Frequently used as an abbreviation for secondary to. You might also see it written as 2 or 2/2. Feb 7, '11. We were told to use s/t instead of r/t if the defining characteristic you cite in your NDX statement is an MDX rather than a sign or symptom.
Examples of heart-related causes of chest pain include: Heart attack. A heart attack is a result of a blood clot that's blocking blood flow to your heart muscle. Angina. Thick plaques can gradually build up on the inner walls of the arteries that carry blood to your heart.
What Causes Chest Pain? Chest pain is a common symptom of many heart problems, including: Coronary artery disease, which happens when cholesterol builds up on the walls of your arteries. This can make your arteries narrow, or even block them completely, raising your risk of a heart attack or stroke.