Evaluation of the Tardus‐Parvus Pattern in Patients With Atherosclerotic and Nonatherosclerotic Renal Artery Stenosis

  title={Evaluation of the Tardus‐Parvus Pattern in Patients With Atherosclerotic and Nonatherosclerotic Renal Artery Stenosis},
  author={Jianchu Li and Yan Yuan and Wei Qin and Lei Wang and Qing Dai and Zhenhong Qi and Hua Meng and Sheng Cai and Yu-xin Jiang},
  journal={Journal of Ultrasound in Medicine},
The aim of this study was to evaluate the differences in the tardus‐parvus pattern between atherosclerotic and nonatherosclerotic renal artery stenosis (RAS) and to explore the causes of these differences. 

Renal Vascular Fibromuscular Dysplasia

This chapter will discuss the epidemiology, clinical associations, and presentations of fibromuscular dysplasia and review treatment approaches and outcomes.

Impact of Atherosclerosis and Age on Doppler Sonographic Parameters in the Diagnosis of Renal Artery Stenosis

The purpose of this study was to investigate the influence of atherosclerosis and age on 4 representative Doppler parameters in the diagnosis of renal artery stenosis.

Renal Duplex Sonographic Evaluation of Type 2 Diabetic Patients

  • M. ManciniM. Masulli O. Vaccaro
  • Medicine
    Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine
  • 2013
The purpose of this study was to evaluate the renal volume and intrarenal hemodynamics with duplex sonography in a group of diabetic patients with normal renal function in comparison to nondiabetic

Renovascular Hypertension.

Renovascular hypertension

  • Anand Banka
  • Medicine
    Journal of Renal Nutrition and Metabolism
  • 2021
The pathophysiology of Renovascular Hypertension, clincal pointers diagnostic tests and management of renovascular hypertension are reviewed.

Multimodality imaging of fibromuscular dysplasia

The role of imaging in patients with FMD with an emphasis on renal FMD is reviewed, with a high index of suspicion for accurate and prompt diagnosis and implementation of appropriate therapy.

“Tardus and Parvus” Phenomenon in Upper Limb Arteries for Identifying Subclavian Arterial Stenosis

The “tardus and parvus” phenomenon in ipsilateral axillary and brachial arteries could be employed as an alternative method and a shortcut for detection of the SCA stenosis or occlusion.

Management of atherosclerotic renal artery stenosis

The available data provide support against indiscriminate use of interventions, as these treatments appear no better than best medical treatment that focuses on blood pressure control, use of blockers of the renin–angiotensin system, and aggressive cardiovascular risk management.

velocity in a stenotic segment of the renal artery. cutoff 180 300

  • Medicine
  • 2018
Clinical features associated with an increased likelihood of renovascular hypertension include an abdominal bruit, malignant or accelerated hypertension, significant (diastolic pressure >110 mm Hg) hypertension in a young adult, new onset after 50 years of age, sudden development or worsening of hypertension, refractory hypertension, deterioration of renal function in response to angiotensin-converting enzyme (ACE) inhibitors, and generalized arteriosclerotic occlusive disease with hypertension.

Renovascular Hypertension R e v i e w A r t i c l e

Renovascular hypertension (RVH) constitutes a major cause of secondary hypertension. The most common causes for RVH are atherosclerosis and fibromuscular dysplasia. RVH is an important prognosticator



Reliability of intrarenal Doppler sonographic parameters of renal artery stenosis

The goal of this study was to retrospectively evaluate false‐negative results of Doppler sonography in the diagnosis of renal artery stenosis (RAS) using intrarenal criteria.

Intrarenal arterial Doppler sonography in patients with nonobstructive renal disease: correlation of resistive index with biopsy findings.

It is concluded that some forms of nonobstructive renal disease can produce changes in the Doppler waveform detectable by RI measurement, particularly within the tubulointerstitial compartment, which is strongly influenced by the site of the main disease within the kidneys.

Pulsus tardus: its cause and potential limitations in detection of arterial stenosis.

Poststenotic pulsus tardus is caused by the compliance of the poststenotic vessel wall in conjunction with the stenosis, which produces the tardu effect by damping the high-frequency components of the arterial waveform.

Duplex scan sonography of renal artery stenosis.

  • C. RabbiaS. Valpreda
  • Medicine
    International angiology : a journal of the International Union of Angiology
  • 2003
Sonography is usually the first diagnostic modality for the non invasive evaluation of renal vascular disease with 95% sensitivity and 90% specificity when performed in dedicated laboratories and actually is the best screening test because it is not expensive, non invasive and accurate.

Stenosis of the renal artery: assessment of slowed systole in the downstream circulation with Doppler sonography.

Regression and correlation coefficients of AI and RI measurements were statistically significant, and discrimination between normal arteries and those with greater than 75% stenosis was excellent.

Renal artery stenosis: analysis of Doppler waveform parameters and tardus-parvus pattern.

Doppler characterization of the tardus-parvus phenomenon in the distal renal artery is not an adequate screening method for detection of renal artery stenosis.

Renal artery stenosis: should we study the main renal artery or segmental vessels?

Minimum early systolic acceleration plus RAR resulted in improved sensitivity for detection of RAS, but this improvement was not significant and probably not warranted in most clinical situations.

Use of Doppler ultrasonography to predict the outcome of therapy for renal-artery stenosis.

A renal resistance-index value of at least 80 reliably identifies patients with renal-artery stenosis in whom angioplasty or surgery will not improve renal function, blood pressure, or kidney survival.