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Biomedical subjects

G Simon

Publications and source records attributed to G Simon.

At least 379 records · Page 21Linked to original sources
PubMed1970

[IgD myeloma].

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Bone Neoplasms↗
PubMed1970

Abnormal distribution of pulmonary blood flow in aortic valve disease. Relation between pulmonary function and chest radiograph.

Wasted ventilatory volume (V(D)) and its ratio to tidal volume (V(D)/V(T)) were measured at rest and during exertion in 17 patients with aortic valve disease. We considered V(D)/V(T) to indicate abnormal ventilation: perfusion relations if it did not decrease on exertion, or if the exercising value was greater than 40 per cent. Plain chest radiographs were independently examined for evidence of diversion of pulmonary blood to the upper lobes. There was significant agreement (p<0.05) between radiographic and pulmonary function estimations of abnormality. This suggests that the raised pulmonary venous pressure associated with left ventricular failure creates an abnormal pattern of blood flow through the lung, which is responsible for causing inadequate perfusion with respect to ventilation.

Aortic Valve Insufficiency↗