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Hypertension is an independent risk factor for contrast nephropathy after percutaneous coronary intervention

David Conen1, Gerd Buerkle, André P Perruchoud

  • 1Department of Cardiology, University Hospital Basel, Switzerland.

International Journal of Cardiology
|November 22, 2005
PubMed

Insights

Hypertension is a significant independent risk factor for contrast nephropathy, a type of acute kidney injury, following percutaneous coronary intervention. Patients with high blood pressure face a higher risk of developing this condition after the procedure.

Area of Science:

  • Nephrology
  • Cardiology
  • Radiology

Background:

  • Radiographic contrast agents can cause acute kidney injury.
  • Contrast nephropathy is a concern in patients undergoing percutaneous coronary intervention (PCI).
  • Hypertension is a common comorbidity in patients undergoing PCI.

Purpose of the Study:

  • To investigate whether hypertension is an independent risk factor for contrast nephropathy.
  • To determine the incidence of contrast nephropathy in hypertensive versus non-hypertensive patients undergoing PCI.

Main Methods:

  • 1383 patients undergoing PCI were randomized to receive different hydration regimens.
  • Contrast nephropathy was defined as a rise in serum creatinine ≥ 44 micromol/l within 48 hours.
  • Hypertension was defined as a history of diagnosed high blood pressure.

Main Results:

  • The prevalence of hypertension was 63% in the study population.
  • Contrast nephropathy developed in 2% of hypertensive patients vs. 0.4% of non-hypertensive patients (p=0.016).
  • Arterial hypertension remained an independent predictor of contrast nephropathy after adjusting for confounders (OR 4.6, p=0.046).

Conclusions:

  • Hypertension is confirmed as an independent risk factor for contrast nephropathy.
  • Enhanced preventive strategies are needed for hypertensive patients undergoing procedures with contrast agents.
  • This finding highlights the importance of managing blood pressure in patients at risk for contrast-induced kidney injury.
Abstract

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