John A Gamble

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The relative efficacy of diazepam 10 mg as a premedicant was assessed following its oral and intramuscular administration, using a "double-blind, double-dummy" technique, as well as its effect when given by both routes. Drugs were given to a standard patient population who were undergoing the same type of operation and receiving a standard anaesthetic. The(More)
Thirty patients who had undergone elective abdominal aortic surgery were studied in a prospective, randomised double-blind comparison of thoracic epidural 0.2% bupivacaine alone, thoracic epidural fentanyl alone and thoracic epidural 0.2% bupivacaine combined with fentanyl. Pain relief, pulmonary function, cardiovascular stability and side effects were(More)
Ephrin signaling is involved in repulsive and attractive interactions mediating axon guidance and cell-boundary formation in the developing nervous system. As a result of a fortuitous transgene integration event, we have identified here a potential role for EphA5 in the axophilic migration of gonadotropin-releasing hormone (GnRH) neurons from the nasal(More)
A 10 mg dose of diazepam was given intravenously to mothers at 15 to 205 minutes before delivery, and plasma diazepam concentrations were measured by gas-liquid chromatography in mothers and infants at delivery and again 24 hours later. The plasma levels in the infants were always significantly higher than in the mothers but there was no evidence to suggest(More)
Plasma diazepam levels were estimated by gas-liquid chromatography following a single 10 mg dose administered to a health adult female population by the oral and intramuscular routes. The highest levels were achieved following oral administration, reaching a peak at 60 minutes, although injection into the thigh resulted in a more rapid rise initially.(More)
Midazolam, a new water-soluble benzodiazepine, was investigated as an intravenous anaesthetic agent in 260 adult patients in doses ranging from 0.15 to 0.5 mg/kg using a variety of premedications. Its onset of action was generally slow, taking up to 3 minutes to exert its maximum effect. A wide variability in response was found in that some unpremedicated(More)
Plasma diazepam can be reliably estimated using a simple benzene extraction and gas-liquid chromatography with griseofulvin as internal standard. This gives reproducible results within the clinical range of plasma levels. Storage at minus 20 degrees C is recommended but is not essential for the 1st week.
Plasma diazepam concentrations were measured by gas-liquid chromatography in samples of blood from adult female patients follwing diazepam 10 mg orally, alone or in combination with metoclopramide, morphine, pethidine or atropine. Patients receiving metoclopramide had higher plasma diazepam concentrations than those in the control group, while the addition(More)