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Unmasking of thyrotoxicosis during Anaesthesia
PC So
Department of Anaesthesiology, North District Hospital, 9 Po Kin
Road, Sheung Shui, New Territories, Hong Kong
Two cases of subclinical and undiagnosed thyrotoxicosis
that presented with unexplained tachycardia during surgery are described.
Differential diagnosis and logistics in the management of patients
presenting with tachycardia, with or without fever during anaesthesia
are discussed. It is emphasised that when encountering unexplained
tachycardia during anaesthesia, thyrotoxicosis must be suspected.
Investigations for thyrotoxicosis must be carried out in the postoperative
period.
Hong Kong Med J 2001;7:311-4
Key words: Preoperative care; Tachycardia/diagnosis;
Thyroid crisis/diagnosis; Thyrotoxicosis/diagnosis
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