BlumgartCH, RyallD, DennisonB, Thompson-HillLM.Mechanism of extension of spinal anaesthesia by extradural injection of local anaesthetic. British Journal of Anaesthesia1992; 69:457–460.
2.
UsubiagaJE, UsubiagaLE, BreaLM, GoyenaR.Effect of saline injections on epidural and subarachnoid space pressures and relation to postspinal anesthesia headache. Anesthesia and Analgesia Current Researches1967; 46:293–296.
3.
HiltH, GrammH-J, LinkJ.Changes in intracranial pressure associated with extradural anaesthesia. British Journal of Anaesthesia1986; 58:676–680.
4.
GalbertMW, MarxGF.Extradural pressures in the parturient patient. Anesthesiology1974; 40:499–502.
5.
HopkinsEL, HendricksCH, CibilsLA.Cerebrospinal fluid pressure in labour. American Journal of Obstetrics and Gynecology1965; 93:907–916.
6.
UelandK, HansenJM.Maternal cardiovascular dynamics III. Labor and delivery under local and caudal analgesia. American Journal of Obstetrics and Gynecology1969; 103:8–18.
7.
MarxGF, OkaY, OrkinLR.Cerebrospinal fluid pressures during labor. American Journal of Obstetrics and Gynecology1962; 84:213–219.
8.
RichardsAM, MoodleyJ, GrahamDI, BullockMRR.Active management of the unconscious eclamptic patient. British Journal of Obstetrics and Gynaecology1986; 93:554–562.
9.
FlynnRJ, MooreJ, CollierPS, HowardPJ.Effect of intravenous cimetidine on lignocaine disposition during extradural Caesarean section. Anaesthesia1989; 44:739–741.