Key result
Ultrasonic Doppler methods for diagnosing renal artery stenosis yielded sensitivities ranging from 31% to 91% and specificities from 88% to 100%.
Why the study?
Does ultrasonic Doppler (duplex scanning) accurately assess renal artery stenosis and hemodynamics?
Does ultrasonic Doppler (duplex scanning) accurately assess renal artery stenosis and hemodynamics?
Ultrasonic Doppler methods provide a noninvasive means to assess renal artery stenosis with high specificity but variable sensitivity, heavily dependent on operator experience.
Variable sensitivity limits Doppler reliability for excluding renal artery stenosis; leaves open standardization and prospective validation.
We present a review of ultrasonic Doppler methods (duplex scanning) used in the noninvasive assessment of renal artery stenosis and hemodynamics. The clinically successful applications of ultrasonic Doppler methods to the noninvasive assessment of the peripheral and cerebral vasculatures have prompted investigators to apply these methods to the renal artery. Various Doppler criteria for the diagnosis of renal artery stenosis have given sensitivities and specificities that range from 31% to 91% and 88% to 100%, respectively. Furthermore, estimates of renal vascular flows and resistances can be made in echogenic subjects. The technical success rate of the method is operator dependent, consequently, reliable duplex scanning of the renal arteries may be limited to experienced ultrasound laboratories.
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Greene et al. (1987) conducted a review in Renal artery stenosis. Ultrasonic Doppler methods (duplex scanning) was evaluated on Diagnosis of renal artery stenosis. Ultrasonic Doppler methods for diagnosing renal artery stenosis yielded sensitivities ranging from 31% to 91% and specificities from 88% to 100%.
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