BJA Advance Access originally published online on September 28, 2009
British Journal of Anaesthesia 2009 103(5):750-754; doi:10.1093/bja/aep263
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Comparison of intrathecal fentanyl and sufentanil in low-dose dilute bupivacaine spinal anaesthesia for transurethral prostatectomy
1 Department of Anaesthesiology and Pain Medicine and
2 Anaesthesia and Pain Research Institute, Yonsei University College of Medicine, 250 Seongsan-no, Seodaemun-gu, Seoul 120-752, Republic of Korea
* Corresponding author. E-mail: hkkil{at}yuhs.ac
Background: The administration of low-dose bupivacaine can limit the distribution of spinal block to reduce adverse haemodynamic effects. Intrathecal opioids can enhance analgesia in combination with subtherapeutic doses of local anaesthetics. We aimed at comparing the efficacy of intrathecal fentanyl and sufentanil with low-dose diluted bupivacaine for transurethral prostatectomy (TURP) in elderly patients.
Methods: Seventy patients undergoing TURP were randomly allocated into two groups. Group F (n=35) received fentanyl 25 µg+bupivacaine 0.5% (0.8 ml)+normal saline 0.3 ml and Group S (n=35) received sufentanil 5 µg+bupivacaine 0.5% (0.8 ml)+normal saline 0.7 ml—in total, bupivacaine 0.25% (1.6 ml) intrathecally. Onset and duration of the sensory block, the degree of the motor block, side-effects, and the perioperative analgesic requirements were assessed.
Results: The median peak level of the sensory block was significantly higher in Group S than in Group F (P=0.049). Group S required fewer perioperative analgesics than Group F (P=0.008). The time to the first analgesic request was longer in Group S (P=0.025). There were no differences between the groups for the onset and recovery time of the sensory block, degree of the motor block, quality of anaesthesia, or adverse effects.
Conclusions: Low-dose diluted bupivacaine with fentanyl 25 µg or sufentanil 5 µg can provide adequate anaesthesia without haemodynamic instability for TURP in elderly patients. However, sufentanil was superior to fentanyl in the quality of the spinal block produced.
Keywords: anaesthetic techniques, subarachnoid; anaesthetics local, bupivacaine; analgesics opioid, fentanyl; analgesics opioid, sufentanil; surgery, urological
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