Typically due to atherosclerotic disease or fibromuscular dysplasia.
Often presents with accelerated or difficult-to-control hypertension.
Worsening kidney function, especially after initiating renin-angiotensin blockade, and recurrent flash pulmonary oedema are common features.
Presence of renal artery narrowing does not necessarily indicate clinical consequences. Renal artery stenosis, renovascular hypertension, and ischaemic nephropathy are various manifestations of this process.
Definitive diagnosis is with imaging.
Renal artery stenosis (RAS) is a narrowing of the renal artery lumen. It is considered angiographically significant if more than a 50% reduction in vessel diameter is present. Ischaemic nephropathy is a chronic reduction in glomerular filtration rate that occurs from a narrowing in the renal artery. Renovascular hypertension is hypertension mediated by high levels of renin and angiotensin II, produced by an underperfused kidney supplied by a stenosed renal artery.
History and exam
- presence of key risk factors
- onset of hypertension age >55 years
- history of accelerated, malignant, or resistant hypertension
- history of unexplained kidney dysfunction
- history of multi-vessel coronary artery disease
- history of other peripheral vascular disease
- abdominal bruit
- sudden or unexplained recurrent pulmonary oedema
- onset of hypertension age <30 years
Interventional Cardiology Fellow
Mount Sinai Hospital
RM declares that he has no competing interests.
Assistant Professor of Medicine
University of Massachusetts Medical School
UMass Memorial Medical Center
AA declares that he has no competing interests.
RM and AA would like to gratefully acknowledge Dr Manmeet Singh and Dr Scott J. Gilbert, previous contributors to this topic. MS and SJG declare that they have no competing interests.
Department of Family Medicine
University of Texas Health Science Center
RT declares that he has no competing interests.
Chicago Medical School
Rosalind Franklin University
IM declares that he has no competing interests.
Aberdeen Royal Infirmary
JW declares that he has no competing interests.
Grover E. Murray Professor
University Distinguished Professor
Texas Tech University Medical Center
NAK declares that he has no competing interests.
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