Torsades de pointes causes: Difference between revisions

Jump to navigation Jump to search
Charmaine Patel (talk | contribs)
Kiran Singh (talk | contribs)
 
(10 intermediate revisions by 5 users not shown)
Line 5: Line 5:
==Overview==
==Overview==


Common causes for torsades de pointes include [[hypomagnesemia]] and [[hypokalemia]]. It is commonly seen in malnourished individuals and chronic [[alcoholism|alcoholics]]. Drug interactions such as erythromycin or Avelox, taken concomitantly with inhibitors like nitroimidazole, [[diarrhea]], dietary supplements, and various medications like [[methadone]], [[lithium]], [[tricyclic antidepressants]] or [[phenothiazines]] may also contribute.
Common causes for torsades de pointes include [[hypomagnesemia]] and [[hypokalemia]]. It is commonly seen in malnourished individuals and chronic [[alcoholism|alcoholics]]. Drug interactions such as [[erythromycin]] or Avelox, taken concomitantly with inhibitors like [[nitroimidazole]], [[diarrhea]], dietary supplements, and various medications like [[methadone]], [[lithium]], [[tricyclic antidepressants]] or [[phenothiazines]] may also contribute to causing torsades de pointes.
 
Long QT syndrome can either be inherited as congenital mutations of ion channels carrying the cardiac impulse/action potential or acquired as a result of drugs that block these cardiac ion currents.


==Causes==
==Causes==
Line 23: Line 21:
* [[Chlorpromazine ]]
* [[Chlorpromazine ]]
* [[Cisapride ]]
* [[Cisapride ]]
*[[Citalopram]]
* Citalopram
* [[Clarithromycin ]]
* [[Clarithromycin ]]
* [[Disopyramide ]]
* [[Disopyramide ]]
* [[Dofetilide ]]
* [[Dofetilide ]]
* [[Dolasetron mesylate]]
* [[Domperidone ]]
* [[Domperidone ]]
* [[Droperidol ]]
* [[Droperidol ]]
* [[Erythromycin ]]
* [[Erythromycin ]]
* [[Felbamate]]
* [[Halofantrine ]]
* [[Halofantrine ]]
* [[Haloperidol ]]
* [[Haloperidol ]]
* [[Clozapine]]
* [[Ibutilide ]]
* [[Ibutilide ]]
* [[Levomethadyl ]]
* [[Levomethadyl ]]
Line 47: Line 48:
* [[Terfenadine ]]
* [[Terfenadine ]]
* [[Thioridazine]]
* [[Thioridazine]]
* [[Toremifene]]
* [[Vandetanib]]
* [[Vandetanib]]


Line 102: Line 104:
* [[Vardenafil ]]
* [[Vardenafil ]]
* [[Venlafaxine ]]
* [[Venlafaxine ]]
* [[vandetanib]]
* [[Voriconazole ]]
* [[Voriconazole ]]
* [[Ziprasidone]]
* [[Ziprasidone]]
Line 134: Line 137:
* [[Trimethoprim-Sulfamethoxazole]]
* [[Trimethoprim-Sulfamethoxazole]]
* [[Trimipramine]]
* [[Trimipramine]]
==Sources==
http://www.qtdrugs.org/


==References==
==References==

Latest revision as of 20:38, 16 February 2015

Torsades de pointes Microchapters

Home

Patient Information

Overview

Historical Perspective

Pathophysiology

Causes

Differentiating Torsades de pointes from other Diseases

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

EKG Examples

Echocardiography

Other Diagnostic Studies

Treatment

Medical Therapy

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Torsades de pointes causes On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Torsades de pointes causes

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Torsades de pointes causes

CDC on Torsades de pointes causes

Torsades de pointes causes in the news

Blogs on Torsades de pointes causes

Directions to Hospitals Treating Torsades de pointes

Risk calculators and risk factors for Torsades de pointes causes

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Common causes for torsades de pointes include hypomagnesemia and hypokalemia. It is commonly seen in malnourished individuals and chronic alcoholics. Drug interactions such as erythromycin or Avelox, taken concomitantly with inhibitors like nitroimidazole, diarrhea, dietary supplements, and various medications like methadone, lithium, tricyclic antidepressants or phenothiazines may also contribute to causing torsades de pointes.

Causes

The List of Drugs that Cause Torsades de pointes

Drugs that are generally accepted to have a risk of causing torsades de pointes:

Drugs that Possibly Cause Torsades de pointes

Drugs that in some reports have been associated with torsades de pointes and/or QT prolongation but at this time lack substantial evidence for causing torsades de pointes.

The List of Drugs that Cause Torsades de pointes in Certain Conditions

Drugs that, in some reports, have been weakly associated with torsades de pointes and/or QT prolongation but that are unlikely to be a risk for torsades de pointes when used in usual recommended dosages and in patients without other risk factors (e.g., concomitant QT prolonging drugs, bradycardia, electrolyte disturbances, congenital long QT syndrome, concomitant drugs that inhibit metabolism)

Sources

http://www.qtdrugs.org/

References