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Cardiac resynchronization therapy via left bundle branch pacing in heart failure with complete left bundle branch block: is the defibrillator needed?

Frontiers in Cardiovascular Medicine

AimsThis retrospective cohort study aimed to investigate the efficacy of dual-chamber left Bundle branch pacing (LBBP) as an alternative therapy for heart failure patients with complete left bundle branch block (CLBBB) and indications for defibrillator with cardiac resynchronization therapy (CRT-D).Methods34 to 61.06.0% (P<0.001).

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Completely Wireless: First Concomitant Dual Chamber Leadless Pacemaker and Subcutaneous Defibrillator Implant

HeartRhythm

While in the hospital, he had witnessed ventricular fibrillation (VF) arrest for which he received external defibrillation. An echocardiogram showed newly reduced left ventricular ejection fraction of 30-35%.

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Cardiac arrest, defibrillated, diffuse ST depression and ST Elevation in aVR. Why?

Dr. Smith's ECG Blog

Again, it is common to have an ECG that shows apparent subendocardial ischemia after resuscitation from cardiac arrest, after defibrillation, and after cardioversion. An echocardiogram showed: Left ventricular hypertrophy concentric. Much depends on the post resuscitation ECG and its evolution shortly after defibrillation.

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Torsade in a patient with left bundle branch block: is there a long QT? (And: Left Bundle Pacing).

Dr. Smith's ECG Blog

Because she has cardiomyopathy and ventricular dysrhythmias, the pacer included an Implanted Cardioverter-Defibrillator (ICD) Echo 6 days later after CRT: Normal estimated left ventricular ejection fraction. The septum is punctured with the active fixation screw of the lead - so essentially you bore the septum with the screw helix."

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A 40-something presented after attempted prehospital resuscitation with persistent Ventricular Fibrillation

Dr. Smith's ECG Blog

He underwent further standard resuscitation EXCEPT that we applied the Inspiratory Threshold Device ( ResQPod ) AND applied Dual Sequential Defibrillation (this simply means we applied 2 sets of pads, had 2 defib machines, and defibrillated with both with only a fraction of one second separating each defibrillation.

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Cardiac Arrest, acute ST elevation and depression superimposed on LVH, but NOT due to ACS

Dr. Smith's ECG Blog

He was resuscitated with chest compressions and defibrillation and 1 mg of epinephrine. An echocardiogram confirmed aortic stenosis with a large pressure gradient. This young male had ventricular fibrillation during a triathlon. On his bib it stated that he had a congenital heart disorder. His initial ECG is shown here.

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Abstract 4143264: A Case of Spike-on-T Phenomenon and Polymorphic Ventricular Tachycardia

Circulation

She was externally defibrillated with 200J and received magnesium and an IV amiodarone bolus. She was successfully defibrillated with 360J. Transthoracic echocardiogram showed normal biventricular systolic function. Telemetry showed Spike-on-T phenomenon which initiated PMVT. Her CRT-D was reprogrammed to DDD 80-140 bpm.