Left atrial enlargement refers to dilation of the left atrium which occurs from multiple disease states that can chronically increase the left atrial pressure. These include congestive heart failure, ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...

Age, gender, and body size can affect the size of the left atrium, but several medical conditions can also be responsible. The left atrium is one of the four chambers of the heart. It’s located in the ...

This patient had severe mitral stenosis from rheumatic mitral valve disease causing massive left atrial enlargement. Note the morphology of the PVC in lead V1. The R is greater than the R' in a right ...

The lead-I electrocardiogram (ECG) devices were assessed when they were used in addition to 12‑lead ECGs. Clinical experts advised that a 12‑lead ECG would still be used after lead-I ECGs to identify ...

Optical sensors on wearable devices can detect irregular pulses. The ability of a smartwatch application (app) to identify atrial fibrillation during typical use is unknown. Participants without ...

A 54-year-old woman presents with new onset of paroxysmal atrial fibrillation documented on Holter monitoring. The patient does not report any cardiac complaints such as dyspnea, angina, or ...