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Cardiomatics guide: Analyzing arrhythmias made easy

Cardiomatics

Sinus tachycardia – sinus rhythm above 100 bpm is a sinus tachycardia. Sinus bradycardia – sinus rhythm below 60 bpm is a sinus bradycardia. Ventricular tachycardia – more than 7 consecutive complexes originating from ventricles at a rate of > 100 bpm. Usually does not exceed 160 bpm.

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Wide-complex tachycardia: VT, aberrant, or "other?"

Dr. Smith's ECG Blog

Wide-complex tachycardia: VT or aberrant, or "other?" A wide-complex tachycardia in an older patient must immediately suggest ventricular tachycardia. Sinus tachycardia with aberrancy was unlikely as the rate was consistently 150 bpm, without spontaneous variation. And indeed the QRS morphology strongly supported VT (e.g.

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Wide-complex tachycardia that didn’t follow the rules

Dr. Smith's ECG Blog

Initial ECG in the ED: Presenting ECG : Wide-complex tachycardia at a rate about 200. This is overwhelmingly likely to be ventricular tachycardia, even if only age and medical history are considered. Nevertheless, the widths of both the QRS complex and the RS duration are similar in both the old ECG and the tachycardia.

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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. The Initial ECG in Today's Case: As per Dr. Meyers — the initial ECG in today's case shows sinus tachycardia with bifascicular block ( = RBBB/LAHB ). Sinus Tachycardia ( common in any trauma patient. ).

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How a pause can cause cardiac arrest

Dr. Smith's ECG Blog

But there are 3 other wide beats in the tachycardia that begins with beat #6 ( = beats #7; 13,14 ). Similar-looking wide beats #7,13,14 must also be aberrantly conducted supraventricular impulses — and since P waves are lost after beat #6 and subsequent R-R intervals are irregular — beats #7-thru-16 constitute a run of rapid AFib.

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Patient in Single Vehicle Crash: What is this ST Elevation, with Peak Troponin of 6500 ng/L?

Dr. Smith's ECG Blog

Sinus Tachycardia ( common in any trauma patient. ). Other Arrhythmias ( PACs, PVCs, AFib, Bradycardia and AV conduction disorders — potentially lethal VT/VFib ). RBBB ( as by far the most common conduction defect — owing to the more vulnerable anatomic location of the RV ).