Long QT Syndrome history and symptoms: Difference between revisions
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==History and Symptoms== | ==History and Symptoms== | ||
===History=== | |||
You should inquire about the following as part of the thistory: | 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.<ref>Hobbs et al. JAMA 296:1249-1254, 2006.</ref> | * 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.<ref>Hobbs et al. JAMA 296:1249-1254, 2006.</ref> | ||
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* Persons who are on certain medications that are known to cause a prolonged QT interval on electrocardiogram. | * 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. | * Persons who are first degree relatives of people with know long QT syndrome. | ||
Patients with long QT syndrome may have a positive history of: | |||
===Common Symptoms=== | |||
*[Lightheadedness]] | |||
*[[Palpitations]] | |||
*Syncope or presyncope | |||
*[[ | ===Less common symptoms=== | ||
*[[Seizures]] | *[[Blurred vision]] or [[weakness]] | ||
*[[Sudden death]] | *[[Seizures]] | ||
*[[Sudden death]] | |||
==References== | ==References== | ||
Revision as of 16:44, 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
History
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.
Patients with long QT syndrome may have a positive history of:
Common Symptoms
- [Lightheadedness]]
- Palpitations
- Syncope or presyncope
Less common symptoms
References
- ↑ Hobbs et al. JAMA 296:1249-1254, 2006.