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Biomedical subjects

P A Foster

Publications and source records attributed to P A Foster.

At least 55 records · Page 3Linked to original sources

The performance of a scavenging valve.

A simple, compact and lightweight device for coupling active scavenging systems to shrouded breathing system valves is described. Provided a scavenging minute flow rate greater than the expired gas volume is available, the unit can handle automatically changes in both variables. Optimal function is achieved with scavenging flows from about twice the discharged gas flow to about 50 litre min-1. At these flows the valve can accommodate the outflow of gas-driven ventilators where driving gas and circuit gas are discharged through the same port. There is no interference with expiratory valve function in the event of scavenging failure.

Air Pollution↗

Endotracheal intubation and head posture in infants.

The movement of an endotracheal tube relative to the carina has been studied with the head in different positions. The dangers of malposition and displacement are stressed. Some precautions necessary to avoid these hazards are given.

Bronchi↗

Examsmanship.

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Education, Medical↗

Adrenocorticotropic hormone infusion as a novel treatment for postdural puncture headache.

BACKGROUND AND OBJECTIVES: In two patients, one scheduled for epidural anesthesia and the other for placement of a spinal catheter for operative procedures, severe postdural puncture headache developed and was refractory to conservative therapy. METHODS: The first patient had several unintentional dural punctures, and the second underwent a planned dural puncture with an 18-gauge needle for insertion of a 20-gauge catheter. When neither patient responded to conservative therapy following development of postdural puncture headache, an infusion of adrenocorticotropic hormone (ACTH) was given prior to consideration of epidural blood patching. RESULTS: Both patients obtained complete and permanent relief from their headaches. CONCLUSION: A single treatment with ACTH may offer an alternative therapy in the treatment of postdural puncture headache.

Adrenocorticotropic Hormone↗