الفهرس 
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Abstract
Patients were allocated into 3 groups of 12 patients each receiving 1.5 ml (11.25 mg) or 2 ml (15 mg) or 2.5 ml (18.75 mg) of 0.75% isobaric ropivacaine then, each group was subdivided into 2 subgroups according to addition of 20 µg fentanyl or not.
Criteria of sympathetic blockade (heart rate, mean blood pressure every 15 min and time to void), sensory blockade (peak sensory level every 15 min, time to peak sensory level and time to 2-segment regression) and motor blockade (maximum motor blockade every 15 min, time to maximum motor blockade, time to regression to modified Bromage scale 6 and time to walk) were recorded. Adequacy of analgesia and incidence of adverse effects were also assessed and recorded.
Our study clearly demonstrated that intrathecal ropivacaine provided surgical anesthesia of good quality for abdominal hernia repair at a dose of 11.25 mg (1.5m1 of 0.75% solution). However, increasing the dose above that, intensified sensory blockade, improved the quality of analgesia without hemodynamic derangements but this was on the expense of increasing the degree of motor blockade and delaying ambulation and micturition.
Our study also, proved that addition of 20 µg fentanyl to intrathecal ropivacaine improved the quality of analgesia intraopratively and prolonged its duration postoperatively without adverse effects on sympathetic or motor blockade.