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Updated: Sep 30, 2026

A Modified Two Kidney One Clip Mouse Model of Renin Regulation in Renal Artery Stenosis
Published on: October 26, 2020
Hypertension and narrowing of the renal arteries in infancy
W J Rahill1, A Molteni, K M Hawking
1Department of Pediatrics, State University of New York at Buffalo, N.Y., USA.
Insights
Severe hypertension in infants due to renal artery stenosis can be treated surgically. While surgery improves blood pressure, some infants experience persistent mild hypertension, requiring further investigation.
Area of Science:
- Pediatric Nephrology
- Cardiovascular Surgery
- Medical Research
Background:
- Renovascular hypertension in infants, caused by renal artery stenosis, presents a significant clinical challenge.
- Surgical correction of renal ischemia is a primary treatment option for this condition.
Observation:
- Two infants with severe hypertension and renal artery stenoses underwent surgical correction.
- Post-surgery, both infants experienced a significant drop in blood pressure but maintained mild hypertension for months.
Findings:
- A review of 13 infants with renovascular hypertension showed a high mortality rate (4/4) without surgical intervention.
- Persistent hypertension post-surgery, despite apparent relief of renal ischemia, was observed in this cohort.
Implications:
- Surgical intervention for infant renovascular hypertension is critical for reducing mortality.
- The underlying causes of persistent hypertension after surgical correction require further research.
Abstract:
The clinical histories of two infants who had severe hypertension and stenoses of the renal arteries are reported. In both children blood pressure fell significantly after surgical correction of renal ischemia. However, both infants had persistent mild hypertension for several months after surgical treatment. Similar results were found in other infants with renovascular hypertension, reported previously (11 cases). The mortality rate in this total group of 13 infants reviewed was high if renal ischemia was not corrected surgically (4/4). The reason why some infants have persistent hypertension after apparently adequate surgical relief of renal ischemia is not known.
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