| occl | occlusion, occlusive |
|---|---|
| OT | objective test; oblique talus; occlusion time; occupational therapist, occupational therapy; ocular ... |
| PICSO | pressure-controlled intermittent coronary sinus occlusion |
| VOP | venous occlusion plethysmography |
| TOF | 1) Tetralogy Of Fallot ? CIx of Corrective Op ... |
| central pneumonia | A form of pneumonia in which exudation is confined for a time to the central portion of a lobe or the hilar region. Synonym: core pneumonia. (05 Mar 2000) |
|---|---|
| central pontine myelinolysis | <neurology> A condition characterised by damage to the myelin (sheath) layer of nerve cells in the pons (brainstem). The destruction of myelin inhibits the conduction of a nerve impulse along a nerve cell. The most common cause for exacerbating this condition is a rapid correction of hyponatraemia (low blood sodium level). Some conditions such as Wernicke-Korsakoff syndrome and alcoholism can predispose to loss of myelin. Symptoms can include weakness, double vision, muscle spasms, speech difficulty, delirium, sleepiness, hallucinations, tremors and uncontrolled eye movements. An MRI scan of the brain can demonstrate the abnormality. A more slow controlled correction of serum sodium levels is necessary in these patients. There is no definitive treatment for the underlying disorder. (12 Jan 1998) |
| central Recklinghausen's disease type II | type 1 neurofibromatosis |
| central scotoma | A scotoma involving the fixation point. (05 Mar 2000) |
| central serous choroidopathy | Detachment of the sensory retina induced by decreased adhesion between cells of the retinal pigment epithelium which permits plasma from the choriocapillaris to enter subretinal space. Synonym: central angiospastic retinopathy, central serous retinopathy. (05 Mar 2000) |
| central serous retinopathy | Detachment of the sensory retina induced by decreased adhesion between cells of the retinal pigment epithelium which permits plasma from the choriocapillaris to enter subretinal space. Synonym: central angiospastic retinopathy, central serous retinopathy. (05 Mar 2000) |
| central sleep apnoea | <neurology> A form of sleep apnoea which from the lack of neurologic stimulation to breathe. (12 Jan 1998) |
| central spindle | A central group of microtubules (continuous fibres) that course uninterrupted, between the asters, in contrast to the microtubules attached to the individual chromosomes (s. Fibres). (05 Mar 2000) |
| central stop | <microscopy> An opaque disk placed in the ring carrier or diaphragm carrier of the substage apparatus. It excludes the central rays and is used for dark field work at low magnification. Variable stops can be contracted or expanded as desired. (05 Aug 1998) |
| central sulcus | A double-S-shaped fissure extending obliquely upward and backward on the lateral surface of each cerebral hemisphere at the boundary between frontal and parietal lobes. Synonym: sulcus centralis, fissure of Rolando. (05 Mar 2000) |
| central supply, hospital | Hospital department responsible for receiving, storing, and distributing medical and surgical supplies and equipment. (12 Dec 1998) |
| central tegmental fasciculus | A large fibre bundle passing longitudinally through the central mesencephalic and pontine tegmentum, distinguished from adjacent longitudinal groups of fibre-fascicles of the reticular formation by a more compact composition. In transverse sections of the mesencephalon the bundle occupies a large triangular area lateral to the medial longitudinal fasciculus; farther caudally it expands ventralward and finally passes over the lateral side of the (inferior) olivary nucleus, becoming part of the latter's fibre capsule. The bundle contains fibres from the mesencephalic tegmentum and regions surrounding the central gray substance descending to the olivary nucleus; it also includes numerous fibres ascending from the medullary, pontine, and mesencephalic reticular formation to the thalamus and subthalamus region. Synonym: tractus tegmentalis centralis, central tegmental fasciculus, tractus centralis tegmenti. (05 Mar 2000) |
| central tegmental tract | A large fibre bundle passing longitudinally through the central mesencephalic and pontine tegmentum, distinguished from adjacent longitudinal groups of fibre-fascicles of the reticular formation by a more compact composition. In transverse sections of the mesencephalon the bundle occupies a large triangular area lateral to the medial longitudinal fasciculus; farther caudally it expands ventralward and finally passes over the lateral side of the (inferior) olivary nucleus, becoming part of the latter's fibre capsule. The bundle contains fibres from the mesencephalic tegmentum and regions surrounding the central gray substance descending to the olivary nucleus; it also includes numerous fibres ascending from the medullary, pontine, and mesencephalic reticular formation to the thalamus and subthalamus region. Synonym: tractus tegmentalis centralis, central tegmental fasciculus, tractus centralis tegmenti. (05 Mar 2000) |
| central tendon of diaphragm | A three-lobed fibrous sheet occupying the centre of the diaphragm. Synonym: centrum tendineum diaphragmatis, trefoil tendon. Central tendon of perineum, the fibromuscular mass between the anal canal and the urogenital diaphragm in the median plane; midline episiotomies extend into this structure. Synonym: centrum tendineum perinei, perineal body, Savage's perineal body. (05 Mar 2000) |
| central terminal electrode | In electrocardiography, an electrode in which connections from the three limbs (right arm, left arm, and left leg) are joined and led to the electrocardiograph to form the indifferent electrode, theoretically at zero potential for the system. (05 Mar 2000) |