SOBOEShortness of breath on exertion (SOBOE) refers to SOB when exercising. Causes include COPD and CCF. |
SPECTSingle-photon emission computed tomography (SPECT) is a non-invasive, nuclear medicine imaging technique (similar to PET), combining the information gained from scintigraphy with that of CT. SPECT provides metabolic and functional information. SPECT may be combined with a separate CT machine, providing hybrid imaging: single photon emission computed tomography-computerised tomography (SPECT-CT). |
STEMISTEMI is ST-elevation MI |
STISTI is a sexually-transmitted infection (also termed STD, sexually-transmitted disease). STIs are passed through unprotected sex or genital contact. |
SVCThe superior vena cava (SVC) is a large valveless vein that returns deoxygenated blood from the upper body to the right atrium of the heart. |
SVTSupraventricular tachycardia (SVT) is an abnormally fast heart rhythm due to aberrant electrical activity in the upper heart (arising in the atria or atrioventricular node). There are four main types: AF, paroxysmal SVT, atrial flutter, and Wolff–Parkinson–White syndrome. |