Does subclinical hypothyroidism explain the increased susceptibility of women to torsades de pointes?
Among 20 consecutive patients (65% women) with drug-associated torsades de pointes, chemical evidence for hypothyroidism was found in only 10% of both women and men. Subclinical hypothyroidism is therefore unlikely to account for the consistently observed sex difference in the propensity to torsades de pointes.
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