In a previous communication1 the methods and indications for continuous spinal anesthesia were described and the fundamental premises of a method (malleable needle technic) originally suggested by Lemmon2 emphasized. At this time there should be little doubt that the fractional or serial administration of spinal anesthetic agents is safer relatively than single large dose administration—so-called "single shot spinal." However, in certain instances it is not always practical to utilize continuous spinal anesthesia because one is administering a small initial dose of the spinal anesthetic and one does not contemplate or desire to inject any more of the anesthetic; for example, for hemorrhoidectomy or transurethral prostatic resection. Thus, certain surgical procedures do not lend themselves as practical for utilizing continuous spinal anesthesia regardless of the technic employed.
The continuous spinal method is indicated usually and advantageously in such surgical operations as bilateral primary inguinal herniorrhaphy, operations for recurrent hernias
TUOHY EB. THE USE OF CONTINUOUS SPINAL ANESTHESIA: UTILIZING THE URETERAL CATHETER TECHNIC. JAMA. 1945;128(4):262–264. doi:10.1001/jama.1945.02860210018004
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