Bigeminal rhythm: Difference between revisions
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* Concealed bigeminy | * Concealed bigeminy | ||
* Escape capture bigeminy | * Escape capture bigeminy | ||
==Pathophysiology== | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
Revision as of 15:04, 23 August 2013
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Rim Halaby, M.D. [2]
Synonyms and keywords: Bigeminy, bigeminal beat
Overview
Classification
- Atrial bigeminy
- Junctional bigeminy
- Ventricular bigeminy
- Concealed bigeminy
- Escape capture bigeminy
Pathophysiology
Differential Diagnosis
Diagnosis
ECG
Shown below is an EKG depicting atrial bigeminy. The EKG shows a regularly irregular rhythm at a rate of about 75/minute. There are two P wave morphologies best seen in lead V1.
Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG depicting bigeminy. The pacemaker is an atrial pacer set at 30/min. Note the marker channel documenting atrial pacing and then sensing of the QRS in the refractory period of the pacemaker. The paced atrial beats seem to stimulate a normal sinus beat and hence create the bigeminal rhythm.
Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page