| BH | base hospital; benzalkonium and heparin; bill of health; birth history; Bishop-Harman [instruments];... |
|---|---|
| HPS | Hantavirus pulmonary syndrome; hematoxylin, phloxin, and saffron; Hermansky-Pudlak syndrome; high-pr... |
| PST | pancreatic suppression test; paroxysmal supraventricular tachycardia; penicillin, streptomycin, and ... |
| FOOSH | fell onto [his or her] outstretched hand |
| HB | health board; heart block; heel to buttock; held back; hemoglobin; hepatitis B; His bundle; hold bre... |
| sampling studies | Studies in which a number of subjects are selected from all subjects in a defined population. Conclusions based on sample results may be attributed only to the population sampled. (12 Dec 1998) |
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| prospective studies | Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. (12 Dec 1998) |
| his | 1. Belonging or pertaining to him; used as a pronominal adjective or adjective pronoun; as, tell John his papers are ready; formerly used also for its, but this use is now obsolete. "No comfortable star did lend his light." (Shak) "Who can impress the forest, bid the tree Unfix his earth-bound root?" (Shak) Also formerly used in connection with a noun simply as a sign of the possessive. "The king his son." Shak. "By young Telemachus his blooming years." Pope. This his is probably a corruption of the old possessive ending -is or -es, which, being written as a separate word, was at length confounded with the pronoun his. 2. The possessive of he; as, the book is his. "The sea is his, and he made it." Origin: AS. His of him, his, gen. Masc. & neut. Of h, neut. Hit. See He. Source: Websters Dictionary (01 Mar 1998) |
| His' band | The bundle of modified cardiac muscle fibres that begins at the atrioventricular node as the trunk of the atrioventricular bundle and passes through the right atrioventricular fibrous ring to the membranous part of the interventricular septum where the trunk divides into two branches, the right crus of the atrioventricular bundle and the left crus of the atrioventricular bundle; the two crura ramify in the subendocardium of their respective ventricles. Synonym: fasciculus atrioventricularis, atrioventricular band, Gaskell's bridge, His' band, His' bundle, bundle of His, Keith's bundle, Kent's bundle, Kent-His bundle, ventriculonector. (05 Mar 2000) |
| His bundle electrogram | An electrogram recorded from the His bundle, either in the experimental animal or in man during cardiac catheterization. (05 Mar 2000) |
| his bundle electrography | <investigation> This test studies the electrical activity of the bundle of HIS. The bundle of HIS is a group of electrical fibres in the heart that are responsible for transmitting the electrical impulses which generate a normal cardiac contraction. This test may be performed in cases of cardiac arrhythmias, to locate a specific area responsible for a conduction defect and to determine the need for cardiac pacemaker placement. The test involves the passage of a an electrode tipped catheter into the heart. This catheter is usually threaded through a neck, arm or chest vein. Measurements of the HIS bundle can then be performed while standard ECG leads are placed on the arms and legs. This test carries a small risk of bleeding, arrhythmias, embolism, heart attack and stroke. It is performed by a specially trained cardiologist. (27 Sep 1997) |
| His' copula | <anatomy> A median elevation in the floor of the embryonic pharynx caudal to the tuberculum impar. It merges laterally with the ventral part of the second and third branchial arches, and in later development is incorporated in the root of the tongue. Synonym: copula linguae, His' copula. (05 Mar 2000) |
| His' line | A line extending from the tip of the anterior nasal spine (acanthion) to the hindmost point on the posterior margin of the foramen magnum (opisthion), dividing the face into an upper and a lower, or dental part. (05 Mar 2000) |
| his operon | <molecular biology> An operon which governs the synthesis of the amino acid histidine out of ATP and phosphoribosyl pyrophosphate. The his operon was first observed in and described for the bacteria Salmonella typhinurium. (09 Oct 1997) |
| His' perivascular space | A tunnel-like extension of the subarachnoid space surrounding blood vessels that pass into the brain or spinal cord from the subarachnoid space; the lining of the channel is composed of pia and glial feet of astrocytes; a continuation of the space around capillaries and nerve cells probably does not occur. Synonym: His' perivascular space. (05 Mar 2000) |
| His' rule | The duration of pregnancy is calculated from the first day of the first omitted menstrual period; obsolete. (05 Mar 2000) |
| His' spindle | A fusiform dilation of the aorta immediately beyond the isthmus. Synonym: His' spindle. (05 Mar 2000) |
| His-Tawara system | The complex system of interlacing Purkinje fibres within the ventricular myocardium. See: conducting system of heart. (05 Mar 2000) |
| His, Wilhelm Jr | <person> German physician, 1863-1934. See: His' band, His' bundle, His bundle electrogram, His' spindle, Kent-His bundle, His-Tawara system. (05 Mar 2000) |
| His, Wilhelm Sr | <person> Swiss anatomist and embryologist in Germany, 1831-1904. See: His' copula, His' line, His' rule, His' perivascular space, isthmus of His. (05 Mar 2000) |