| neonatal tetany | Hypocalcaemic tetany occurring in neonates or young infants, due to transient functional hypoparathyroidism in consumption of cow's milk (high phosphorus content). Synonym: myotonia neonatorum, tetania neonatorum, tetanism. (05 Mar 2000) |
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| neonatal tooth | A tooth erupting up to 30 days after birth. (05 Mar 2000) |
| intensive care, neonatal | Continuous care and monitoring of newborn infants with life-threatening conditions, in any setting. (12 Dec 1998) |
| intensive care units, neonatal | Hospital units providing continuing surveillance and care to acutely ill newborn infants. (12 Dec 1998) |
| isoimmune neonatal thrombocytopenia | Immune thrombocytopenia resulting from maternal-foetal platelet incompatibility. (05 Mar 2000) |
| early neonatal death | Death of a liveborn infant occurring less than 7 completed days (168 hours) from the time of birth, late neonatal death, death of a liveborn infant occurring after 7 completed days of age but before 28 completed days. (05 Mar 2000) |
| jaundice, neonatal | The jaundice sometimes seen in newborn infants. It is also called icterus neonatorum. (12 Dec 1998) |
| abdominal ring | The opening in the transversalis fascia through which the ductus deferens (or round ligament in the female) and gonadal vessels enter the inguinal canal. Located midway between anterior superior iliac spine and pubic tubercle, it is bounded medially by the lateral umbilical ligament (inferior epigastric vessels) and inferiorly by the inguinal ligament. Indirect inguinal hernias exit the abdominal cavity via the deep inguinal ring Synonym: annulus inguinalis profundus, abdominal ring, annulus abdominalis, internal inguinal ring. (05 Mar 2000) |
| amnion ring | The ring formed by the attachment of the amnion to the umbilical cord at its point of emergence from the umbilicus. (05 Mar 2000) |
| annuloplasty ring | The dilated annulus is sutured, often to a prosthetic ring, thereby reducing it to its normal systolic size. (05 Mar 2000) |
| anterior limiting ring | The periphery of the cornea marking the termination of Descemet's membrane and the anterior border of the trabecular meshwork; an important landmark in gonioscopy. Synonym: Schwalbe's ring. (05 Mar 2000) |
| Balbani ring | An extremely large puff at a band of a polytene chromosome. (05 Mar 2000) |
| Balbiani ring | <cell biology, genetics> The largest puffs seen on the polytene chromosomes of Diptera are called Balbiani rings after the nineteenth century microscopist who first described polytene chromosomes. (18 Nov 1997) |
| Bandl's ring | A constriction located at the junction of the thinned lower uterine segment with the thick retracted upper uterine segment, resulting from obstructed labour; this is one of the classic signs of threatened rupture of the uterus. Synonym: Bandl's ring, Baudelocque's uterine circle, Scanzoni's second os. (05 Mar 2000) |
| benzene ring | The closed-chain arrangement of the carbon and hydrogen atoms in the benzene molecule. See: cyclic compound. (05 Mar 2000) |