Long Qt Syndrome

Minimally invasive VATS-LCSD helps children with refractory ventricular arrhythmias

Inherited ventricular arrhythmias are an important cause of morbidity and sudden cardiac death in children who have structurally normal hearts. Despite conventional medical therapy, some of these children remain symptomatic ...

Cardiology created May 07, 2013 | popularity not rated yet | comments 0

Mayo Clinic creates institution-wide electronic prolonged QT interval warning system

Using a one-of-a-kind computer-aided program, Mayo Clinic has developed and implemented a Mayo-wide electronic warning system to identify patients at risk of QT-related deaths from an abnormality in the heart's electrical ...

Cardiology created Apr 25, 2013 | popularity not rated yet | comments 0

International research finds heart disorder genetic variants in stillbirth cases

In a molecular genetic evaluation involving 91 cases of intrauterine fetal death, mutations associated with susceptibility to long QT syndrome (LQTS; a heart disorder that increases the risk for an irregular heartbeat and ...

Genetics created Apr 09, 2013 | popularity not rated yet | comments 0 | with audio podcast

'Clinical trials in a dish' may be more reliable than standard way of measuring drug effects on heart, researchers say

(Medical Xpress)—Last week, the common antibiotic Zithromax received a new warning label from the U.S. Food and Drug Administration indicating it could cause dangerous arrhythmias in people with pre-existing heart conditions. ...

Medical research created Mar 22, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Energy drinks may increase blood pressure, disturb heart rhythm

Energy drinks may increase blood pressure and disturb your heart's natural rhythm, according to research presented at the American Heart Association's Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism ...

Cardiology created Mar 21, 2013 | popularity 4 / 5 (1) | comments 0

Calcium-binding protein mutations found in heart rhythm disorders

A team led by Vanderbilt University investigators has discovered two new genes – both coding for the signaling protein calmodulin – associated with severe early-onset disorders of heart rhythm. The findings, reported ...

Cardiology created Feb 06, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Genes provide clues to gender disparity in human hearts

Healthy men and women show little difference in their hearts, except for small electrocardiographic disparities. But new genetic differences found by Washington University in St. Louis researchers in hearts with disease could ...

Cardiology created Jan 24, 2013 | popularity not rated yet | comments 0 | with audio podcast

Researchers use iPSCs to define optimal treatment for managing life-threatening arrhythmias

Researchers used induced pluripotent stem cells (iPSCs) derived from a young patient with Long QT syndrome (LQTS), a congenital heart disorder, to determine a course of treatment that helped manage the patient's ...

Cardiology created Jan 11, 2013 | popularity not rated yet | comments 0

Predicting risk of arrhythmias and sudden cardiac death: Virtual hearts help understand real-world patients

A computer model of the heart wall predicted risk of irregular heart rhythms and sudden cardiac death in patients, paving the way for the use of more complex cardiac models to calculate the consequences of ...

Cardiology created Dec 13, 2012 | popularity 2 / 5 (1) | comments 0

Researchers develop world's first human heart cell model

Researchers at the National Heart Centre Singapore (NHCS) have successfully created a human heart cell model of arrhythmogenic right ventricular cardiomyopathy (ARVC), an inherited heart muscle disorder which puts one at ...

Medical research created Oct 25, 2012 | popularity not rated yet | comments 0 | with audio podcast

Fluorescent protein helps scientists with heart, stem cell research

(Medical Xpress)—A fluorescent protein from a deep-sea jellyfish has helped scientists isolate heart cells in the laboratory, creating an invaluable aid to work on heart disease treatments and extraordinary ...

Medical research created Sep 24, 2012 | popularity not rated yet | comments 0

Electrical storm is a potent risk factor for mortality and morbidity

Electrical storm (ES) is a potent risk factor for mortality and morbidity, according to research presented today, August 26, at the ESC Congress 2012 by Dr Federico Guerra from Italy. Data was also presented on which patients ...

Cardiology created Aug 27, 2012 | popularity not rated yet | comments 0

ECG is a cost effective method for diagnosing cardiac abnormalities in young athletes

Cardiovascular screening with ECG in young athletes is a cost effective way of diagnosing cardiac abnormalities, at just 138 Swiss Francs (about €115) per athlete. The findings were presented today, August 26, at the ESC ...

Cardiology created Aug 27, 2012 | popularity not rated yet | comments 0

New drug shows promise for long QT syndrome

(Medical Xpress) -- Johns Hopkins researchers have discovered a new drug that may be useful in treating a heart rhythm condition called long QT syndrome. The study was published online on June 28 in the Early ...

Diseases, Conditions, Syndromes created Aug 01, 2012 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Sports guidelines for long QT syndrome patients may be too strict, study finds

Participation in competitive sports by people with long QT syndrome -- a genetic abnormality in the heart's electrical system -- has been a matter of debate among physicians. Current guidelines disqualify most LQTS patients ...

Diseases, Conditions, Syndromes created Jul 24, 2012 | popularity not rated yet | comments 0 | with audio podcast


The long QT syndrome (LQTS) is a rare inborn heart condition in which delayed repolarization of the heart following a heartbeat increases the risk of episodes of torsade de pointes (TDP, a form of irregular heartbeat that originates from the ventricles). These episodes may lead to palpitations, fainting and sudden death due to ventricular fibrillation. Episodes may be provoked by various stimuli, depending on the subtype of the condition.

The condition is so named because of the appearances of the electrocardiogram (ECG/EKG), on which there is prolongation of the QT interval. In some individuals the QT prolongation occurs only after the administration of certain medications.

This text uses material from Wikipedia and is available under the GNU Free Documentation License.

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