the segment on an *electrocardiogram that represents the interval between the end of ventricular *depolarization (QRS complex) and the beginning of ventricular *repolarization (T wave). The S–T segment is usually depressed by *ischaemia of the heart muscle but raised in the initial phase of myocardial infarction. It is therefore very useful for diagnosis in patients presenting with chest pain.
(FSGS) a condition in which there is scarring in some (focal) glomeruli that affects only part (segmental) of the glomerular capillary tuft. Primary FSGS overlaps with *minimal change nephropathy and typically presents with the *nephrotic syndrome. Secondary FSGS has a wide range of causes, from viral infections, including HIV, to haemodynamic changes associated with reduced renal mass, hypertension, and obesity, and is usually associated with less severe proteinuria.... focal segmental glomerulosclerosis
n. (in anatomy) a portion of a tissue or organ, usually distinguishable from other portions by lines of demarcation. For example, the uterus consists of upper and lower segments. The anterior segment of the eye is the front portion, including the cornea, anterior chamber, iris, and lens. See also somite.... segment
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