Long QT Syndrome history and symptoms: Difference between revisions
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* Persons who are first degree relatives of people with know long QT syndrome. | * Persons who are first degree relatives of people with know long QT syndrome. | ||
*[[Fainting]] - fainting or [[syncope]] is the most common symptom in persons with long QT syndrome. The fainting can occur spontaneously without warning, or in response to certain stressors such as emotional stress, exercise, excitement or loud noises. Often when people are about to faint, they may experience [[lightheadedness]], heart [[palpitations]], [[blurred vision]] or [[weakness]]. | *[[Fainting]] - fainting or [[syncope]] is the most common symptom in persons with long QT syndrome. The fainting can occur spontaneously without warning, or in response to certain stressors such as emotional stress, exercise, excitement or loud noises. Often when people are about to faint, they may experience [[lightheadedness]], heart [[palpitations]], [[blurred vision]] or [[weakness]]. | ||
*[[Seizures]] - if the heart continues to beat abnormally, the brain can become deprived of [[oxygen]], which can then cause seizures. | *[[Seizures]] - if the heart continues to beat abnormally, the brain can become deprived of [[oxygen]], which can then cause seizures. | ||
Revision as of 16:37, 3 April 2020
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Overview
More than 2 fainting episodes within 2 years should trigger an EKG evaluation for Long QT Syndrome.
History and Symptoms
You should inquire about the following as part of the thistory:
- Persons with a history of repeated fainting episodes or syncope. If there are more than 2 fainting spells in under 2 years, the risk of an aborted SCD or SCD is increased 18 fold.[1]
- Repeated blackouts or fainting spells in the context of the following are due to a malignant arrhythmia until proven otherwise:
- Exertion
- Loud startling noise
- Postpartum syncope
- Seizures
- A prior history of cardiac arrest.
- Family members of persons with repeated fainting, accidents, seizures or a history of cardiac arrest.
- Persons who are on certain medications that are known to cause a prolonged QT interval on electrocardiogram.
- Persons who are first degree relatives of people with know long QT syndrome.
- Fainting - fainting or syncope is the most common symptom in persons with long QT syndrome. The fainting can occur spontaneously without warning, or in response to certain stressors such as emotional stress, exercise, excitement or loud noises. Often when people are about to faint, they may experience lightheadedness, heart palpitations, blurred vision or weakness.
- Seizures - if the heart continues to beat abnormally, the brain can become deprived of oxygen, which can then cause seizures.
- Sudden death - in some circumstances a fatal arrhytmia that is not quickly intervened on, may cause sudden death.
References
- ↑ Hobbs et al. JAMA 296:1249-1254, 2006.