Complete heart block occurs when electrical impulses in the heart’s upper chambers (atria) don't travel down to the lower chambers (ventricles).

Learn about the link between menopause and heart palpitations, their potential risks, and how to discuss them with your doctor.

Choose from Pride Rainbow Heart stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else.

Browse 60+ sacred heart with cross and flames stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art.

A mathematical and physical basis for heart-vector projection concepts is presented and its significance for current practices in frontal-plane and spatial electrocardiography is discussed.