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Biomedical subjects

D G Moyes

Publications and source records attributed to D G Moyes.

At least 37 records · Page 2Linked to original sources
PubMed1986

Comparison of the effects of atropine and glycopyrrolate on pulmonary mechanics in patients undergoing fiberoptic bronchoscopy.

The effects of atropine and glycopyrrolate on forced vital capacity (FVC), forced expired volume in one second (FEV1), the FEV1/FVC ratio, and peak expiratory flow (PFL) were compared in 44 patients undergoing fiberoptic bronchoscopy under general anesthesia. Both anticholinergic agents improved pulmonary function equally before general anesthesia, but in both groups there was a small and again equal deterioration in pulmonary function after the procedure. The protective effects of the two drugs were not significantly different. Because of the lower incidence of undesirable side effects, glycopyrrolate is recommended as the anticholinergic agent of choice for bronchoscopy.

Atropine↗
PubMed1986

Anaesthetic scavenger evaluation in the laboratory.

A method of testing scavenging devices in isolation in a test box was developed. The rate of pollution in the box was measured with varying ventilating and suction conditions which allowed a leak index to be calculated so that the efficacy of commercially available scavengers could be compared to the system without a scavenger, and to each other. The BOC scavenger tested reduced pollution but was less efficient at low suction rates. For this scavenger the suction rate should be greater than 20 litre min-1.

Air Pollutants, Occupational↗
PubMed1985

Anaphylaxis due to suxamethonium? A case report.

A case of profound cardiovascular collapse after the administration of Althesin (alphaxalone-alphadolone) and suxamethonium is described. During subsequent anaesthesia in the same patient, cardiovascular collapse followed the administration of thiopentone and suxamethonium. It is concluded that suxamethonium, rather than Althesin, was the provocative agent.

Adult↗
PubMed1985

Mismatched blood transfusion. A case report.

Blood transfusion reactions due to mismatching are fortunately very rare. A case of a patient being given incompatible blood to correct postoperative anaemia is reported and the management discussed.

ABO Blood-Group System↗
PubMed1985

The use of the Samson modification of the Mapleson 'A' circuit during blind nasal intubation for anaesthesia.

A technique of blind nasal intubation for anaesthesia using the Samson modification of the Mapleson 'A' circuit is described. Adequate depth of anaesthesia is maintained by continuous insufflation, and scavenging is continuously used to remove waste anaesthetic gases. The position of the tube in relation to the larynx is estimated by movement of the reservoir bag and intermittent condensation of expired water vapour in the clear plastic of the circuit.

Anesthesia, Endotracheal↗
PubMed1985

Etomidate infusion for neuro-anaesthesia. A case report.

The successful administration of an etomidate infusion as a supplement to droperidol, fentanyl, muscle relaxant, air and oxygen anaesthesia in an 8-hour neurosurgical procedure is described. The merits of this technique are discussed, with particular emphasis on the conduct of anaesthesia in a patient with raised intracranial pressure.

Adolescent↗
PubMed1985

Normovolaemic haemodilution using dextran 70 in thoracic surgery.

Normovolaemic haemodilution was undertaken in 10 patients requiring elective thoracic surgery. The resultant blood loss, cell loss, use of donor blood and acid-base changes were compared with those in 10 patients undergoing similar procedures who were anaesthetized in the standard manner. Normovolaemic haemodilution reduces the use of donor blood and provides more satisfactory acid-base status than that in controls. The known antithrombotic effect of dextran 70 (Macrodex; Saphar) did not affect the crude clotting time. The technique is a feasible alternative to use of donor blood, especially when difficulties in supply exist or there is a high risk of disease transmission.

Adolescent↗
PubMed1985

Ventilation monitors and alarms.

In this review we present a proposed classification of the various types of ventilation monitors and failure alarms used in anaesthetic practice. Each monitoring method is then discussed individually and the advantages and disadvantages are evaluated.

Anesthesia↗
PubMed1984

Nitrous oxide sedation in dentistry. A comparison between Rotameter settings, pharyngeal concentrations and blood levels of nitrous oxide.

Nitrous oxide concentrations (V/V) at the delivery Rotameters block, nasal mask, pharynx and venous blood, were compared. There was a dilution of approximately 50% of the delivered nitrous oxide at the nasal mask which was further reduced in the pharynx. Venous blood concentrations 10 minutes after inhalation of nitrous oxide were low but as would be calculated from pharyngeal concentrations. After 5 minutes of oxygenation venous blood nitrous oxide concentrations were still relatively high. A total of 92% of subjects experienced a satisfactory effect with 30% nitrous oxide or less in the pharynx.

Adult↗
PubMed1983

A system of differential delivery pressures and hose diameters for use in hospital medical gas installations.

Medical gases can be identified simply if they are supplied at different pipeline pressures. Routine maintenance errors, accidental pipeline cross-connections, or gas failures, can be automatically detected by incorporating a pneumatic unit with pressure-sensitive valves into the anaesthetic machine. A fail-safe method of ensuring the delivery of the correct gases to the patient is described.

Anesthesia, Inhalation↗
PubMed1981

An evaluation of the Samson and Magill (Mapleson A) circuits during anaesthesia.

The valveless scavenging circuit of Samson was compared with a standard Magill (Mapleson A) circuit. Replacement of the scavenging unit of the Samson circuit by the Heidbrink valve of the Magill circuit at a given fresh gas flow rate allowed each patient to act as his own control. The minimum and maximum carbon dioxide levels were estimated at varying fresh gas flows related to the body weight of the patient. The carbon dioxide elimination of the two circuits showed no statistical difference and it is concluded that the Samson circuit requires fresh gas flows similar to the Magill circuit. The Samson circuit scavenged adequately during spontaneous breathing, manual ventilation and even when using the emergency oxygen bypass.

Adult↗