Key result
Pulsed Doppler echocardiography accurately estimates left-to-right shunts in ASD, correlating strongly with invasive oximetry.
Why the study?
Although Doppler echocardiography accurately estimated Qp/Qs in pediatric and experimental shunt lesions, its accuracy for determining shunt flow magnitude in adult patients with ostium secundum atrial septal defects required assessment.
Does pulsed Doppler echocardiography accurately quantify left-to-right shunts compared to oximetry in adult patients with atrial septal defect?
Population
32 patients (16 with ostium secundum atrial septal defect and 16 without heart disease)
Comparison
Pulsed Doppler echocardiography vs oximetry
Design
Observational diagnostic accuracy study
Authors
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May support noninvasive ASD shunt assessment; leaves open routine adoption pending larger contemporary validation studies.
Observational (n=32)
Does pulsed Doppler echocardiography accurately quantify left-to-right shunts compared to oximetry in adult patients with atrial septal defect?
Effect estimate: r 0.93
Pulsed Doppler echocardiography provides an accurate, noninvasive method to quantify left-to-right shunts in adult patients with secundum atrial septal defects, aiding in treatment decisions.
Dittmann et al. (1988) conducted an observational in Atrial septal defect (n=32). Pulsed Doppler echocardiography vs. Oximetry was evaluated on Correlation of Qp/Qs ratio between pulsed Doppler echocardiography and oximetry (r 0.93). Pulsed Doppler echocardiography accurately estimated left-to-right shunts in adults with atrial septal defects, showing strong correlation with invasive oximetry (r = 0.93).
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