Remove 2020 Remove Defibrillator Remove Tachycardia
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ECG Blog #436 — Bigeminy or Alternans?

Ken Grauer, MD

IMPRESSION: Given the presence of a wide tachycardia — with 2 distinct QRS morphologies, and no sign of P waves — a presumed diagnosis of B i D irectional Ventricular Tachycardia has to be made. Despite prolonged resuscitation with multiple defibrillation attempts — the patient could not be saved. =

Blog 161
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PO-02-002 DEVICE ALGORITHM FACILITATED SHORT-LONG-SHORT SEQUENCE RESULTING IN POLYMORPHIC VENTRICULAR TACHYCARDIA: A CASE STUDY

HeartRhythm

Short-long-short (S-L-S) electrocardiographic cycle length patterns are associated with incidence of ventricular tachycardia (VT) and ventricular fibrillation (VF). It is also recognised that pacemakers can facilitate these cycle length sequences, and that the observation of these sequences can predict future VT/VF events.

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What kind of AV block is this? And why does she develop Ventricular Tachycardia?

Dr. Smith's ECG Blog

Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. She was given CRT-D (Cardiac Resynchronization Therapy-Defibrillator). During the next 24 hours, she experienced periods of complete AV block with a ventricular escape rhythm in the 20s. She was started on isoprenalin (isoproterenol).

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Association between implanted cardioverter-defibrillators and mortality for patients with left ventricular ejection fraction between 30% and 35%

Open Heart

Background Consensus guidelines support the use of implanted cardioverter-defibrillators (ICD) for primary prevention of sudden cardiac death in patients with either non-ischaemic or ischaemic cardiomyopathy with left ventricular ejection fraction (LVEF) ≤35%. vs 65.4%, p<0.0001), more often white (87.5% vs 38.2%, p<0.0001).

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ECG Blog #434 — WHY Did this Patient Arrest?

Ken Grauer, MD

The rhythm is regular — at a rate just over 100/minute = sinus tachycardia ( ie, the R-R interval is just under 3 large boxes in duration ). Continuing with assessment of ECG #1 in Figure-2: The rhythm is sinus tachycardia at ~110/minute. A series of VFib episodes followed — each time with successful defibrillation.

Blog 162
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Does this T wave pattern mean anything?

Dr. Smith's ECG Blog

She was successfully revived after several rounds of ACLS including defibrillation and amiodarone. An Initial ECG was performed: Initial ECG: Sinus tachycardia with prolonged QT interval (QTc of 534 ms by Bazett). In particular — QRS alternans during narrow SVT rhythms has been associated with reentry tachycardias.

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Palpitations while awaiting CABG

Dr. Smith's ECG Blog

The team immediately paged cardiology, concerned for polymorphic ventricular tachycardia. Since sinus conducted QRS complexes cannot co-exist together with ventricular tachycardia, this must all be artifact. The November 10, 2020 post — for PTA. The October 17, 2020 post — for a 70-year old woman with " Artifactual VT ".