The administration of an epidural infusion of Hartmann's solution for 24 hours after delivery, in patients who have accidentally received a dural tap, is described. Eleven of sixteen patients so treated had no postpuncture headache; five (two with a double tap) had mild headache lasting for 3 days; and two—one who received a drip for only 18 hours and the other whose drip was not started until 12 hours after delivery—had severe postural headache for 3 days.