Long QT syndrome speeds up heartbeats, and can cause fainting.

QT间期延长综合症会加速心跳，导致昏厥。

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Objective To explore SCN5A gene mutations in Chinese patients with congenital long QT syndrome type 3 (LQT3).

目的研究中国人遗传性长QT综合征3型（LQT3）相关基因SCN5A突变情况。

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Objective To study the clinical manifestations and gene mutations of Chinese long QT syndrome (LQTS) patients.

目的研究我国长qt综合征(LQTS)病人的临床特征和基因突变特点。

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The concern from the FDA is over a heart rhythm abnormality called long QT syndrome.

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Lengthening the QT interval can raise the risk of sudden cardiac death, especially in people who have a genetic condition called long QT syndrome.

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To assess how common a problem long QT linked to SSRI use might be, US researchers decided to look at the medical records of more than 38, 00 patients from New England.

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