Levinson, G Maternal and foetal cardiovascular and acid-base changes during ketamine anaesthesia in pregnant ewes. [electronic resource] - British journal of anaesthesia Nov 1973 - 1111-5 p. digital Publication Type: Journal Article ISSN: 0007-0912 Standard No.: 10.1093/bja/45.11.1111 doi Subjects--Topical Terms: Acid-Base Equilibrium--drug effectsAnesthesia, SpinalAnimalsBlood Flow VelocityBlood Pressure--drug effectsCarbon Dioxide--bloodFemaleFetus--drug effectsHeart Rate--drug effectsHydrogen-Ion ConcentrationInjections, IntravenousKetamine--pharmacologyPregnancySheepStimulation, ChemicalUterus--blood supply