| NAP | nasion, point A, pogonion [convexity or concavity of the facial profile]; nerve action potential; ne... |
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| NCS | National Collaborative Study; neocarcinostatin; nerve conduction study; newborn calf serum; no conce... |
| NCV | nerve conduction velocity; noncholera vibrio |
| NCVS | nerve conduction velocity study |
| NET | nasoendotracheal tube; nerve excitability test; neuroectodermal tumor; neuroendocrine tumor; norepin... |
| sensitivity and specificity | Measures for assessing the results of diagnostic and screening tests. Sensitivity represents the proportion of truly diseased persons in a screened population who are identified as being diseased by the test. It is a measure of the probability of correctly diagnosing a condition. Specificity is the proportion of truly nondiseased persons who are so identified by the screening test. It is a measure of the probability of correctly identifying a nondiseased person. (12 Dec 1998) |
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| hospital design and construction | The architecture, functional design, and construction of hospitals. (12 Dec 1998) |
| Hunter and Driffield curve | Sensitometric curve of radiographic film, a plot of the film density versus the logarithm of the relative exposure. Synonym: H and D curve, Hunter and Driffield curve. (05 Mar 2000) |
| sexual and gender disorders | Mental disorders related to sexual dysfunction, paraphillias, and gender identity disorders. (12 Dec 1998) |
| sheath of Key and Retzius | <anatomy> The delicate bands of connective tissue among nerve fibres. Origin: NL, fr. Gr. Within + a sinew, nerve. Source: Websters Dictionary (01 Mar 1998) |
| hydroxymethyl and formyl transferases | <enzyme> Enzymes that catalyze the transfer of hydroxymethyl or formyl groups. Registry number: EC 2.1.2 (12 Dec 1998) |
| short limbs and osteopenia | <radiology> Osteogenesis imperfecta, hypophosphatasia (12 Dec 1998) |
| signs and symptoms | Objective evidence of disease perceptible to the examining physician (sign) and subjective evidence of disease perceived by the patient (symptom). (12 Dec 1998) |
| signs and symptoms, digestive | Digestive system manifestations of diseases of the gastrointestinal system or of other organs. (12 Dec 1998) |
| signs and symptoms, respiratory | Respiratory system manifestations of diseases of the respiratory tract or of other organs. (12 Dec 1998) |
| skin and connective tissue diseases | A collective term for diseases of the skin and its appendages and of connective tissue. (12 Dec 1998) |
| hypoplasia of the thymus and parathyroids | Also known as the digeorge syndrome (dgs), this disorder is characterised by (1) low blood calcium levels (hypocalcaemia) due to underdevelopment (hypoplasia) of the parathyroid glands needed to control calcium; (2) underdevelopment (hypoplasia) of the thymus, an organ behind the breastbone in which lymphocytes mature and multiply; and (3) defects of the outflow tracts from the heart. most cases of dgs are due to a microdeletion in chromosome band 22q11.2. A small number of cases have defects in other chromosomes, notably 10p13. Named after the american paediatric endocrinologist angelo digeorge. Another name for dgs is the third and fourth pharyngeal pouch syndrome (since the faulty structures in dgs are embryologically derived from the third and fourth pharyngeal pouches). (12 Dec 1998) |
| slash, burn, and poison | Brutal medical slang term for surgery, radiation, and chemotherapy (as approaches to the treatment of cancer). (12 Dec 1998) |
| specialty chemicals and products | Chemicals and chemical products used in a research, industrial, or household setting. Included here are the specific drug preparations, as well as the substances involved in the manufacture and stabilization of pharmaceutical preparations and agricultural agents. (12 Dec 1998) |
| spike and wave complex | A generalised, synchronous pattern seen on the electroencephalogram, consisting of a sharply contoured fast wave followed by a slow wave; particularly found in patients with generalised epilepsies. Spike and wave complexes are often characterised by their frequency, e.g., s low spike and wave, fast spike and wave. (05 Mar 2000) |