| systemic therapy | <pharmacology> Treatment that reaches and affects cells all over the body. (16 Dec 1997) |
|---|---|
| systemic vascular resistance | An index of arteriolar compliance or constriction throughout the body; equal to the blood pressure divided by the cardiac output. (05 Mar 2000) |
| systemic venous hypertension | Increased pressure in the veins ultimately leading to the right atrium nearly always due to disease of the right heart but occasionally due to blockade of one or both venae cavae. (05 Mar 2000) |
| systemic-onset juvenile chronic arthritis | See: Systemic-onset juvenile rheumatoid arthritis (still's disease). (12 Dec 1998) |
| systemic-onset juvenile rheumatoid arthritis | <rheumatology> A form of joint disease, arthritis, that presents with systemic upset. Clinical signs: high intermittent fever, a salmon-coloured skin rash, swollen lymph glands, enlargement of the liver and spleen, and inflammation of the lungs (pleuritis) and around the heart (pericarditis). The arthritis itself may not be immediately apparent but once apparent, it may persist after the systemic symptoms have resolved. Synonym: Still's disease. (03 Jul 1999) |
| systemless | 1. Being without system. 2. Not agreeing with some artificial system of classification. 3. <biology> Not having any of the distinct systems or types of structure, as the radiate, articulate, etc, characteristic of organic nature; as, all unicellular organisms are systemless. Source: Websters Dictionary (01 Mar 1998) |
| systemoid | Resembling a system; denoting a tumour of complex structure resembling an organ. (05 Mar 2000) |
| systems analysis | The analysis of an activity, procedure, method, technique, or business to determine what must be accomplished and how the necessary operations may best be accomplished. (12 Dec 1998) |
| systems integration | The procedures involved in combining separately developed modules, components, or subsystems so that they work together as a complete system. (12 Dec 1998) |
| systems theory | Principles, models, and laws that apply to complex interrelationships and interdependencies of sets of linked components which form a functioning whole, a system. Any system may be composed of components which are systems in their own right (sub-systems), such as several organs within an individual organism. (12 Dec 1998) |
| systole | <physiology> The time at which ventricular contraction occurs. (27 Sep 1997) |
| systole alternans | <physiology> Contraction of only one ventricle of the heart. Hemisystole is noticed in rare cases of insufficiency of the mitral valve, in which both ventricles at times contract simultaneously, as in a normal heart, this condition alternating with contraction of the right ventricle alone; hence, intermittent hemisystole. Source: Websters Dictionary (01 Mar 1998) |
| systolic | <physiology> Indicating the maximum arterial pressure during contraction of the left ventricle of the heart. (18 Nov 1997) |
| systolic blood pressure | <cardiology, physiology> The pressure exerted on the walls of the arteries during the contraction phase of the heart. Considered abnormally elevated if consistently over 150 mmHg. Systolic blood pressure varies with age, sex, size and relative condition. (27 Sep 1997) |
| systolic bruit | Any abnormal sound or any murmur heard during systole. (05 Mar 2000) |