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Wide complex tachycardia, resistant to cardioversion. Some fascinating features here.

Dr. Smith's ECG Blog

Here is her ECG: Regular Wide Complex Tachycardia. Could it be atrial tachycardia with RBBB and LPFB aberrancy? Here it is: There is sinus with normal conduction, very different from her tachycardia. Severely decreased LV function. What do you think? What do you want to do? She was not on any medication that could cause this.

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Very fast regular tachycardia: 2 ECGs from the same patient. What is going on?

Dr. Smith's ECG Blog

ECG#1 There is a regular tachycardia with a ventricular rate of about 180 bpm. Smith comment : When there is a regular wide complex tachycardia, first assess whether it is sinus or not. Is it sinus or is it a supraventricular dysrhythmia? Put shortly is SVT with "Shark Fin STE" and not ventricular tachycardia.

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A 50-something with Regular Wide Complex Tachycardia: What to do if electrical cardioversion does not work?

Dr. Smith's ECG Blog

I find AV dissociation in VT to be very difficult to differentiate from artifact, as there are always random blips on tachycardia tracings. If you don't know what the dysrhythmia is, then try procainamide. Read this post: Idiopathic Ventricular Tachycardias for the EM Physician 2. Ken notes AV dissociation. What to do now?

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A young man with another episode of tachycardia. What is it? And why give adenosine in sinus rhythm?

Dr. Smith's ECG Blog

The ECGs show a wide complex, irregularly irregular tachycardia. At that time, he presented via EMS and had received magnesium and lidocaine prehospital for concerns of ventricular tachycardia. On arrival to the ED, he was noted to be in a wide complex tachycardia with a rate in the 240s.

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A teenager involved in a motor vehicle collision with abnormal ECG

Dr. Smith's ECG Blog

The ECG shows sinus tachycardia with RBBB and LAFB, without clear additional superimposed signs of ischemia. See these publications for more information Overall, management for cardiac contusion is mostly supportive unless surgical complications develop, involving appropriate treatment of dysrhythmias and hemodynamic instability.

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60-something with wide complex tachycardia: from where does the rhythm originate?

Dr. Smith's ECG Blog

Here is her ED ECG: Here is the ED physician's interpretation: IMPRESSION UNCERTAIN REGULAR RHYTHM, wide complex tachycardia, likely p-waves. LEFT BUNDLE BRANCH BLOCK [120+ ms QRS DURATION, 80+ ms Q/S IN V1/V2, 85+ ms R IN I/aVL/V5/V6] Comparison Summary: LBBB and tachycardia are new. This is clearly ventricular tachycardia.

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Back to basics: what is this rhythm? What are your options for treating this patient?

Dr. Smith's ECG Blog

We see a regular tachycardia with a narrow QRS complex and no evidence of OMI or subendocardial ischemia. The differential of a regular narrow QRS tachycardia is sinus tachycardia, SVT, and atrial flutter with regular conduction. Now the patient is in sinus tachycardia. Her initial EKG is below. Same as initial ECG.