Assessment of renal function in the old. Special considerations.
Level 5 - mechanism / opinion, no new human data
Narrative review and expert guidance without primary empirical data in the abstract
What was done
Method and design based on a review evaluating clinical assessment of renal function in older adults, specifically focusing on monitoring glomerular filtration rate using serum creatinine and creatinine clearance.
What was found
Creatinine clearance decreases at a rate of approximately 1% per year after age 40 years. Mean serum creatinine concentrations do not increase with age because creatinine production, dependent on muscle mass, falls at nearly the same rate.
Why it matters
Serum creatinine alone does not reflect age-related declines in glomerular filtration rate, necessitating cautious interpretation when dosing renally eliminated medications such as aminoglycoside antibiotics and digoxin in older adults.
Limits
This is a narrative overview without reported sample sizes, specific patient cohorts, variance metrics, or original experimental data in the abstract.
Cited by
- context Serum creatinine levels are known to increase over time with aging.