| pulmonary bulla | An air-filled blister on the surface of the lung, a similar abnormality within the lung presenting as a thin-walled cavity. (05 Mar 2000) |
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| pulmonary capillary wedge pressure | The pressure obtained when a catheter is passed from the right side of the heart into the pulmonary artery as far as it will go and "wedged" into an end artery. PCWP is measured by letting pulmonary blood flow guide a balloon-flotation catheter into a small pulmonary end artery. The pressure distal to the wedged catheter is an approximation of cardiac left atrial pressure. The pressure recorded with the balloon deflated is pulmonary artery pressure. (05 Mar 2000) |
| pulmonary cavity | The portion of the thoracic cavity lying on either side of the mediastinum and occupied by a lung; the space existing when a lung is removed. (05 Mar 2000) |
| pulmonary circulation | The circulation of blood through the lungs. (12 Dec 1998) |
| pulmonary cirrhosis | Fibrosis of the lungs; usually interstitial pulmonary fibrosis. (05 Mar 2000) |
| pulmonary collapse | Secondary atelectasis due to bronchial obstruction, pleural effusion or pneumothorax, cardiac hypertrophy, or enlargement of other structures adjacent to the lungs. (05 Mar 2000) |
| pulmonary cone | The left or anterosuperior, smooth-walled portion of the cavity of the right ventricle of the heart, which begins at the supraventricular crest and terminates in the pulmonary trunk. Synonym: arterial cone, pulmonary cone, pulmonary conus. (05 Mar 2000) |
| pulmonary conus | The left or anterosuperior, smooth-walled portion of the cavity of the right ventricle of the heart, which begins at the supraventricular crest and terminates in the pulmonary trunk. Synonym: arterial cone, pulmonary cone, pulmonary conus. (05 Mar 2000) |
| pulmonary diffusing capacity | The ability of the alveolocapillary membrane to transfer gas. This is a reflection of the thinness and area of the alveolocapillary membrane. The diffusing capacity is a measure of the amount of gas transferred per minute from the alveolar gas to the pulmonary capillary blood divided by the mean pressure gradient of the gas between the alveolar gas and the capillary blood. (12 Dec 1998) |
| pulmonary disease (specialty) | A subspecialty of internal medicine concerned with the study of the respiratory system. It is especially concerned with diagnosis and treatment of diseases and defects of the lungs and bronchial tree. (12 Dec 1998) |
| pulmonary distomiasis | Infection with trematodes of the genus paragonimus. (12 Dec 1998) |
| pulmonary dysmaturity syndrome | <syndrome> A respiratory disorder occurring in small, premature infants who are incapable of normal pulmonary ventilation and who often die of hypoxia after an illness of 6 to 8 weeks; the lungs contain widespread focal emphysematous blebs and the parenchyma has thickened alveolar walls; diagnosed principally on the basis of the clinical history, chest radiographic findings, and the findings at autopsy, which must include the absence of pathological changes characteristic of other pulmonary disorders commonly encountered in this age group. Synonym: Wilson-Mikity syndrome. (05 Mar 2000) |
| pulmonary embolism | <cardiology> The lodgment of a blood clot in the lumen of a pulmonary artery, causing a severe dysfunction in respiratory function. Pulmonary emboli often have origin in the veins of the lower extremities where clots form in the deep leg veins and then travel to the lungs via the venous circulation. Symptoms and features include acute onset of shortness of breath, chest pain (worse with breathing) and rapid heart rate and respiratory rate. Some individuals may have haemoptysis. Diagnosis can be made on a ventilation perfusion scan of the lung or on a pulmonary angiogram. (15 Dec 1997) |
| pulmonary embolism: findings | <radiology> Embolism without infarction (90%), normal chest (25%), platelike atelactasis, Westermark sign, knuckle sign, local widening of artery by impacted embolus, segmental / lobar consolidation, pleural effusion embolism with infarction (10%), wedge-shaped consolidation (50%), may cavitate, Hampton hump, pleural effusion (50%), no air-bronchogram, melting sign, Fleischner lines, platelike atelactasis (25%), cardiomegaly / congestive heart failure (20%), elevated hemidiaphragm (20%) see: pulmonary embolism (12 Dec 1998) |
| pulmonary emphysema | Condition of the lungs characterised by increase beyond normal in the size of air spaces distal to the terminal bronchioles, either from dilatation of the alveoli or from destruction of their walls. (12 Dec 1998) |