| birth palsy | Indefinite term for any motor abnormality in the infant caused by or attributed to the birthing process; includes obstetrical paralysis, infantile hemiplegia, etc. Synonym: infantile hemiplegia. (05 Mar 2000) |
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| birth rate | The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the United States, 16.9 in Australia, etc. (12 Dec 1998) |
| birth trauma | Physical injury to an infant during its delivery, the supposed emotional injury, inflicted by events incident to birth, upon an infant which allegedly appears in symbolic form in patients with mental illness. Trauma from occlusion, a reversible lesion in the periodontium caused by excessive movement of teeth. Occlusal trauma, abnormal occlusal stresses capable of producing or which have produced pathologic changes in the tooth and its surrounding structures. Psychic trauma, an upsetting experience precipitating or aggravating an emotional or mental disorder. (05 Mar 2000) |
| brachial birth palsy | Paralysis of the infant's arm due to injury received at birth usually resulting from a shoulder dystocia; three types are recognised: 1) whole arm; 2) upper arm (Erb's p.); 3) forearm (Klumpke's paralysis). (05 Mar 2000) |
| vaginal birth after cesarean | Delivery of an infant through the vagina in a female who has had a prior cesarean section. (12 Dec 1998) |
| vaginal birth after cesarian section | It was once the rule that after a c-section, the next delivery also had to be by c-section. Now vaginal delivery after cesarian section (vbac) is frequently feasible. See: vbac. (12 Dec 1998) |
| rate, birth | The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the united states, 16.9 in Australia, etc. (12 Dec 1998) |
| cesarian section, vaginal birth after | It was once the rule that after a C-section, the next delivery also had to be by C-section. Now vaginal delivery after Cesarian section (VBAC) is frequently feasible. (12 Dec 1998) |
| multiple birth offspring | The offspring in multiple pregnancies (pregnancy, multiple): twins, triplets, quadruplets, quintuplets, etc. (12 Dec 1998) |
| crude birth rate | <epidemiology> The number of live births in a year divided by the population size. (05 Dec 1998) |
| adrenal weight factor | A postulated substance of adenohypophysial origin responsible for maintenance of the weight of the adrenal cortex. (05 Mar 2000) |
| apothecaries' weight | An obsolescent system of weights based upon the weight of a grain of wheat. Has been used for centuries in weighing medicines and precious metals (Troy measure). Some drugs which have been available for long periods are still often designated as grains (e.g., 5 grains of aspirin, 1/2 grain of codeine, 1/100 grain nitroglycerin). This weight system has been largely superseded by the metric system (based on grams). One grain is the equivalent of 64.8 milligrams. One scruple contains 20 grains; one dram contains 60 grains; one apothecary ounce contains 8 drams (480 grains); one apothecary pound contains 12 ounces (5760 grains). (05 Mar 2000) |
| atomic weight | <chemistry> The average weight of an atom of an element, i.e. The total mass of protons and neutrons in an atom. (09 Oct 1997) |
| body-weight ratio | Body weight (in grams) divided by stature (in centimeters). (05 Mar 2000) |
| gram-atomic weight | Atomic weight expressed in grams. Compare: mole. (05 Mar 2000) |