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Transthoracic echocardiography a reliable tool for assessing proximal aorta diameters

15 Jul 2017
The graveyard shift at the Singapore General Hospital (SGH)

Transthoracic echocardiography (TTE) appears to be consistent when evaluating proximal aorta diameters in hypertensive patients, a new study shows.

Researchers examined the accuracy of TTE vs cardiac magnetic resonance (CMR) for the evaluation of proximal thoracic aorta diameters in a cohort of hypertensive patients. They recruited 75 essential hypertensive outpatients previously assessed by TTE and then by CMR.

The two techniques were specifically compared at the level of sinuses of Valsalva (SoV) and ascending aorta (Asc) diameter. For the TTE image, researchers compared the inner edge-to-inner edge and leading edge-to-leading edge conventions.

When using the leading edge-to-leading edge convention, TTE and CMR diameters were significantly correlated (SoV: r=0.931; p<0.001; Asc: r=0.949; p<0.001). TTE and CMR diameters had a mean difference of 2.49±2.01 mm at the level of SoV and 1.13±1.77 mm at the level of Asc.

In addition, TTE diameters measured by inner edge-to-inner edge convention also showed good correlation (SoV: r=0.936; p<0.001; Asc: r=0.947; p<0.001).

Inner edge-to-inner edge demonstrated better correlation with CMR measurements than leading edge-to-leading edge, with a good interobserver and intraobserver agreement, based on comparisons of the two techniques in the assessment of Asc.

“Accurate and reproducible measurements of proximal thoracic aorta diameters are essential in the diagnosis and follow-up of patients with aortic dilatation, a condition particularly common in hypertensive patients,” researchers said.

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Most Read Articles
5 days ago
Higher circulating levels of docosahexaenoic acid (DHA) and docosapentaenoic acid (DPA) appear to be protective against incident atherothrombotic and cardioembolic strokes, respectively, according to a recent study.
Roshini Claire Anthony, 11 Oct 2017

The prevalence of resistant hypertension may be lower than expected, particularly once pseudo-resistant hypertension due to treatment nonadherence is taken into account, according to a presentation at the recent APCH 2017.

Pank Jit Sin, 07 Jan 2015

Cardiovascular diseases (CVD) have been the main cause of death in the Malaysian population since 2007. This trend has continued, with the number of people dying from CVD-related causes increasing year on year. 

Tristan Manalac, 6 days ago
Administration of a long-acting medication at the time that is most suitable for maximum patient compliance is the best approach in controlling blood pressure, said Dr. Trefor Morgan at the recently concluded 13th Asian-Pacific Congress of Hypertension (APCH 2017), held at the Suntec Singapore Convention and Exhibition Centre.