SDMS CME Credit – The Diagnostic Accuracy of Sonographic Parameters for Renal Artery Stenosis in Adults: A Rapid Literature Review Based on a Statistical Approach

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Article: The Diagnostic Accuracy of Sonographic Parameters for Renal Artery Stenosis in Adults: A Rapid Literature Review Based on a Statistical Approach

Authors: Gurinder Dhanju, MD, MPH, Iain Kirkpatrick, MD, FRCPC, Ashraf Goubran, MD, FRCPC, Sheldon Wiebe, MD, FRCPC, Rachan Preet Jammu, BScN, and Nicole Askin, MLIS

Category: Vascular Technology [VT]

Credit: 0.75 SDMS CME Credit

Objectives: After studying the article, you should be able to:

• Identify the common sonographic parameters used to diagnose renal artery stenosis (RAS).

• Discuss the efficacy of using sonographic parameters for diagnosing RAS by comparing different cutoff values and assessing their impact.

• Recognize the established cutoff values for sonographic parameters recommended by the ACR appropriateness criteria and the median cutoff values calculated in the study.

1. What is the main conclusion discussed in the article regarding the use of sonographic parameters for diagnosing renal artery stenosis (RAS)?

2. B. Sonographic parameters are not reliable for diagnosing RAS.

3. C. A single cutoff value is sufficient for diagnosing RAS.

4. D. A range of cutoff values, preferably within the 95% confidence interval (CI), may be more accurate for predicting RAS.

The article’s objective was to concentrate on how many of the well-established sonographic parameters for diagnosing RAS?

A. 1

B. 2

C. 3

D. 4

According to the ACR appropriateness criteria, what is the suggested cutoff value for peak systolic velocity (PSV) in the renal artery for diagnosing RAS?

A. 100 - 125 cm/second

B. 150 - 200 cm/second

C. 200 - 380 cm/second

D. 180 - 300 cm/second

According to the ACR appropriateness criteria, what is the suggested cutoff value for the renal aortic ratio (RAR) for diagnosing RAS?

A. ≥2.5

B. ≥3.0

C. ≥3.5

D. ≥4.0

According to Table 3, what was the median cutoff value for peak systolic velocity (PSV)?

A. 150 cm/second

B. 180 cm/second

C. 200 cm/second

D. 300 cm/second

According to Table 3, what was the median cutoff value for the renal aortic ratio (RAR)?

A. 2.8

B. 3.15

C. 3.5

D. 4

Except for RAR, the mean 95% CI for all the other three sonographic parameter cutoff values were:

A. Outside of the range of cutoff values commonly followed in the literature.

B. Far outside of the range of cutoff values commonly followed in the literature.

C. Just outside of the range of cutoff values commonly followed in the literature.

D. Within the range of cutoff values commonly followed in the literature.