Clinical Importance of AaDO2 and Pulmonary Artery Pressure as Predicted by Pulsed Doppler Echocardiography at Bedside in Diagnosing Pulmonary Embolism

The authors evaluated clinical importance of alveolar-arterial PO2 difference (AaDO2) and pulmonary artery pressure (PAP) estimated by pulsed Doppler echocardiography in 31 patients with pulmonary embolism (PE). Echocardiographic estimates from flow velocity patterns in the right ventricular outflow...

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Bibliographic Details
Published in:Angiology 1998-01, Vol.49 (1), p.33-40
Main Authors: Shioya, Takanobu, Kagaya, Manabu, Sasaki, Masahiro, Hasegawa, Hitoshi, Kibira, Satoshi, Miura, Mamoru
Format: Article
Language:English
Subjects:
Acute Disease
Adolescent
Adult
Aged
Biological and medical sciences
Blood Flow Velocity
Blood Pressure - physiology
Cardiac Catheterization
Echocardiography, Doppler, Pulsed
Evaluation Studies as Topic
Female
Forecasting
Humans
Hypertension, Pulmonary - diagnosis
Hypertension, Pulmonary - diagnostic imaging
Male
Medical sciences
Middle Aged
Oxygen - blood
Patients' Rooms
Pneumology
Pulmonary Artery - diagnostic imaging
Pulmonary Artery - physiopathology
Pulmonary Embolism - classification
Pulmonary Embolism - diagnosis
Pulmonary Embolism - diagnostic imaging
Pulmonary Gas Exchange - physiology
Pulmonary hypertension. Acute cor pulmonale. Pulmonary embolism. Pulmonary vascular diseases
Recurrence
Ultrasonography, Doppler, Pulsed
Ventilation-Perfusion Ratio
Ventricular Function, Right
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Summary:The authors evaluated clinical importance of alveolar-arterial PO2 difference (AaDO2) and pulmonary artery pressure (PAP) estimated by pulsed Doppler echocardiography in 31 patients with pulmonary embolism (PE). Echocardiographic estimates from flow velocity patterns in the right ventricular outflow tract showed significant correlation with actual measurements obtained by right cardiac catheterization. Furthermore, PAP as obtained by pulsed echocardiography was significantly higher in acute massive and recurrent multiple groups in comparison with the acute submassive group. AaDO2 was greatest in the acute massive group, followed by the recurrent multiple group, and then by the acute submassive group. These results suggest that analyses of AaDO2 and the echocardiographic estimation of PAP at bedside are successful in the diagnosis and classification of PE.
ISSN:0003-3197
1940-1574
DOI:10.1177/000331979804900104