{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T21:07:16Z","timestamp":1760044036476,"version":"3.40.4"},"reference-count":17,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2014,3,12]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>A 12-year-old girl presented with an acute confusional state and a 2-year history of weight loss, anxiety, agitation and recurrent fever. Thyroid function tests confirmed severe hyperthyroidism, and a diagnosis of thyroid storm was made (Burch and Wartofsky score=75). ECG showed a prolonged QTc interval of 506\u2005ms. Acute treatment for thyroid storm consisted of Lugol's iodine, prednisolone, carbimazole and propranolol. She made a steady recovery and by 3\u2005months her thyroid function had normalised; a repeat ECG showed a QTc within the normal range (430\u2005ms). There was no relevant family history. This is a case of QTc prolongation with hyperthyroidism and normalisation with euthyroidism. It is not commonly recognised that hyperthyroidism in children may be associated with QTc prolongation. QTc measurement should be incorporated into management protocols for hyperthyroidism.<\/jats:p>","DOI":"10.1136\/bcr-2013-202595","type":"journal-article","created":{"date-parts":[[2014,4,12]],"date-time":"2014-04-12T11:18:05Z","timestamp":1397301485000},"page":"bcr2013202595","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":9,"title":["QT prolongation in a child with thyroid storm"],"prefix":"10.1136","volume":"2014","author":[{"given":"Benjamin B","family":"Albert","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luke Gerard","family":"Eckersley","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonathan Robert","family":"Skinner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Craig","family":"Jefferies","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2014,4,12]]},"reference":[{"key":"2025042703202856000_2014.apr12_1.bcr2013202595.1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2008.02.068"},{"key":"2025042703202856000_2014.apr12_1.bcr2013202595.2","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9343(01)01011-7"},{"key":"2025042703202856000_2014.apr12_1.bcr2013202595.3","doi-asserted-by":"publisher","DOI":"10.1136\/heart.89.11.1363"},{"key":"2025042703202856000_2014.apr12_1.bcr2013202595.4","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMra032426"},{"key":"2025042703202856000_2014.apr12_1.bcr2013202595.5","doi-asserted-by":"publisher","DOI":"10.1001\/jama.289.16.2120"},{"key":"2025042703202856000_2014.apr12_1.bcr2013202595.6","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1016\/S0889-8529(18)30165-8","article-title":"Life-threatening thyrotoxicosis. 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