A survey of the usage of caudal catheters amongst paediatric anaesthetists practising in the UK
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Journal Article↗
Biomedical subjects
J Challands
Publications and source records attributed to J Challands.
Rectus sheath block for diagnostic laparoscopy.
Sixty adult females of ASA grade 1 or 2 scheduled to undergo diagnostic laparoscopy were allocated randomly to one of two groups. In group A, laparoscopy was performed with a standardised general anaesthetic technique alone. In group B, the same general anaesthetic technique was supplemented with bilateral rectus sheath block. Postoperative analgesia was assessed at 1, 6 and 10 hours after operation. Visual analogue pain scores in group B were significantly lower than in group A despite a greater use of intramuscular analgesic injections in group A (p less than 0.005 in each case).
Abdominal Muscles↗
19F NMR studies of enflurane elimination and metabolism.
The elimination and metabolism of enflurane, a fluorinated ether anaesthetic, was studied by 19F NMR in vivo in both rat liver and brain as well as human body fluids. In the liver of thiobarbitone-anaesthetized rats the half-life for enflurane following exposure to 0.15% (v/v) for 30 min was 76 min but this could be decreased to 39 min by pretreatment of the animals with isoniazid (0.1% in the drinking water for 7 days), an agent known to enhance enflurane metabolism. In these animals the major organic metabolite difluoromethoxy difluoroacetate (DFMDFA) was also detected by 19F NMR in vivo. This metabolite was detected along with fluoride ion in rat and human urine and plasma by high resolution 19F NMR. Human urine also contained signals from a probable DFMDFA conjugate and unexpectedly from trifluoroacetate.
Adult↗