| sternal notch | The V shaped notch at the top of the breastbone (sternum). (12 Dec 1998) |
|---|---|
| sternal part of diaphragm | The small slip on each side that arises from the inner surface of the xiphoid process and inserts on the central tendon. Synonym: pars sternalis diaphragmatis. (05 Mar 2000) |
| sternal plane | A plane indicated by the front surface of the sternum. Synonym: planum sternale. (05 Mar 2000) |
| sternal puncture | Removal of bone marrow from the manubrium by needle. (05 Mar 2000) |
| sternal synchondroses | The cartilaginous junctions between the body of the sternum and the manubrium, and the xiphoid process; in domestic animals, there may be several, e.g., synchondrosis manubriosternalis, synchondrosis intersternebralis, and synchondrosis xiphosternalis. Synonym: synchondroses sternales, sternal joints. (05 Mar 2000) |
| acute compression triad | The rising venous pressure, falling arterial pressure, and decreased heart sounds of pericardial tamponade. Synonym: Beck's triad. (05 Mar 2000) |
| acute spinal cord compression | <radiology> Signs and symptoms of cord compression show progression within 24 hours or less: pain, weakness, autonomic dysfunction, sensory loss, ataxia Diagnostic considerations: Primary or secondary malignancy of epidural space or vertebrae, Trauma, Inflammatory process, Osteoarthritis REF: MacNeil BJ, Abrams HL. Brigham and Women's Hospital Handbook of Diagnostic Imaging. Chapter 35. (12 Dec 1998) |
| adiabatic compression | <radiobiology> Compression (of a gas, plasma, etc.) not accompanied by gain or loss of heat from outside the system. For a plasma in a magnetic field, a compression slow enough that the magnetic moment and other adiabatic invariants of the plasma particles may be taken as constant. (09 Oct 1997) |
| cerebral compression | Pressure upon the intracranial tissues by an effusion of blood or cerebrospinal fluid, an abscess, a neoplasm, a depressed fracture of the skull, or an oedema of the brain. Synonym: compression of brain. (05 Mar 2000) |
| cervical compression syndrome | <syndrome> Pain, paresthesias, and sometimes weakness in the area of the distribution of one or more cervical roots, due to pressure of a protruded cervical intervertebral disc. Synonym: cervical compression syndrome. (05 Mar 2000) |
| compression | Increasing physical pressure on a (vital) structure. (16 Dec 1997) |
| compression anaesthesia | Loss of sensation produced by pressure applied to a nerve. Synonym: compression anaesthesia. (05 Mar 2000) |
| compression fracture | <orthopaedics> A spinal fracture, more specifically, of a vertebral body, that results from the axial compression of the vertebra. Compression fractions result in a loss of height of the vertebral body on X-ray. May occur in any region of the spine. Compression fractures occur commonly in post-menopausal females who subject to osteoporosis. (05 Jan 1998) |
| compression molding | The act of pressing or squeezing together to form a shape in a mold, the adaptation of a plastic material to the negative form of a split mold by pressure. See: injection molding. (05 Mar 2000) |
| compression neuropathy | A focal nerve lesion produced when sustained pressure is applied to a localised portion of the nerve, either from an external or internal source; the main source of injury is the pressure differential that exists between one portion of the nerve and another. (05 Mar 2000) |