacaine at 11.1 +/- 2.6 minutes (p = 0.003). The onset time for motor block was 19.0 +/- 2.7 minutes in Group I compared to 17.1 +/- 2.6 minutes (p = 0.013) in Group II. Patients in both groups experienced both mild to moderate pain at the 6th hour. In conclusion, there were statistically significant differences in the onset-time for sensory and motor block. However, there was no statistically significant difference in terms of effectiveness of analgesia at the 6th hour. Although the clinical advantage of levobupivacine is not substantial, its safety profile becomes a major consideration in the choice of local anaesthetic for brachial plexus block where a large volume is required for an effective result.
    Matched MeSH terms: Bupivacaine/pharmacology
  2. Comparison of the effect of scalp block analgesia bupivacaine 0.25% and clonidine 2 μg/kg with bupivacaine 0.25% and dexamethasone 8 mg on cortisol levels and Numeric Rating Scale in craniotomy tumour
    Maharani ND, Fuadi A, Halimi RA
    Med J Malaysia, 2023 Nov;78(6):808-814.
    PMID: 38031225
    INTRODUCTION: Craniotomy tumour is brain surgery that can induce a stress response. The stress response can be measured using haemodynamic parameters and plasma cortisol concentration. The stress response that occurs can affect an increase in sympathetic response, such as blood pressure and heart rate, which can lead to an increase in intracranial pressure. Scalp block can reduce the stress response to surgery and post-operative craniotomy tumour pain. The local anaesthetic drug bupivacaine 0.25% is effective in reducing post-operative pain and stress in the form of reducing plasma cortisol levels. The adjuvant addition of clonidine 2 μg/kg or dexamethasone may be beneficial.

    MATERIALS AND METHODS: A randomised control clinical trial was conducted at the Central Surgery Installation and Hasan Sadikin General Hospital Bandung and Dr. Mohammad Husein Hospital Palembang from December 2022 to June 2023. A total of 40 participants were divided into two groups using block randomisation. Group I receives bupivacaine 0.25% and clonidine 2 μg/kg, and group II receives bupivacaine 0.25% and dexamethasone 8 mg. The plasma cortisol levels of the patient will be assessed at (T0, T1 and T2). All the patient were intubated under general anesthaesia and received the drug for scalp block based on the group being randomised. Haemodynamic monitoring was carried out.

    RESULTS: There was a significant difference in administering bupivacaine 0.25% and clonidine 2μg/kg compared to administering bupivacaine 0.25% and dexamethasone 8 mg/kg as analgesia for scalp block in tumour craniotomy patients on cortisol levels at 12 hours post-operatively (T1) (p=0.048) and 24 hours post-surgery (T2) (p=0.027), while post-intubation cortisol levels (T0) found no significant difference (p=0.756). There is a significant difference in Numeric Rating Scale (NRS) at post-intubation (T0) (p=0.003), 12 hours post-operatively (T1) (p=0.002) and 24 hours post-surgery (T2) (p=0.004), There were no postprocedure scalp block side effects in both groups.

    CONCLUSION: The study found that scalp block with 0.25% bupivacaine and 2μg/kg clonidine is more effective in reducing NRS scores and cortisol levels compared bupivacaine 0.25% and dexamethasone 8mg in tumour craniotomy patients.

    Matched MeSH terms: Bupivacaine/pharmacology
  3. Caudal block analgesia in labouring women
    Kuah KB
    Med J Malaysia, 1974 Mar;28(3):187-90.
    PMID: 4278020
    Matched MeSH terms: Bupivacaine/pharmacology*
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