title: The effect of lithotomy position on arterial blood pressure after spinal anesthesia.
abstract: We compared the effect of the lithotomy position on the systolic blood pressure (SBP) with the horizontal position after spinal block. The lithotomy position was performed 5 min after spinal block. The change in SBP was expressed as percent of depression from the baseline value. The SBP increased by the lithotomy position (n = 14) from a 16% decrease to an 8% decrease. On the contrary, in the horizontal group (n = 14), SBP decreased 16% at 5 min and continued to decrease to 21%. The extent of the cephalad spread of analgesia 20 min after spinal block was same between the two groups (T-5 +/- 2 vs T-5 +/- 2, respectively). From these results we conclude that the lithotomy position after spinal anesthesia attenuates the decrease in arterial blood pressure and does not affect the cephalad spread of analgesia.
authors.affiliation: Department of Anesthesia, Kushiro General City Hospital, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Miyabe
authors.forename: H
authors.initials: H
authors.lastname: Sonoda
authors.forename: A
authors.initials: A
authors.lastname: Namiki
mesh_terms: D000328:Adult; D000698:Analgesia; D000775:Anesthesia, Spinal; D001794:Blood Pressure / Q000502:physiology*; D005260:Female; D006801:Humans; D007022:Hypotension / Q000503:physiopathology; D007044:Hysterectomy; D007552:Isotonic Solutions / Q000008:administration & dosage; D008875:Middle Aged; D009407:Nerve Block; D011187:Posture / Q000502:physiology*; D000077325:Ringer's Lactate; D013129:Spinal Puncture; D016683:Supine Position / Q000502:physiology; D013599:Systole; D013748:Tetracaine / Q000008:administration & dosage
chemical_list: D007552:Isotonic Solutions; D000077325:Ringer's Lactate; D013748:Tetracaine