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.
Gastrointestinal causes of chest pain. The following are gastrointestinal causes of chest pain: acid reflux, or heartburn; swallowing problems related to disorders of the esophagus; gallstones ; inflammation of the gallbladder or pancreas; Lung-related causes of chest pain. The following are lung-related causes of chest pain: pneumonia; viral bronchitis