Drugs and the kidney

Area of Science:

• Nephrology
• Pharmacology
• Internal Medicine

Background:

• Drug-induced nephrotoxicity is a significant clinical concern, particularly in patients with diminished renal function.
• Reduced glomerular filtration rate (GFR), common in aging populations, exacerbates renal side effects of medications.
• Understanding drug pharmacokinetics and renal excretion is vital for preventing kidney damage.

Purpose of the Study:

• To provide a comprehensive overview of drug nephrotoxicity, emphasizing prevention and early diagnosis.
• To highlight specific drug classes and agents associated with renal adverse effects.
• To inform clinical practice regarding safe medication use in patients with varying degrees of kidney function.

Main Methods:

• Review of existing literature on drug nephrotoxicity and renal side effects.
• Analysis of mechanisms by which therapeutic agents can induce kidney damage.
• Discussion of clinical implications and management strategies for drug-induced kidney injury.

Main Results:

• Numerous therapeutic agents pose a risk of nephrotoxicity, particularly when renal excretion is impaired.
• Conditions like chronic kidney disease (CKD) stages 2-5 increase susceptibility to drug-induced renal damage.
• Specific examples include NSAIDs worsening hypertension, aspirin increasing bleeding risk, and ACE inhibitors/ARBs causing electrolyte imbalances.

Conclusions:

• Awareness of drug nephrotoxicity is essential for appropriate medication selection and dosing, especially in elderly patients and those with CKD.
• Certain drugs like digoxin are contraindicated in specific CKD stages, while others like topiramate can cause kidney stones.
• Careful use of radiocontrast media and gadolinium-based agents is recommended in patients with advanced CKD to prevent further renal injury.