| Vd | voided, voiding; volume dead space; volume of distribution |
|---|---|
| VP | physiological volume; vapor pressure; variegate porphyria; vascular permeability; vasopressin; velop... |
| VPC | vapor-phase chromatography; ventricular premature complex; ventricular premature contraction; volume... |
| v/v | percent volume in volume |
| W/V, | w/v percent weight in volume, weight/volume |
| respiratory pause | Cessation of air flow for less than 10 seconds. See: sleep apnea. (05 Mar 2000) |
|---|---|
| respiratory physiology | Functions and activities of the respiratory tract as a whole or of any of its parts. (12 Dec 1998) |
| respiratory pigments | The oxygen-carrying (coloured) substances in blood and tissues (haemoglobin, myoglobin, haemocyanin, etc.). (05 Mar 2000) |
| respiratory poison | A compound that inhibits the respiratory chain. Synonym: respiratory poison. (05 Mar 2000) |
| respiratory protective devices | Respirators to protect individuals from breathing air contaminated with harmful dusts, fogs, fumes, mists, gases, smokes, sprays, or vapors. (12 Dec 1998) |
| respiratory pulse | Waxing and waning of any pulsation produced by respiration. (05 Mar 2000) |
| respiratory quotient | <physiology> Molar ratio of carbon dioxide production to oxygen consumption. (18 Nov 1997) |
| respiratory rate | The number of breaths per minute (or, more formally, the number of movements indicative of inspiration and expiration per unit time). In practice, the respiratory rate is usually determined by counting the number of times the chest rises (or falls) per minute. By whatever means, the aim is to determine if the respirations are normal, abnormally fast (tachypnea), abnormally slow (technically termed bradypnea), or nonexistent (apnea). (12 Dec 1998) |
| respiratory region of tunica mucosa of nose | The area commencing at the vestibule of the nose lined with respiratory mucosa; with the exception of the olfactory mucusa, it includes the entire nasal cavity. Synonym: regio respiratoria tunicae mucosae nasi, respiratory region of tunica mucosa of nose. (05 Mar 2000) |
| respiratory scleroma | Rhinoscleroma in which the lesion involves the mucous membrane of the greater part or all of the upper respiratory tract. (05 Mar 2000) |
| respiratory sound | A murmur, bruit, fremitus, rhonchus, or rale heard on auscultation over the lungs or any part of the respiratory tract. (05 Mar 2000) |
| respiratory sounds | Any sound emanating from any portion of the respiratory tract, especially those heard on auscultation; includes breath sounds. (12 Dec 1998) |
| respiratory syncytial virus | <virology> This RNA virus is a member of the Paramyxoviridae family and is a major pathogen in the upper and lower respiratory tract in both infants and younger children. Respiratory syncytial virus manifestations include bronchiolitis, pneumonia and croup. Acronym: RSV (27 Sep 1997) |
| respiratory syncytial virus, bovine | A species of pneumovirus causing an important respiratory infection in cattle. Symptoms include fever, conjunctivitis, and respiratory distress. (12 Dec 1998) |
| respiratory syncytial viruses | A group of viruses in the pneumovirus genus causing respiratory infections in various mammals. Humans and cattle are most affected but infections in goats and sheep have also been reported. (12 Dec 1998) |