| DRF | Daily Rating Form; daily replacement factor; Deafness Research Foundation; dose reduction factor |
|---|---|
| DVR | digital vascular reactivity; Doctor of Veterinary Radiology; double valve replacement; double ventri... |
| EARR | extended aortic root replacement |
| ERT | esophageal radionuclide transit; estrogen replacement therapy; examination room terminal; external r... |
| FRAME | Fund for the Replacement of Animals in Medical Experiments |
| total catecholamine test | A fluorometric determination of catecholamines in 24-hr urine specimens; elevated values are seen in patients with pheochromocytoma and neuroblastoma; spurious elevations may be seen due to excretion products of medication containing adrenaline, tetracyclines, quinidine, and some antihypertensive agents; false-positive elevations may be seen in persons with extensive burns, in vigorous exercise, or in progressive muscular dystrophy. (05 Mar 2000) |
|---|---|
| total cell count | Number of cells in a given area or volume. (05 Mar 2000) |
| total cholesterol | A combination of the LDL, HDL and VLDL levels in the bloodstream. This is the cholesterol measurement that is given by the standard home cholesterol test kit. Less than 200 is desirable, 200 to 239 is considered borderline high, over 240 is considered high. (27 Sep 1997) |
| total cleavage | Cleavage in which the blastomeres are completely separated; the entire egg participates in cell division. Synonym: complete cleavage, total cleavage. (05 Mar 2000) |
| total cystectomy | Removal of the entire bladder. (05 Mar 2000) |
| total dissolved solids | A measure of inorganic and organic materials dissolved in water (passing through a 0.45 micron filter), expressed as mg/l FR. Sometimes considered similar to conductivity as an indicator of potential production in habitat quality indices. (09 Oct 1997) |
| total elasticity of muscle | The combined effect of physical and physiologic elasticity of muscle. (05 Mar 2000) |
| total end-diastolic diameter | Cross sectional diameter of the left ventricle including the septum and posterior wall thicknesses in diastole. (05 Mar 2000) |
| total end-systolic diameter | Cross sectional diameter of the left ventricle including the septum and posterior wall thicknesses in systole. (05 Mar 2000) |
| total energy | The sum of kinetic and potential energy's. (05 Mar 2000) |
| total facial index | Length is measured from the nasion to the mental tubercle: (nasimental length × 100)/bizygomatic width. (05 Mar 2000) |
| total fertility rate | <epidemiology> The number of children an average women would have assuming that she lives her full reproductive lifetime. (05 Dec 1998) |
| total haematuria | Uniform mixing of blood in the entire voided urine, commonly indicating an upper or mid-urinary tract source of bleeding. (05 Mar 2000) |
| total hyperopia | That which can be determined after complete paralysis of accommodation by means of a cycloplegic. (05 Mar 2000) |
| total hysterectomy | Complete surgical removal of the uterus and cervix. Also called a complete hysterectomy. (12 Dec 1998) |