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Prevalence of Renal Artery Stenosis in Patients Referred for Cardiac Catheterization (RAS)

This study has been completed.
Tehran Heart Center
Information provided by:
Imam Khomeini Hospital Identifier:
First received: July 11, 2008
Last updated: May 11, 2011
Last verified: April 2009
All patients referred for coronary angiography will simultaneously be evaluated for renal artery stenosis and then stenosis more than 50% will be analyzed according to clinical conditions, risk factors and lab data.

Condition Intervention Phase
Renal Artery Stenosis
Procedure: angiography
Phase 3

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Prevalence of Renal Artery Stenosis in Patients Refered for Cardiac Catheterization to Heart Center Hospital in July-September 2008

Further study details as provided by Imam Khomeini Hospital:

Primary Outcome Measures:
  • Prevalence of Renal Artery Stenosis (RAS) [ Time Frame: 2 months ]
  • The Number of Patients With Renal Artery Stenosis [ Time Frame: 3months ]
    the prevalence of renal artery stenosis in patients with coronary artery disease

Enrollment: 146
Study Start Date: July 2008
Study Completion Date: April 2009
Primary Completion Date: September 2008 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
patients with renal artery stenosis
Procedure: angiography
all patients undergoing coronary angiography with VISIPAQUE and if they had coronary stenosis then renal artery angiography will be done. the dose of contrast will be chosen according to renal function and clinical conditions which will be varied from 75 to 300 ml.

Detailed Description:
Renal Artery Stenosis (RAS) is a common finding in patients with generalized atherosclerosis. It is the cause of 15-20% of end stage renal disease in elderly patients. The prevalence of asymptomatic RAS in general population is unknown but it estimated to be 18% in 7th decade and more than 50% in the 8th. It is critical to find and manage the RAS before it's symptoms appear. The Gold standard for diagnosis of atherosclerotic arterial stenosis is angiography. In this study we will evaluate the prevalence, severity, location and related factors to renal artery stenosis in patients whom referred for coronary angiography in period of July-September in one of the most referral heart center in Iran, "The Tehran heart center" which is doing more than 50 coronary angiography daily.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
All patients reffered to the Tehran Heart center for coronary angiography

Inclusion Criteria:

  • age more than 18 years

Exclusion Criteria:

  • contraindication to contrast use
  • not signing consent
  Contacts and Locations
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Please refer to this study by its identifier: NCT00885768

Iran, Islamic Republic of
Tehran Heart Center
Tehran, Iran, Islamic Republic of
Sponsors and Collaborators
Imam Khomeini Hospital
Tehran Heart Center
  More Information

Responsible Party: Mohammad Reza Khatami, Kidney Research Center Identifier: NCT00885768     History of Changes
Other Study ID Numbers: RAS001
Study First Received: July 11, 2008
Results First Received: March 9, 2010
Last Updated: May 11, 2011

Keywords provided by Imam Khomeini Hospital:
RAS(renal Artery Stenosis)

Additional relevant MeSH terms:
Constriction, Pathologic
Renal Artery Obstruction
Pathological Conditions, Anatomical
Kidney Diseases
Urologic Diseases
Arterial Occlusive Diseases
Vascular Diseases
Cardiovascular Diseases processed this record on April 25, 2017