• D Mignonsin, A Diallo, M Kane, S Coffi, and A Bondurand.
• Département d'anesthésie-réanimation, Centre hospitalier et universitaire Cocody, Abidjan.
• Agressologie. 1990 Jan 1; 31 (7): 451-4.

AbstractSo as to determine the effects of adrenaline and clonidine on the duration of isobaric bupivacaine spinal anaesthesia, a prospective controlled study was carried out on 20 ASA I or II patients. They were randomly allocated to two groups. The patients of group I were given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 0.2 mg adrenaline. The patients of group II were given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 0.15 mg clonidine. The segmental level of sensory loss was tested using forceps. The time course required for maximal spread on the sensory blockade did not differ in the two groups: 4.00 +/- 1.01 min. for group I and 3.60 +/- 0.90 min. for group II. No difference was observed between median highest levels of sensory analgesia. Regression times were 520.70 +/- 79.52 min for group II and 360.40 +/- 51.47 min. for group I. Significant prolongation of motor block was also associated with the addition of vasoconstrictors. It is concluded that addition of 0.15 mg clonidine may be useful to increase duration of isobaric bupivacaine spinal anaesthesia.

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