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  • Title: Combination of intrathecal sufentanil 10 mug plus bupivacaine 2.5 mg for labor analgesia: is half the dose enough?
    Author: Sia AT, Chong JL, Chiu JW.
    Journal: Anesth Analg; 1999 Feb; 88(2):362-6. PubMed ID: 9972757.
    Abstract:
    UNLABELLED: This controlled, double-blinded, prospective trial of 42 parturients in early labor was conducted to determine whether halving the total amount of intrathecal (i.t.) sufentanil and bupivacaine reduced the incidence of systemic hypotension while providing adequate analgesia with minimal lower limb motor block. Combined spinal-epidural analgesia (CSE) was instituted; Group A (n = 21) received a total of 10 microg of sulfentanil plus 2.5 mg of bupivacaine, whereas Group B (n = 21) received half that dose. Compared with Group B, Group A had a higher incidence of hypotension (nine parturients in Group A, two in Group B; P < 0.05), a greater degree of motor block (P < 0.05), and a higher incidence of sedation (nine parturients in Group A were sedated, one in Group B; P < 0.01). Group B had higher pain scores for the first 5 min (P < 0.05) and a lower level of sensory blockade (median of T7 in Group B compared with T4 in Group A; P < 0.01). We conclude that halving the total amount of i.t. 10 microg of sufentanil plus 2.5 mg of bupivacaine is a suitable option for CSE in labor because it reduces the incidence of some side effects, such as hypotension and maternal sedation, without compromising overall high maternal satisfaction. IMPLICATIONS: We showed that adequate labor pain relief could be provided by halving the recommended dose of 10 microg of intrathecal sufentanil plus 2.5 mg of bupivacaine. The larger dose, however, produced faster pain relief, which lasted longer than the reduced dose. The mother and baby were not adversely affected with either dose.
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