Anaesthesia
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Case Reports
Giant false aneurysm of the subclavian artery. An unusual complication of internal jugular venous cannulation.
A false aneurysm with a diameter of 15 cm developed in the wall of the subclavian artery after attempted internal jugular cannulation. This potentially lethal complication, its diagnosis and treatment are described.
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A 28-year-old woman presented for emergency Caesarean section at 31 weeks' gestation with deranged liver function and a history of recurrent anaphylactoid reactions during previous pregnancy-related anaesthetics. The anaesthetic management and outcome of this case is presented.
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Migration of thoracic epidural catheters was evaluated in 25 patients by three methods either after placement of the catheter or immediately after surgery. The first method was the determination of the depth of the catheter from the skin, the second the determination of the level of sensory blockade which resulted from a test dose of a local anesthetic agent, while the third consisted of radiological visualisation of the catheter tip in the epidural space with radiopaque dye. ⋯ This inward movement was accompanied by a higher level of sensory blockade. No relationship with radiological visualisation was found.
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Thirteen critically ill patients received flumazenil after multiple doses, or an infusion, of midazolam was used as part of a sedation regimen to facilitate intensive care. All patients remained excessively sedated after the midazolam was stopped for 6 hours or longer. ⋯ The dose of flumazenil required each hour was less than estimated previously; this indicates that it may be subjected to similar alterations of elimination as those described for midazolam. Flumazenil appears to be a useful drug for the reversal of prolonged benzodiazepine sedation but repeated bolus doses or an infusion are needed if significant accumulation of benzodiazepines has occurred.
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Pregnancy-associated admissions to the Intensive Care Unit during the first 5 years of a newly established teaching hospital obstetric unit are reviewed. There were 23 such admissions; in the same period, 21,983 deliveries occurred. ⋯ Most patients required admission for less than 48 hours. Two patients died during the period of study.