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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

July 11, 2008
May 11, 2011
July 2008
September 2008   (final data collection date for primary outcome measure)
  • Prevalence of Renal Artery Stenosis (RAS) [ Time Frame: 2 months ] [ Designated as safety issue: Yes ]
  • The Number of Patients With Renal Artery Stenosis [ Time Frame: 3months ] [ Designated as safety issue: Yes ]
    the prevalence of renal artery stenosis in patients with coronary artery disease
Same as current
Complete list of historical versions of study NCT00885768 on Archive Site
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Prevalence of Renal Artery Stenosis in Patients Referred for Cardiac Catheterization
Prevalence of Renal Artery Stenosis in Patients Refered for Cardiac Catheterization to Heart Center Hospital in July-September 2008

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.

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.

Observational Model: Case-Only
Time Perspective: Prospective
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Non-Probability Sample

All patients reffered to the Tehran Heart center for coronary angiography

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.
patients with renal artery stenosis
Intervention: Procedure: angiography
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
April 2009
September 2008   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • age more than 18 years

Exclusion Criteria:

  • contraindication to contrast use
  • not signing consent
18 Years and older
Contact information is only displayed when the study is recruiting subjects
Iran, Islamic Republic of
Mohammad Reza Khatami, Kidney Research Center
Imam Khomeini Hospital
Tehran Heart Center
Not Provided
Imam Khomeini Hospital
April 2009

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP