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.
Less common causes of chest pain. Some of the less common causes of chest pain include the following. Pleurisy. Pleurisy is due to inflammation of the pleura, a thin membrane with two layers-one which lines the inside of the muscle and ribs of the chest wall, the other which surrounds the lungs.ressure over the affected area also causes sharp pain. The pain is usually confined to a small area but it can spread (radiate) to a wider area. The most common sites of pain are close to the sternum at the level of the 4th, 5th and 6th ribs. See separate leaflet called Costochondritis for more details.