File:E0007532.jpg: Difference between revisions

Latest revision as of 07:54, 13 February 2012

Description	This is the same patient in the electrophysiology laboratory. A ventricular catheter is used to stimulate the ventricle and a right atrial (RA) catheter is used to record the atrial activity. The patient has been premedicated with digoxin 0.25mg/day. The tracing shows four surface leads and one intra cardiac recording. Supraventricular tachycardia is induced with a train of ventricular beats and a final premature beat. Note that the last stimulated beat has a shorter pacing interval and results in a longer interval between it and the next RA deflection. This then sets off AVNRT with the RA activity now closely associated with the QRS. The short-long interval between the initiating beat and the first QRS of the tachycardia is similar to that of the spontaneous tracing. The long interval suggest conduction down a slow anterograde pathway which is typical of AVNRT.
Category	Case reports by Michael Rosengarten
Source	EKG World Encyclopedia http://cme.med.mcgill.ca/php/index.php , courtesy of Michael Rosengarten BEng, MD.McGill
Date	2012
Author	Michael Rosengarten BEng, MD.McGill
Permission	Creative Commons Attribution Noncommercial Share-Alike License

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Camera manufacturer	HP
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Date and time of data generation	23:31, 2 May 2009
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File change date and time	14:28, 13 February 2012
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Date and time of digitizing	23:31, 2 May 2009
Date metadata was last modified	22:28, 13 February 2012
Unique ID of original document	4856E29C11D40F15A9CCD45DD9942DDA
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+== Summary ==
+{{Information
+|Description = This is the same patient in the electrophysiology laboratory. A ventricular catheter is used to stimulate the ventricle and a right atrial (RA) catheter is used to record the atrial activity. The patient has been premedicated with digoxin 0.25mg/day. The tracing shows four surface leads and one intra cardiac recording.
+Supraventricular tachycardia is induced with a train of ventricular beats and a final premature beat. Note that the last stimulated beat has a shorter pacing interval and results in a longer interval between it and the next RA deflection. This then sets off AVNRT with the RA activity now closely associated with the QRS.
+The short-long interval between the initiating beat and the first QRS of the tachycardia is similar to that of the spontaneous tracing. The long interval suggest conduction down a slow anterograde pathway which is typical of AVNRT.
+|Category = [[Case_reports_from_Michael_Rosengarten|Case reports by Michael Rosengarten]]
+|Source = EKG World Encyclopedia http://cme.med.mcgill.ca/php/index.php , courtesy of Michael Rosengarten BEng, MD.McGill
+|Date = 2012
+|Author = Michael Rosengarten BEng, MD.McGill
+|Permission = {{by-nc-sa-3.0}}
+|other_versions = None
+}}