| EDR | early diastolic relaxation; effective direct radiation; electrodermal response |
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| ERM | electrochemical relaxation method; extended radical mastectomy |
| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
| IVRT | isovolumic relaxation time |
| LR | labeled release; laboratory references; laboratory report; labor room; lactated Ringer [solution]; l... |
| endothelium derived relaxation factor | <biochemistry> This compound is produced from L arginine by the enzyme nitric oxide synthase. Acts as a potent vasorelaxant via elevation of intracellular cGMP in vascular smooth muscle. Synthesis of nitric oxide is not confined to endothelium, isoforms of nitric oxide synthase are also found in brain, neutrophils and platelets. Synonym: endothelium derived relaxation factor. Acronym: NO (29 Dec 1997) |
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| transverse relaxation | In nuclear magnetic resonance, the rapid decay of the nuclear magnetization vector at right angles to the magnetic field after the 90 |
| longitudinal relaxation | In nuclear magnetic resonance, the return of the magnetic dipoles of the hydrogen nuclei (magnetization vector) to equilibrium parallel to the magnetic field, after they have been flipped 90 |
| abiotic stress | <botany> Nonliving environmental factors (such as drought, extreme cold or heat, high winds) that can have harmful effects on plants. (06 May 1997) |
| acute stress reaction | A sudden bout of anxiety that is often accompanied by the features of hyperventilation (tingling around mouth and in fingertips, rapid breathing, faintness or fainting). (27 Sep 1997) |
| biotic stress | <biology> Living organisms which can harm plants, such as viruses, fungi, bacteria, and harmful insects. (19 Jan 1998) |
| magnetic stress tensor | <radiobiology> A second-rank tensor, proportional to the dyadic product of the magnetic field (B) with itself. The divergence of the magnetic stress tensor gives that part of the force which a magnetic field exerts on a unit volume of conducting fluid due to the curvature of the magnetic field lines. (09 Oct 1997) |
| contraction stress test | A test used to evaluate foetal well-being by inducing contractions and analyzing the foetal heart rate response. (05 Mar 2000) |
| porcine stress syndrome | A severe form of fever that occurs as a reaction to certain anaesthetic agents and muscle relaxants. Malignant hyperthermia is an inherited autosomal dominant condition. Inheritance: autosomal dominant. (27 Sep 1997) |
| posttraumatic stress | A psychological disorder that develops in some individuals who have had major traumatic experiences (and, for example, have been in a serious accident or through a war). The person is typically numb at first but later has symptoms including depression, excessive irritability, guilt (for having survived while others died), recurrent nightmares, flashbacks to the traumatic scene, and overreactions to sudden noises. Posttraumatic stress became known in the 70s due to the adjustment problems of some vietnam veterans. It was listed as a diagnostic category by the american psychiatric association in 1980. Although the name post-traumatic stress was new, the condition was not. It was known as shell shock in world war i and battle fatigue during world war II. (12 Dec 1998) |
| posttraumatic stress disorder | Development of characteristic symptoms following a psychologically traumatic event that is generally outside the range of usual human experience; symptoms include numbed responsiveness to environmental stimuli, a variety of autonomic and cognitive dysfunctions, and dysphoria. (05 Mar 2000) |
| posttraumatic stress syndrome | <syndrome> A disorder appearing after a physically or psychologically traumatic event outside the range of usual human experience, (e.g., a serious threat to one's life or seeing a loved one killed), characterised by symptoms of re-experiencing the event, numbing of responsiveness to the environment, exaggerated startle response, guilt feelings, impairment of memory, and difficulties in concentration and sleep. (05 Mar 2000) |
| heat stress disorder | A group of conditions due to overexposure to or overexertion in excess environmental temperature. It includes heat cramps, which are non-emergent and treated by salt replacement; heat exhaustion, which is more serious, treated with fluid and salt replacement; and heatstroke, a condition most commonly affecting extremes of age, especially the elderly, accompanied by convulsions, delusions, or coma and treated with cooling the body and replacement of fluids and salts. (12 Dec 1998) |
| shear stress | The force acting in shear flow expressed per unit area; units in the CGS system: dynes/cm2. (05 Mar 2000) |
| stress | 1. Forcibly exerted influence, pressure. In dentistry, the pressure of the upper teeth against the lower in mastication. 2. The sum of the biological reactions to any adverse stimulus, physical, mental or emotional, internal or external, that tends to disturb the organisms homeostasis, should these compensating reactions be inadequate or inappropriate, they may lead to disorders. The term is also used to refer to the stimuli that elicit the reactions. (18 Nov 1997) |