BACKGROUND: Atrial fibrillation and other cardiac arrhythmias pose a major public health burden, but prevention remains ...

Background: Cardiovascular disease caused by atherosclerosis is responsible for 18 million deaths annually, highlighting a significant need for new medical therapies, especially for patients who are ...

Invasive epicardial coronary physiologic assessment is increasingly performed to evaluate the hemodynamic significance of ...

The United States is facing a demographic shift as the population of older adults grows rapidly, with the proportion of ...

Missing data in clinical trials remains an ongoing concern. With the expansion of data privacy efforts and the consequent inability to contact trial participants for follow-up, the magnitude and ...

eLetters should relate to an article recently published in the journal and are not a forum for providing unpublished data. Comments are reviewed for appropriate use of tone and language. Comments are ...

The rapid development and integration of artificial intelligence (AI), including predictive, generative, and emerging agentic ...

A short A-V conduction time, whether present with normal or with abnormal QRS complex, is associated with an increased incidence of paroxysmal rapid heart action. There are a considerable number of ...

The action of two pure veratrum alkaloids, veratridine and protoveratrine, in human hypertension is described for the first time. The vasodepressor reflex pathway involved in the response to these ...

The effects of both direct and reflexly induced increases in sympathetic activity on the blood flow to an extremity at rest and during muscular activity have been studied. When the O2 uptake of an ...

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eLetters should relate to an article recently published in the journal and are not a forum for providing unpublished data. Comments are reviewed for appropriate use of tone and language. Comments are ...