| TAC | tachykinin; terminal antrum contraction; tetracaine, adrenalin, and cocaine; time-activity curve; to... |
|---|---|
| TAH | total abdominal hysterectomy; total artificial heart |
| TAN | total adenine nucleotide; total ammonia nitrogen |
| TBC | thyroxine-binding coagulin; total body calcium; total body clearance; tuberculosis |
| TBW | total body water; total body weight |
| parenteral nutrition, total | The delivery of nutrients for assimilation and utilization by a patient whose sole source of nutrients is via solutions administered intravenously, subcutaneously, or by some other non-alimentary route. The basic components of tpn solutions are protein hydrolysates or free amino acid mixtures, monosaccharides, and electrolytes. Components are selected for their ability to reverse catabolism, promote anabolism, and build structural proteins. (12 Dec 1998) |
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| reversal of organs, total | This condition (medically called situs inversus totalis) involves complete transposition (right to left reversal) of the thoracic and abdominal organs. The heart is not in its usual position in the left chest but is on the right. Specifically related to the heart, this is referred to as dextrocardia (literally, right-hearted). And the stomach, which is normally in the left upper abdomen, is on the right. In patients with situs inversus totalis, all of the chest and abdominal organs are reversed and appear in mirror image when examined or visualised by tests such as X-ray filming. Situs inversus totalis has been estimated to occur once in about 6-8,000 births. Situs inversus occurs in a rare abnormal condition that is present at birth (congenital) called kartagener's syndrome. (12 Dec 1998) |
| communication methods, total | Utilization of all available receptive and expressive modes for the purpose of achieving communication with the hearing impaired, such as gestures, postures, facial expression, types of voice, formal speech and non-speech systems, and simultaneous communication. (12 Dec 1998) |
| congenital total lipodystrophy | Lipodystrophy characterised by almost complete lack of subcutaneous fat, accelerated rate of growth and skeletal development during the first 3 to 4 years of life, muscular hypertrophy, cardiac enlargement, hepatosplenomegaly, hypertrichosis, renal enlargement, hypertriglyceridemia, and hypermetabolism; both autosomal dominant and X-linked varieties exist. (05 Mar 2000) |
| hysterectomy, total | Complete surgical removal of the uterus and cervix. Also called a complete hysterectomy. (12 Dec 1998) |
| near-total thyroidectomy | Removal of nearly all of each thyroid lobe leaving unresected only a small portion of gland adjacent to the entrance of the recurrent laryngeal nerve into the larynx. (05 Mar 2000) |
| total | Whole; not divided; entire; full; complete; absolute; as, a total departure from the evidence; a total loss. " Total darkness." "To undergo myself the total crime." Total abstinence. See Abstinence. Total depravity. See Original sin, under Original. Synonym: Whole; entire; complete. See Whole. Origin: F, fr. LL. Totalis, fr. L. Tolus all,whole. Cf. Factotum, Surtout, Teetotum. Source: Websters Dictionary (01 Mar 1998) |
| total anomalous pulmonary venous return | <radiology> (TAPVR) admixture lesion: cyanosis, increased pulmonary blood flow, must have L to R shunt for survival (e.g., atrial septal defect) associated with, atrial septal defect, asplenia (12 Dec 1998) |
| total aphasia | In which all aspects of speech and communication are severely impaired. at best, patients can understand or speak only a few words or phrases; they cannot read or write. Synonym: mixed aphasia, total aphasia. (05 Mar 2000) |
| total ascertainment | Method by which all members of a population at risk of a trait are discerned or equally likely to be contained in a sample thereof. (05 Mar 2000) |
| total body hypothermia | The deliberate reduction of total body temperature, in order to reduce tissue metabolism. (05 Mar 2000) |
| total body irradiation | Radiotherapy often given in several doses prior to bone marrow transplantation with the aim of killing any residual leukaemia in the patient. It is used in conjunction with high-dose anti-cancer drugs. The procedure and its side-effects will be discussed individually with the patient. (13 Nov 1997) |
| total body water | The sum of intracellular water and extracellular water (volume). About 60% of body weight. (05 Mar 2000) |
| total breech extraction | Delivery of a foetus in breech presentation with complete extraction of the entire foetal body from the uterus. (05 Mar 2000) |
| total cataract | A cataract involving the entire lens. (05 Mar 2000) |