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Published on: April 18, 2013
Prevention of contrast induced nephropathy: recommendations for the high risk patient undergoing cardiovascular
Marc J Schweiger1, Charles E Chambers, Charles J Davidson
1Division of Cardiology, Baystate Medical Center, Springfield, MA 01199, USA. marc.schweiger@bhs.org
Insights
Preventing contrast induced nephropathy (CIN), a major cause of hospital renal failure, involves adequate hydration and careful management of risk factors. Key strategies include using low-osmolar contrast agents and withholding nephrotoxic medications in high-risk patients.
Area of Science:
- Nephrology
- Radiology
- Internal Medicine
Background:
- Contrast induced nephropathy (CIN) is a significant cause of hospital-acquired renal failure, linked to increased morbidity and mortality.
- Chronic kidney disease, particularly an estimated glomerular filtration rate <60 ml/1.73 m2, is a primary risk factor for CIN.
- Modifiable risk factors include hydration, contrast type/volume, concomitant nephrotoxic agents, and recent contrast exposure.
Purpose of the Study:
- To outline strategies for preventing contrast induced nephropathy (CIN).
- To identify high-risk patient populations and modifiable risk factors for CIN.
- To emphasize the importance of hydration and appropriate medication management in CIN prevention.
Main Methods:
- Review of established guidelines and clinical practices for CIN prevention.
- Focus on adequate parenteral volume repletion as a cornerstone of prevention.
- Consideration of specific interventions for high-risk patients, including medication adjustments and contrast agent selection.
Main Results:
- Adequate parenteral volume repletion is crucial for CIN prevention in all patients.
- High-risk patients benefit from withholding nephrotoxic medications and potentially using n-acetylcysteine.
- Utilizing low or iso-osmolar contrast agents and minimizing contrast volume are recommended for high-risk individuals.
Conclusions:
- CIN prevention hinges on proactive risk factor management, especially adequate hydration.
- For high-risk patients, tailored strategies involving medication management and contrast selection are essential.
- Post-procedure monitoring of serum creatinine and judicious use of medications like metformin are vital for recovery.
Abstract:
Contrast induced nephropathy (CIN) is the third leading cause of hospital acquired renal failure and is associated with significant morbidity and mortality. Chronic kidney disease is the primary predisposing factor for CIN. As estimated glomerular filtration rate<60 ml/1.73 m2 represents significant renal dysfunction and defines patients at high risk. Modifiable risk factors for CIN include hydration status, the type and amount of contrast, use of concomitant nephrotoxic agents and recent contrast administration. The cornerstone of CIN prevention, in both the high and low risk patients, is adequate parenteral volume repletion. In the patient at increased risk for CIN it is often appropriate to withhold potentially nephrotoxic medications, and consider the use of n-acetylcysteine. In patients at increased risk for CIN the use of low or iso-osomolar contrast agents should be utilized and strategies employed to minimize contrast volume. In these patients serum creatinine should be obtained forty-eight hours post procedure and it is often appropriate to continue withholding medications such as metformin or non steroidal anti-inflammatories until renal function returns to normal.
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