Long QT Syndrome history and symptoms: Difference between revisions

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Overview

Patients with long QT syndrome may have a positive history of family history of syncope, seizures, cardiac arrest or first-degree relatives with known long QT syndrome. Symptoms of long QT syndrome include lightheadedness, palpitations, syncope or presyncope or seizure.

History and Symptoms

History

Patients with long QT syndrome may have a positive history of:^[1]

Prior history of cardiac arrest
Family history of syncope, seizures or cardiac arrest
First-degree relatives with known long QT syndrome
Using certain medications causing prolonged QT interval

Common Symptoms

Common symptoms of long QT syndrome include:^[2]^[3]

Lightheadedness
Palpitations
Syncope or presyncope

Less common symptoms

Less common symptoms of long QT syndrome include:

References

↑ Horigome H, Nagashima M, Sumitomo N, Yoshinaga M, Ushinohama H, Iwamoto M, Shiono J, Ichihashi K, Hasegawa S, Yoshikawa T, Matsunaga T, Goto H, Waki K, Arima M, Takasugi H, Tanaka Y, Tauchi N, Ikoma M, Inamura N, Takahashi H, Shimizu W, Horie M (February 2010). "Clinical characteristics and genetic background of congenital long-QT syndrome diagnosed in fetal, neonatal, and infantile life: a nationwide questionnaire survey in Japan". Circ Arrhythm Electrophysiol. 3 (1): 10–7. doi:10.1161/CIRCEP.109.882159. PMID 19996378.
↑ Schwartz PJ, Crotti L, Insolia R (August 2012). "Long-QT syndrome: from genetics to management". Circ Arrhythm Electrophysiol. 5 (4): 868–77. doi:10.1161/CIRCEP.111.962019. PMC 3461497. PMID 22895603.
↑ Vincent GM (October 2002). "The long QT syndrome". Indian Pacing Electrophysiol J. 2 (4): 127–42. PMC 1557415. PMID 16951729.

[pmid19996378-1] Horigome H, Nagashima M, Sumitomo N, Yoshinaga M, Ushinohama H, Iwamoto M, Shiono J, Ichihashi K, Hasegawa S, Yoshikawa T, Matsunaga T, Goto H, Waki K, Arima M, Takasugi H, Tanaka Y, Tauchi N, Ikoma M, Inamura N, Takahashi H, Shimizu W, Horie M (February 2010). "Clinical characteristics and genetic background of congenital long-QT syndrome diagnosed in fetal, neonatal, and infantile life: a nationwide questionnaire survey in Japan". Circ Arrhythm Electrophysiol. 3 (1): 10–7. doi:10.1161/CIRCEP.109.882159. PMID 19996378.

[pmid22895603-2] Schwartz PJ, Crotti L, Insolia R (August 2012). "Long-QT syndrome: from genetics to management". Circ Arrhythm Electrophysiol. 5 (4): 868–77. doi:10.1161/CIRCEP.111.962019. PMC 3461497. PMID 22895603.

[pmid16951729-3] Vincent GM (October 2002). "The long QT syndrome". Indian Pacing Electrophysiol J. 2 (4): 127–42. PMC 1557415. PMID 16951729.

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[2]

[3]

@@ Line 4: / Line 4: @@
 ==Overview==
-More than 2 fainting episodes within 2 years should trigger an EKG evaluation for Long QT Syndrome.
+Patients with long QT syndrome may have a positive history of family history of syncope, [[seizures]], [[cardiac arrest]] or first-degree relatives with known long QT syndrome. Symptoms of long QT syndrome include [[lightheadedness]], [[palpitations]], syncope or presyncope or seizure.
 ==History and Symptoms==
-You should inquire about the following as part of the thistory:
+===History===
-* 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>
+Patients with long QT syndrome may have a positive history of:<ref name="pmid19996378">{{cite journal |vauthors=Horigome H, Nagashima M, Sumitomo N, Yoshinaga M, Ushinohama H, Iwamoto M, Shiono J, Ichihashi K, Hasegawa S, Yoshikawa T, Matsunaga T, Goto H, Waki K, Arima M, Takasugi H, Tanaka Y, Tauchi N, Ikoma M, Inamura N, Takahashi H, Shimizu W, Horie M |title=Clinical characteristics and genetic background of congenital long-QT syndrome diagnosed in fetal, neonatal, and infantile life: a nationwide questionnaire survey in Japan |journal=Circ Arrhythm Electrophysiol |volume=3 |issue=1 |pages=10–7 |date=February 2010 |pmid=19996378 |doi=10.1161/CIRCEP.109.882159 |url=}}</ref>
-*Repeated blackouts or fainting spells in the context of the following are due to a malignant arrhythmia until proven otherwise:
+*Prior history of [[cardiac arrest]]
-:*Exertion
+*Family history of syncope, [[seizures]] or [[cardiac arrest]]
-:*Loud startling noise
+*First-degree relatives with known long QT syndrome
-:*Postpartum syncope
+*Using certain medications causing prolonged QT interval
-:*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]].
+===Common Symptoms===
-*[[Seizures]] - if the heart continues to beat abnormally, the brain can become deprived of [[oxygen]], which can then cause seizures.
+Common symptoms of long QT syndrome include:<ref name="pmid22895603">{{cite journal |vauthors=Schwartz PJ, Crotti L, Insolia R |title=Long-QT syndrome: from genetics to management |journal=Circ Arrhythm Electrophysiol |volume=5 |issue=4 |pages=868–77 |date=August 2012 |pmid=22895603 |pmc=3461497 |doi=10.1161/CIRCEP.111.962019 |url=}}</ref><ref name="pmid16951729">{{cite journal |vauthors=Vincent GM |title=The long QT syndrome |journal=Indian Pacing Electrophysiol J |volume=2 |issue=4 |pages=127–42 |date=October 2002 |pmid=16951729 |pmc=1557415 |doi= |url=}}</ref>
-*[[Sudden death]] - in some circumstances a fatal [[arrhytmia]] that is not quickly intervened on, may cause sudden death.
+*[[Lightheadedness]]
+*[[Palpitations]]
+*Syncope or presyncope
+===Less common symptoms===
+Less common symptoms of long QT syndrome include:
+*[[Blurred vision]] or [[weakness]]
+*[[Seizures]]
+*[[Sudden death]]
 ==References==