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he pressure exerted by head bandages at the operation site following ear surgery was measured using a balloon catheter and pressure transducer. The initial pressures achieved, their diminution with time and the relationship of pressure to the induction of headache in the patient were studied.The principal findings were that the standard otological head bandage is rarely tight enough to prevent haematoma formation, bandages have lost their efficacy after the first hour and headaches are associated with a significantly higher initial bandage pressure.

Oesophageal function appears to be altered by tracheoesophageal fistula speech. However, our study showed that there is no contraindication to proceeding with tracheoesophageal fistula voicing even in patients with a history of oesophageal dysfunction.

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Plastic retrieval systems were less likely to burst than fabric systems when subjected to simulated retrieval, and required less force for withdrawal. Plastic systems may therefore be associated with less tumour seeding or gallstone spillage as a consequence of bag disruption.

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