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Doppler echocardiographic indices in aortic coarctation: a comparison of profiles before and after stenting
Shokoufeh Hajsadeghi1, Seyed-Mohammad Fereshtehnejad, Mahshid Ojaghi
1Department of Cardiology, Rasoul-e-Akram Hospital, Tehran University of Medical Sciences, Iran.
Insights
Doppler echocardiography effectively diagnoses aortic coarctation post-stenting. Key indices like velocity-time integral and pressure half-time show high accuracy for evaluating aortic narrowing and treatment response.
Area of Science:
- Cardiovascular imaging
- Interventional cardiology
- Diagnostic accuracy
Background:
- Aortic coarctation diagnosis is challenging, particularly in adults.
- Doppler echocardiography offers a potential simple diagnostic tool.
- This study evaluates echocardiographic indices for aortic coarctation detection.
Purpose of the Study:
- Compare pre- and post-stenting Doppler echocardiographic profiles.
- Assess the diagnostic value of echocardiographic indices for aortic coarctation.
- Identify reliable indicators for treatment response.
Main Methods:
- Prospective study of 23 patients with angiographically confirmed aortic coarctation.
- Performed serial echocardiographic assessments (2D and Doppler) before and after stenting.
- Calculated diagnostic values of various echocardiographic indices.
Main Results:
- Most abdominal/descending aorta indices significantly changed post-stenting (p < 0.001).
- Velocity-time integral and pressure half-time demonstrated high diagnostic accuracy.
- Mean velocity and pressure gradient of the abdominal aorta showed less significant changes.
Conclusions:
- Post-stenting echocardiographic profiles establish reliable normal hemodynamic reference values.
- These indices can serve as unique patient identifiers and reliable indicators of treatment response.
- Doppler echocardiography is valuable for assessing aortic coarctation and post-intervention outcomes.
Background:
Diagnosis of aortic coarctation is important as it is a difficult condition to evaluate, especially in adults. A Doppler echocardiographic index could provide a simple tool to evaluate coarctation. This study was performed to compare Doppler echocardiographic profiles before and after stenting and to assess the diagnostic value of a complete list of echocardiographic indices for detecting aortic coarctation.
Methods:
This prospective study was conducted on 23 patients with a diagnosis of aortic coarctation based on angiography. Echocardiographic assessment was done twice for all patients before and after stenting. Each time, two-dimensional and Doppler echocardiographic imaging modalities were performed and complete lists of indices were recorded for each case. After comparing the values of indices before and after stenting, diagnostic values of each index were calculated in order to diagnose significant coarctation.
Results:
Twenty-three patients, including 16 males and seven females with a mean age of 26.14 ± 10.17 years, were enrolled in this study. Except for the mean velocity and mean pressure gradient of the abdominal aorta, the values of the other indices of the abdominal/descending aorta showed enough change after stenting to indicate significant diagnostic accuracy for detecting aortic coarctation. The velocity-time integral and the pressure half-time were among the indices with the highest accuracy rates for this purpose (all p < 0.001).
Conclusion:
Post-stenting echocardiographic profiles could provide a reliable reference value of the normal aortic haemodynamics as a unique identification of each patient and it is presumed that these indices could be used as reliable indicators of response to treatment.
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