| HMSAS | hypertrophic muscular subaortic stenosis |
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| HN | head and neck; head nurse; hemagglutinin neuraminidase; hematemesis neonatorum; hemorrhage of newbor... |
| HOA | hip osteoarthritis; hypertrophic osteoarthropathy |
| HOCM | high-osmolar contrast medium; hypertrophic obstructive cardiomyopathy |
| HSAS | hydrocephalus due to stenosis of aqueduct of Sylvius; hypertrophic subaortic stenosis |
| 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) |
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| 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) |
| pulmonary encephalopathy | Coma seen with advanced lung failure and resultant hypoventilation. Synonym: CO2 narcosis, hypoxic-hypercarbic encephalopathy, pulmonary encephalopathy. (05 Mar 2000) |
| pulmonary eosinophilia | A disease characterised by pulmonary infiltrations of eosinophils and blood eosinophilia. (12 Dec 1998) |
| pulmonary fibrosis | Chronic inflammation and progressive fibrosis of the pulmonary alveolar walls, with steadily progressive dyspnea, resulting finally in death from oxygen lack or right heart failure. (12 Dec 1998) |
| pulmonary fistula | A parietal fistula communicating with the lung. (05 Mar 2000) |
| pulmonary gas exchange | The exchange of oxygen and carbon dioxide between alveolar air and pulmonary capillary blood. (12 Dec 1998) |
| pulmonary glomangiosis | Glomangiosis occurring within small pulmonary arteries in severe pulmonary hypertension and congenital heart disease. (05 Mar 2000) |
| pulmonary glomus | A structure similar to the carotid body, found in relation to the pulmonary artery. Synonym: glomus pulmonale. (05 Mar 2000) |
| pulmonary haemosiderosis | Haemosiderosis usually associated with mitral stenosis and marked by an accumulation of macrophages loaded with haemosiderin within the alveoli. (05 Mar 2000) |
| pulmonary hamartoma | <tumour> Hamartoma of the lung, producing a coin lesion composed primarily of cartilage and bronchial epithelium. Synonym: adenochondroma. (05 Mar 2000) |
| pulmonary heart | The right atrium and ventricle, receiving the venous blood and propelling it to the lungs. See: cor pulmonale. (05 Mar 2000) |
| pulmonary hypertension | <cardiology> Abnormally elevated blood pressure within the pulmonary circuit (pulmonary artery). Pulmonary hypertension may be secondary to another disease process (VSD, ASD, severe COAD) or occur as a primary disease process known as primary pulmonary hypertension. (27 Sep 1997) |