| AV | Adriamycin and vincristine; air velocity; allergic vasculitis; anteroventral; anteversion; anticipat... |
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| IMV | inferior mesenteric vein; intermittent mandatory ventilation; intermittent mechanical ventilation; i... |
| MEV | maximum exercise ventilation; mevalonate; minimal excursionary ventilation; murine erythroblastosis ... |
| SIMV | synchronized intermittent mandatory ventilation; synchronized intermittent mechanical ventilation |
| Vd/Vt | dead space ventilation/total ventilation [ratio] |
| tubal pregnancy | <obstetrics> An ectopic pregnancy that involves the development of the embryo within the fallopian tube. This can result in a surgical emergency when the developing embryo reaches a critical size. (27 Sep 1997) |
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| tubal prominence | A ridge in the naso-pharyngeal wall posterior to the opening of the auditory (eustachian) tube, caused by the projection of the cartilaginous portion of this tube. Synonym: eustachian cushion, tubal prominence. (05 Mar 2000) |
| tubal tonsil | A collection of lymphoid nodules near the pharyngeal opening of the auditory tube. Synonym: tonsilla tubaria, eustachian tonsil, Gerlach's tonsil. (05 Mar 2000) |
| alveolar ventilation | The volume of gas expired from the alveoli to the outside of the body per minute; calculated as the respiratory frequency (f) multiplied by the difference between tidal volume and the dead space (VT -VD); units: ml/min BTPS. (05 Mar 2000) |
| artificial ventilation | Application of mechanically or manually generated pressures, usually positive, to gas(es) in or about the airway as a means of producing gas exchange between the lungs and surrounding atmosphere. Synonym: artificial respiration. (05 Mar 2000) |
| assist-control ventilation | Artificial respiration in which inspiration is produced automatically after a set interval if the person has not already begun to inspire. Compare: assisted ventilation, controlled ventilation. (05 Mar 2000) |
| assisted mechanical ventilation | <anaesthetics> The use of a mechanical device to fill the lungs with oxygenated air then allow time for passive exhalation. (27 Sep 1997) |
| assisted ventilation | Application of mechanically or manually generated positive pressure to gas(es) in or about the airway during inhalation as a means of augmenting movement of gases into the lungs. Synonym: assisted respiration. (05 Mar 2000) |
| manual ventilation | Intermittent manual compression of a gas-filled reservoir bag to force gases into a patient's lungs and thus maintain oxygenation and carbon dioxide elimination during apnea or hypoventilation. (05 Mar 2000) |
| ventilation | 1. In respiratory physiology, the process of exchange of air between the lungs and the ambient air. Pulmonary ventilation (usually measured in litres per minute) refers to the total exchange, whereas alveolar ventilation refers to the effective ventilation of the alveoli, in which gas exchange with the blood takes place. 2. In psychiatry, verbalisation of one's emotional problems. Origin: L. Ventilatio (18 Nov 1997) |
| ventilation meter | A meter used to measure tidal and minute ventilatory volumes. (05 Mar 2000) |
| ventilation/perfusion lung imaging | <radiology> See: ventilation agents, perfusion agents, Biello-Siegel criteria (12 Dec 1998) |
| ventilation/perfusion mismatch | An imbalance between alveolar ventilation and pulmonary capillary blood flow. (05 Mar 2000) |
| ventilation-perfusion ratio | The ratio of alveolar ventilation to simultaneous alveolar capillary blood flow in any part of the lung. (12 Dec 1998) |
| ventilation/perfusion ratio | The ratio of alveolar ventilation to simultaneous alveolar capillary blood flow in any part of the lung; because both ventilation and perfusion are expressed per unit volume of tissue and per unit time, which cancel, the units become liters of gas per liter of blood. (05 Mar 2000) |