< English dictionary of medical terms (42)

English dictionary of medical terms (42)

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No:820 - hypogonadism: a condition resulting from or characterized by abnormally decreased functional activity of the gonads, with retardation of growth and sexual development.
No:821 - hypokalaemia: abnormally low potassium concentration in the blood; it may result from potassium loss by renal secretion or by the gastrointestinal route, as by vomiting or diarrhoea. It may be manifested clinically by neuromuscular disorders ranging from weakness to paralysis, by electrocardiographic abnormalities (depression of the T wave and elevation of the U wave), by renal disease, and by gastrointestinal disorders.
No:822 - hypomania: (hypo- + Gr. mania madness) an abnormality of mood resembling mania (persistent elevated or expansive mood, hyperactivity, inflated self-esteem, etc.) but of lesser intensity.
No:823 - hypophyseal: hypophysial.
No:824 - hypoplasia: (hypo- + Gr. plasis formation + -ia) incomplete development or underdevelopment of an organ or tissue.
No:825 - hypotension: abnormally low blood pressure; seen in shock but not necessarily indicative of it.
No:826 - hypotensive: characterized by or causing diminished tension or pressure, as abnormally low blood pressure.
No:827 - hypothalamic: of or involving the hypothalamus.
No:828 - hypothermia: (hypo- + Gr. therm heat + -ia) a low body temperature, as that due to exposure in cold weather or a state of low temperature of the body induced as a means of decreasing metabolism of tissues and thereby the need for oxygen, as used in various surgical procedures, especially on the heart, or in an excised organ being preserved for transplantation.
No:829 - hypothesis: a supposition that appears to explain a group of phenomena and is advanced as a basis for further investigation; a proposition that is subject to proof or to an experimental or statistical test.
No:830 - hypothyroidism: deficiency of thyroid activity. In adults, it is most common in women and is characterized by decrease in basal metabolic rate, tiredness and lethargy, sensitivity to cold, and menstrual disturbances. If untreated, it progresses to full-blown myxoedema. In infants, severe hypothyroidism leads to cretinism. In juveniles, the manifestations are intermediate, with less severe mental and developmental retardation and only mild symptoms of the adult form. When due to pituitary deficiency of thyrotropin secretion it is called secondary hypothyroidism.
No:831 - hypotonia: (hypo- + Gr. tonos tone + -ia) a condition of diminished tone of the skeletal muscles; diminished resistance of muscles to passive stretching.
No:832 - hypotrophy: (hypo- + Gr. troph nutrition) abiotrophy.
No:833 - hypouricaemia: deficiency of uric acid in the blood, along with xanthinuria, due to deficiency of xanthine oxidase, the enzyme required for conversion of hypoxanthine to xanthine and of xanthine to uric acid.
No:834 - hypoventilation: a state in which there is a reduced amount of air entering the pulmonary alveoli.
No:835 - hypovitaminosis: a condition due to a deficiency of one or more essential vitamins.
No:836 - hypovolaemia: (hypo- + volume + Gr. haima blood + -ia) abnormally decreased volume of circulating fluid (plasma) in the body.
No:837 - hypoxemia: (hypo- + oxygen + Gr. haima blood + -ia) deficient oxygenation of the blood; hypoxia.
No:838 - hypoxia: reduction of oxygen supply to tissue below physiological levels despite adequate perfusion of the tissue by blood. Cf. anoxia.
No:839 - hysterectomy: (hystero- + Gr. ektom excision) the operation of excising the uterus, performed either through the abdominal wall (abdominal h.) or through the vagina (vaginal h.)

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