• M Echevarría, F Caba, L Olmedo, A Cruz, J M Llamas, and R Rodríguez.
• Servicio de Anestesiología y Reanimación, Hospital Universitario Virgen de Valme, Sevilla.
• Rev Esp Anestesiol Reanim. 1994 Jul 1;41(4):217-20.

ObjectivesTo compare the incidence of postdural puncture headache after subarachnoid anesthesia with a 24G Sprotte needle among full-term obstetric patients as compared to non-obstetric patients.Patients And MethodsA total of 200 patients were studied prospectively, divided into 2 groups. Group 1 (n = 100) patients were delivered by cesarean section and group 2 (n = 100) patients underwent infraumbilical or traumatological surgery. All were ASA I-II and under 40 years of age. Hydration was accomplished with lactated Ringer's solution 400-1,000 ml before mid-line puncture. The anesthetic used in both groups was isobaric bupivacaine 0.5% with a vasoconstrictor. The incidence of arterial hypotension and accompanying symptoms was recorded; perioperative administration of vasoactive amines and anticholinergics and liquids administered was measured. Twenty-four to 48 hours later the patients were asked when they started walking and if postdural puncture headache was experienced.ResultsGroup 1 received smaller doses of bupivacaine (p < 0.05) and the incidence of arterial hypotension was greater (p < 0.01) and required increased administration of amines (p < 0.01) and perioperative fluid therapy (p < 0.001). No difference was found between the two groups either for time of start of ambulation or for incidence of headache, which was 1% in both groups.ConclusionsThe incidence of postdural puncture headache in obstetric patients is low and similar to that of non-obstetric patients when the 24G Sprotte needle is used.

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