QT prolongation - Revision history

Danbot: Move calculators to own section with header (visible in TOC), expanded, before External Links

2026-03-21T15:07:49Z

Move calculators to own section with header (visible in TOC), expanded, before External Links

← Revisión anterior		Revisión del 15:07 21 mar 2026
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	*[[Hypomagnesemia]]		*[[Hypomagnesemia]]
	*[[Hypermagnesemia]]		*[[Hypermagnesemia]]

			== Calculators ==
			{{QTc_Calculator}}

	==External Links==		==External Links==
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	==References==		==References==
	<references/>		<references/>


	~~<div class="mw-collapsible mw-collapsed" style="border:1px solid #aaa; padding:5px; margin-top:10px;">~~
	~~<div style="font-weight:bold;">📊 QTc (Corrected QT Interval) Calculator [show]</div>~~
	~~<div class="mw-collapsible-content">~~
	~~{{QTc_Calculator}}~~
	~~</div>~~
	~~</div>~~
	[[Category:Cardiology]]		[[Category:Cardiology]]
	[[Category:Toxicology]]		[[Category:Toxicology]]

2026-03-21T13:41:40Z

Add QTc (Corrected QT Interval) calculator (collapsible)

← Revisión anterior		Revisión del 13:41 21 mar 2026
Línea 136:		Línea 136:
	<references/>		<references/>


			<div class="mw-collapsible mw-collapsed" style="border:1px solid #aaa; padding:5px; margin-top:10px;">
			<div style="font-weight:bold;">📊 QTc (Corrected QT Interval) Calculator [show]</div>
			<div class="mw-collapsible-content">
			{{QTc_Calculator}}
			</div>
			</div>
	[[Category:Cardiology]]		[[Category:Cardiology]]
	[[Category:Toxicology]]		[[Category:Toxicology]]

2022-05-14T12:40:10Z

Determining Cause

← Revisión anterior		Revisión del 12:40 14 may 2022
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	===Determining Cause===		===Determining Cause===
	*Pause Dependent (Acquired)		*Pause Dependent (Acquired)
	**Drug induced		**Drug induced (see drug list above)
	***[[Antiarrhythmics]]		***[[Antiarrhythmics]]
	***[[Phenothiazines]]		***[[Phenothiazines]]

2022-05-14T12:37:43Z

@@ Línea 9: / Línea 9: @@
 **Rate dependent and should become proportionately shorter with increasing heart rate
-===Drug List===
+===List of Drugs Causing QT Prolongation===
 *[[Antiarrhythmics]]
 **[[Amiodarone]], disopyramide, dofetilide, [[flecainide]], ibutilide, mexiletine, [[procainamide]], [[quinidine]], [[sotalol]]
@@ Línea 57: / Línea 57: @@
 ==Differential Diagnosis==
 *Pause Dependent (Acquired)
 **Drug induced
@@ Línea 86: / Línea 102: @@
 ***[[CVA]] (subarachnoid)
 ***Autonomic surgery (catechol excess: neck dissection, carotid endarterectomy, truncal vagotomy)
 ==Management==

2022-05-14T12:35:14Z

Background

← Revisión anterior		Revisión del 12:35 14 may 2022
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	==Background==		==Background==
			[[File:SinusRhythmLabels.svg\|thumb]]
			[[File:Grid.png\|thumb]]
	*Prolonged ventricular repolarization → increased risk of ventricular arrhythmias		*Prolonged ventricular repolarization → increased risk of ventricular arrhythmias
	**Males >440-450 ms		**Males >440-450 ms

2022-05-14T12:33:49Z

Background

← Revisión anterior		Revisión del 12:33 14 may 2022
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	==Background==		==Background==
	*Prolonged ventricular ~~repolarisation~~ → increased risk of ventricular ~~arrythmias~~		*Prolonged ventricular repolarization → increased risk of ventricular arrhythmias
	**Males >440-450 ms		**Males >440-450 ms
	**Females >500 ms		**Females >500 ms
	**Rule of thumb: Normal QT ~~interveal~~ is less than half of preceding RR interval		**Rule of thumb: Normal QT interval is less than half of preceding RR interval
	*QT interval is from the beginning of the Q wave to the end of the T wave		*QT interval is from the beginning of the Q wave to the end of the T wave
	**Rate dependent and should become proportionately shorter with increasing heart rate		**Rate dependent and should become proportionately shorter with increasing heart rate

2022-05-14T12:33:26Z

Background

← Revisión anterior		Revisión del 12:33 14 may 2022
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	*QT interval is from the beginning of the Q wave to the end of the T wave		*QT interval is from the beginning of the Q wave to the end of the T wave
	**Rate dependent and should become proportionately shorter with increasing heart rate		**Rate dependent and should become proportionately shorter with increasing heart rate


	===Drug List===		===Drug List===

2022-05-14T12:33:14Z

@@ Línea 7: / Línea 7: @@
 **Rate dependent and should become proportionately shorter with increasing heart rate
 ===Drug List===
@@ Línea 84: / Línea 46: @@
 *Urinary antispasmodics
 **Solifenacin
 ==Evaluation==

2021-09-22T22:22:30Z

Pause Dependent (precipitated by bradycardia)

← Revisión anterior		Revisión del 22:22 22 sep 2021
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	**Increase HR >80 ([[isoproterenol]] or [[overdrive pacing]])		**Increase HR >80 ([[isoproterenol]] or [[overdrive pacing]])
	**[[Magnesium sulfate]] IV		**[[Magnesium sulfate]] IV
	**Consider [[~~lidocaina~~, pacing]]		**Consider [[lidocaine]], [[transvenous pacing]]<ref>Simon HL, Behr ER. Pharmacological treatment of acquired QT prolongation and torsades de pointes. Br J Clin Pharmacol. 2016 Mar; 81(3): 420–427. doi: 10.1111/bcp.12726</ref>

	===Adrenergic Dependent (precipited by tachycardia)===		===Adrenergic Dependent (precipited by tachycardia)===

2021-09-16T22:18:35Z

Management

← Revisión anterior		Revisión del 22:18 16 sep 2021
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	*Stable		*Stable
	**Treat underlying etiology		**Treat underlying etiology
	**Increase HR ([[isoproterenol]] or [[overdrive pacing]])		**Increase HR >80 ([[isoproterenol]] or [[overdrive pacing]])
	**[[Magnesium sulfate]] IV		**[[Magnesium sulfate]] IV
	**Consider [[~~amiodarone~~]]		**Consider [[lidocaina, pacing]]

	===Adrenergic Dependent (precipited by tachycardia)===		===Adrenergic Dependent (precipited by tachycardia)===