A answered. Atrial fibrillation can be caused by a number of different things that predispose the heart to arrhythmias. Most commonly, longstanding high blood pressure is the cause. Other causes include heart disease such as blockage in the coronary vessels or diseases such as pneumonia or COPD.
A board, typically with a hole for the thumb, which an artist can hold while painting and on which colors are mixed. 2. a. The range of colors used in a visual medium, in a picture, or by an artist: a limited palette.
(vÄ­n-yÄtâ²) n. 1. A decorative design placed at the beginning or end of a book or chapter of a book or along the border of a page. 2. An unbordered picture, often a portrait, that shades off into the surrounding color at the edges. 3. a.