Although not the only cause of chest pain, these heart problems are common causes: Coronary Artery Disease, or CAD. A blockage in the heart blood vessels that reduces blood flow and oxygen to the heart muscle itself. This can cause pain known as angina. It's a symptom of heart disease but typically does not cause permanent damage to the heart. It is, though, a sign that you are a candidate for a heart attack at some point in the future. The chest pain may spread to your arm, shoulder, jaw, or back.
Esophagogastroduodenoscopy, also called by various other names, is a diagnostic endoscopic procedure that visualizes the upper part of the gastrointestinal tract up to the duodenum.
home / medterms medical dictionary a-z list / q.d. (on prescription) definition Medical Definition of q.d. (on prescription) q.d. (on prescription): Seen on a prescription, q.d. (or qd) means one a day (from the Latin quaque die). The abbreviation is sometimes written without a period in capital letters as QD. However it is written, it is one of a number of hallowed abbreviations of Latin terms that have been traditionally used in prescriptions to specify the frequency with which medicines should be taken. Other examples include: