At Which Level of Renal Impairment Should a Clinician Discontinue

question 8

Multiple Choice

At which level of renal impairment should a clinician discontinue the use of metformin?

• A) Glomerular filtration rate (GFR) < 60 ml/min
• B) GFR < 40 ml/min
• C) GFR < 30 ml/min
• D) None of the above; it can be used regardless of kidney function

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Definitions:

Redness

A common indication of inflammation or irritation, marked by a reddening of the skin.

Bruising

Discoloration, pain, and swelling caused by bleeding under the skin, usually from impact or injury.

Darker Areas

Regions that appear visually darker due to less illumination or inherent properties reducing light reflection.

Moles

In dermatology, a common type of skin growth; in chemistry, a unit measuring the amount of substance.