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Biomedical subjects

D J Rowbotham

Publications and source records attributed to D J Rowbotham.

81 records · Page 5Linked to original sources

Effect of prior administration of cold saline on pain during propofol injection. A comparison with cold propofol and propofol with lignocaine.

A single-blind, randomised, controlled study was undertaken to compare the efficacy of three methods of preventing pain during injection of propofol on induction of anaesthesia. Patients were allocated randomly to receive unmodified propofol, propofol with 0.05% lignocaine, propofol at 4 degrees C and unmodified propofol preceded by 10 ml of 0.9% saline at 4 degrees C. Prior injection of cold saline reduced the incidence of pain and discomfort significantly (22%) compared with unmodified propofol (75%; p less than 0.005) and was similar to that after cold propofol (33%) and propofol with lignocaine (44%). There was no significant difference between the treatment groups.

Adult↗

Transdermal fentanyl for the relief of pain after upper abdominal surgery.

Transdermal fentanyl (n = 22) was compared with placebo (n = 18) in a double-blind study of pain after upper abdominal surgery. All patients also received i.v. morphine on demand for supplementary analgesia. The transdermal systems were applied 2 h before induction of anaesthesia and remained in situ for 24 h. After operation, pain scores were significantly lower and peak expiratory flow rates significantly higher in the transdermal fentanyl group, who demanded significantly less morphine than the control group. Mean plasma fentanyl concentrations at 12 and 24 h were within the therapeutic range (1.5 and 2.0 ng ml-1, respectively).

Abdomen↗

A disposable device for patient-controlled analgesia with fentanyl.

A disposable nonelectronic patient-controlled analgesia device was used to deliver fentanyl after upper abdominal surgery. Pain relief was satisfactory and plasma fentanyl concentrations were similar to those obtained by other workers who used electronic patient-controlled analgesia devices.

Disposable Equipment↗

Hypoxaemia during outpatient dental anaesthesia.

Eighty children, ASA grade 1, who had outpatient general anaesthesia for tooth extraction were studied. An inhalational induction was performed, with patients receiving halothane, nitrous oxide and either 33% or 50% oxygen. Oxygen saturation was measured throughout the procedure using the Ohmeda Biox 3700 pulse oximeter. No significant difference in the incidence of hypoxaemia was found between the two groups. There was no association between the grade of surgeon or anaesthetist and the incidence of hypoxaemia.

Ambulatory Surgical Procedures↗

Plasma fentanyl concentrations during transdermal delivery of fentanyl to surgical patients.

Plasma fentanyl concentrations were measured during and after transdermal fentanyl delivery in groups of patients undergoing general surgery. At 8 and 12 h, concentrations did not differ from those observed in a matched group of patients receiving fentanyl by i.v. infusion. At 24 h, concentrations were significantly lower in one of the transdermal groups. Plasma fentanyl clearance did not differ significantly between the groups. Plasma fentanyl concentrations decreased slowly after removal of the transdermal system.

Abdomen↗

Comparison of the effect of cisapride and metoclopramide on morphine-induced delay in gastric emptying.

1. The effects of metoclopramide or cisapride on morphine-induced delay in gastric emptying in patients before surgery were compared. 2. Forty patients were allocated randomly to receive one of four premedications i.m.: placebo only, morphine 10 mg alone, morphine 10 mg with metoclopramide 10 mg and morphine 10 mg with cisapride 10 mg. Gastric emptying after each premedication was assessed indirectly from the rate of absorption of oral paracetamol. 3. Cisapride 10 mg reversed the delay in gastric emptying due to morphine. Its effects were significantly greater than those of metoclopramide 10 mg.

Acetaminophen↗

Effect of cisapride on morphine-induced delay in gastric emptying.

Forty patients were allocated randomly to receive one of four premedications i.m.: placebo only, morphine 10 mg plus placebo, morphine 10 mg plus cisapride 10 mg and morphine 10 mg plus cisapride 4 mg. Gastric emptying after each premedication was assessed using the oral paracetamol absorption model. The morphine only group and the morphine and cisapride 4 mg group showed delayed gastric emptying when compared with the placebo group. Delay in gastric emptying in the morphine and cisapride 10 mg group was not demonstrated. It is concluded that cisapride 10 mg prevents the delay in gastric emptying associated with the administration of morphine.

Acetaminophen↗