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Cardioversion

ECG Basics: Torsades Cardioverted

Fri, 12/20/2013 - 13:08 -- Dawn

These two strips are from one patient who was electrically cardioverted twice in a few minutes.  The original reason for the cardioversion was Torsades de Pointes, a type of polymorphic ventricular tachycardia associated with a long QT interval.  For more information about TDP, go to this LINK.  It is a bit difficult to comment on the patient's post-cardioversion rhythm, because so little of it is shown.  It appears to be sinus, with a wide QRS.

ECG Basics: NIPS Procedure, ICD Test

Fri, 09/27/2013 - 13:20 -- Dawn

This is a rhythm strip from a NIPS procedure (non-invasive programmed stimulaltion), which is a programming test for an implantable cardioverter defibrillator (ICD).  The test is done under light anesthesia, similar to that used for colonoscopy.   In this example, the patient is in normal sinus rhythm at the beginning of the procedure.  The pacemaker technician overdrives the patient's rate to observe the pacing function, then a stimulus is delivered to cause ventricular fibrillation (V Fib).

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