| pulmonary artery | <anatomy, artery> The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs. (12 Dec 1998) |
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| pulmonary artery aneurysm | Aneurysm of the pulmonary artery; rare in the absence of congenital heart disease. (05 Mar 2000) |
| pulmonary artery banding | A surgical method of decreasing pulmonary blood flow and thereby volume overload of the left ventricle, alleviating CHF in certain congenital heart defects. (05 Mar 2000) |
| pulmonary artery sarcoma | <radiology> Rare, age: 21 - 80 (most common: 45 - 55), usual presentation: hilar mass or hilar infiltrative lesion, other findings: decreased vascular markings, atelectasis / volume loss, metastatic nodules, decreased or absent perfusion on V/Q, intravascular soft-tissue mass on CT (12 Dec 1998) |
| pulmonary aspergillosis | An inflammatory and destructive disease of the bronchi and lungs due to the presence and growth of Aspergillus fumigatus. There are four varieties: 1) a bronchial infection with allergic manifestations, in which the fungus grows in the mucus (evoked by the inflammation), which may be expectorated as yellow bronchial casts and may cause intermittent bronchial obstruction, with transient pulmonary shadows seen radiographically; asthma is often present, and bronchial wall destruction may eventually result in a proximal form of bronchiectasis; 2) aspergilloma; 3) an infection with pulmonary necrosis as a pneumonic involvement of the lung in debilitated subjects; 4) disseminated aspergillosis. Synonym: bronchopneumonic aspergillosis, pulmonary aspergillosis. Disseminated aspergillosis, a variety of bronchopulmonary aspergillosis, characterised by a generalised infection of the lung with Aspergillus occurring usually in subjects with defective immune response. Invasive aspergillosis, so-called because of the peculiar predilection of Aspergillus fumigatus to invade blood vessels and cause tissue infarction; it is second only to candidiasis as a cause of opportunistic fungal infection in patients whose immune mechanisms have been suppressed by chemotherapy. (05 Mar 2000) |
| pulmonary atresia | Congenital absence of the normal valvular orifice into the pulmonary artery. This condition is characterised by cardiomegaly, reduced pulmonary vascularity, and right ventricular atrophy. (12 Dec 1998) |
| pulmonary blastoma | A malignant neoplasm of the lung composed chiefly or entirely of immature undifferentiated cells (i.e., blast forms) with little or virtually no stroma. (12 Dec 1998) |
| pulmonary branch of autonomic nervous system | Pulmonary branches of cardiac plexuses and cardiaopulmonary splanchnic nerves. Synonym: rami pulmonales systematis autonomici. (05 Mar 2000) |
| 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) |
| 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) |