Premature junctional contraction - Revision history

ClaireLewis at 17:45, 25 October 2020

2020-10-25T17:45:10Z

← Revisión anterior		Revisión del 17:45 25 oct 2020
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	==Background==		==Background==
	Premature junctional contractions (PJCs) are typically seen in patients with underlying heart failure, digoxin ~~toxity~~, or myocardial ischemia. They occur due to an ectopic pacemaker within the AV node or AV bundle.<ref>Brady W, Laughrey T, Ghaemmaghami C. Cardiac rhythm disturbances. In Tintinalli's Emergency Medicine: A Comprehensive Guide. Tintinalli J, et al. ed. 8th ed. McGraw Hill. New York, NY, 2016.</ref>		Premature junctional contractions (PJCs) are typically seen in patients with underlying [[heart failure]], [[digoxin toxicity]], or [[myocardial ischemia]]. They occur due to an ectopic pacemaker within the AV node or AV bundle.<ref>Brady W, Laughrey T, Ghaemmaghami C. Cardiac rhythm disturbances. In Tintinalli's Emergency Medicine: A Comprehensive Guide. Tintinalli J, et al. ed. 8th ed. McGraw Hill. New York, NY, 2016.</ref>

	==Clinical Features==		==Clinical Features==
	*Patients may be asymptomatic or experience the following:		*Patients may be asymptomatic or experience the following:
	**Palpitations		**[[Palpitations]]
	**Shortness of breath		**[[Shortness of breath]]
	**Anxiety		**[[Anxiety]]
	**Symptoms of underlying disease process		**Symptoms of underlying disease process

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	==Evaluation==		==Evaluation==
	*Obtain EKG and look for:		*Obtain [[EKG]] and look for:
	**Ectopic P waves that have different morphology than the SA node-initiated P waves		**Ectopic P waves that have different morphology than the SA node-initiated P waves
	**P waves may occur before or after QRS		**P waves may occur before or after QRS
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	==References==		==References==
	<references/>		<references/>
			[[Category:Cardiology]]

Ihearttroponin: /* Clinical Features */

2020-03-24T21:02:21Z

Clinical Features

← Revisión anterior		Revisión del 21:02 24 mar 2020
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	==Clinical Features==		==Clinical Features==
	*Palpitations		*Patients may be asymptomatic or experience the following:
	*Shortness of breath		**Palpitations
	*Anxiety		**Shortness of breath
	*~~Asymptomatic~~		**Anxiety
	*Symptoms of underlying disease process		**Symptoms of underlying disease process

	==Differential Diagnosis==		==Differential Diagnosis==

Ihearttroponin: /* Evaluation */

2020-03-24T20:59:26Z

Evaluation

← Revisión anterior		Revisión del 20:59 24 mar 2020
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	**P waves may occur before or after QRS		**P waves may occur before or after QRS
	**QRS should have similar morphology to SA node-initiated QRS complexes		**QRS should have similar morphology to SA node-initiated QRS complexes
	**PJCs may be isolated, occur in [[trigeminy]] or [[bigeminy]], or be multifocal.<ref>Brady W, Laughrey T, Ghaemmaghami C. Cardiac rhythm disturbances. In Tintinalli's Emergency Medicine: A Comprehensive Guide. Tintinalli J, et al. ed. 8th ed. McGraw Hill. New York, NY, 2016.</ref>		**PJCs may be isolated, occur in trigeminy or bigeminy, or be multifocal.<ref>Brady W, Laughrey T, Ghaemmaghami C. Cardiac rhythm disturbances. In Tintinalli's Emergency Medicine: A Comprehensive Guide. Tintinalli J, et al. ed. 8th ed. McGraw Hill. New York, NY, 2016.</ref>
	*Rule out underlying disease processes such as [[digoxin toxicity]], [[heart failure]], or [[myocardial ischemia]].		*Rule out underlying disease processes such as [[digoxin toxicity]], [[heart failure]], or [[myocardial ischemia]].

Ihearttroponin: /* Evaluation */

2020-03-24T20:59:04Z

Evaluation

← Revisión anterior		Revisión del 20:59 24 mar 2020
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	**P waves may occur before or after QRS		**P waves may occur before or after QRS
	**QRS should have similar morphology to SA node-initiated QRS complexes		**QRS should have similar morphology to SA node-initiated QRS complexes
			**PJCs may be isolated, occur in [[trigeminy]] or [[bigeminy]], or be multifocal.<ref>Brady W, Laughrey T, Ghaemmaghami C. Cardiac rhythm disturbances. In Tintinalli's Emergency Medicine: A Comprehensive Guide. Tintinalli J, et al. ed. 8th ed. McGraw Hill. New York, NY, 2016.</ref>
	*Rule out underlying disease processes such as [[digoxin toxicity]], [[heart failure]], or [[myocardial ischemia]].		*Rule out underlying disease processes such as [[digoxin toxicity]], [[heart failure]], or [[myocardial ischemia]].

Ihearttroponin: Created page with "==Background== Premature junctional contractions (PJCs) are typically seen in patients with underlying heart failure, digoxin toxity, or myocardial ischemia. They occur due to..."

2020-03-24T20:58:02Z

Created page with "==Background== Premature junctional contractions (PJCs) are typically seen in patients with underlying heart failure, digoxin toxity, or myocardial ischemia. They occur due to..."

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==Background==
Premature junctional contractions (PJCs) are typically seen in patients with underlying heart failure, digoxin toxity, or myocardial ischemia. They occur due to an ectopic pacemaker within the AV node or AV bundle.<ref>Brady W, Laughrey T, Ghaemmaghami C. Cardiac rhythm disturbances. In Tintinalli's Emergency Medicine: A Comprehensive Guide. Tintinalli J, et al. ed. 8th ed. McGraw Hill. New York, NY, 2016.</ref>

==Clinical Features==
*Palpitations
*Shortness of breath
*Anxiety
*Asymptomatic
*Symptoms of underlying disease process

==Differential Diagnosis==
{{Palpitations DDX}}

==Evaluation==
*Obtain EKG and look for:
**Ectopic P waves that have different morphology than the SA node-initiated P waves
**P waves may occur before or after QRS
**QRS should have similar morphology to SA node-initiated QRS complexes
*Rule out underlying disease processes such as [[digoxin toxicity]], [[heart failure]], or [[myocardial ischemia]].

==Management==
*No specific treatment indicated, though treatment of the underlying disorder may be indicated.

==Disposition==
*Discharge home without specific follow-up, unless indicated for the underlying disorder.

==See Also==
*[[Palpitations]]
*[[Premature atrial contraction]]
*[[Premature junctional contraction]]

==External Links==

==References==
<references/>