Arrhythmias/Pacemakers
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Stress as a Reversible Risk Factor in Atrial Fibrillation Management
Researchers scrutinize this recognized but poorly defined relationship.
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How Many Leads Are Abnormal?
The figure was obtained after cardiac catheterization for new chest pain. The rhythm is sinus bradycardia at ~50 beats/minute. All intervals are normal. The axis is leftward, but not enough to qualify as a hemiblock. There is no chamber enlargement.
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Does Electrode Position Affect the Results of Cardioversion?
A randomized trial of anteroposterior vs. anterolateral electrode positioning for the biphasic energy cardioversion of atrial fibrillation showed the anterolateral positioning is most effective.
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Investigators Use Personalized Modeling to Diagnose Hypertrophic Cardiomyopathy
Blended techniques could help clinicians draft more effective treatment plans.
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Should the Cath Lab Be Activated?
How should one interpret the ECG in the figure? Should the cardiac cath lab be activated on the basis of this ECG?
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EDs See More High-Risk Patients with Ventricular Assist Devices
To reduce risks for patients with ventricular assist devices, providers should learn how they work, what complications need to be evaluated, and how to do so. Ensure systems are put in place for providers to care for these patients in an expeditious and effective way.
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Post-Exercise Premature Ventricular Contraction, or Aberrancy?
The ECG in the figure is a post-exercise tracing. There are four wider and slightly early occurring beats in the long lead rhythm strips. Are these beats premature ventricular contractions or premature atrial contractions conducted with aberration?
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Is This Wellens’ Syndrome?
The ECG in the figure is from a young adult man known to have a bicuspid aortic valve. He presented to the ED following a presyncopal episode. The patient has not experienced chest pain recently. Does this patient have Wellens’ syndrome?
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Coffee Consumption and the Curious Effects on the Heart
Real-time patient monitoring allowed researchers to observe a strange mix of short-term harms and benefits.
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What’s the Best Way to Fix ‘Leaky’ Heart Valves?
Researchers scrutinized common surgical techniques.