Which client is most likely to experience adverse effects when receiving medications in a residential facility?

The individual most likely to experience adverse effects when receiving medications in a residential facility is the 77-year-old man with a creatinine level of 3.6. Elevated creatinine levels indicate impaired kidney function or reduced renal clearance, which can significantly impact how the body processes and eliminates medications. In older adults, kidney function often declines, making them more susceptible to drug toxicity and adverse effects, especially if the medications have a narrow therapeutic range or require dose adjustments based on renal function.

Individuals with compromised kidney function may accumulate drugs that are eliminated primarily by the kidneys, leading to increased side effects or toxicity. This makes careful monitoring and potential dose adjustments crucial for this patient. Conversely, the other clients listed either do not have the same concerns regarding renal function or have fewer health risks, thus placing them at a lower risk for experiencing adverse medication effects.