Which diagnostic test is least likely to aid in diagnosing detrusor atony?

Detrusor atony refers to a condition where the detrusor muscle of the bladder fails to contract effectively, leading to urinary retention. In diagnosing detrusor atony, certain tests can provide valuable insights into bladder function and related neurological factors.

An electrocardiogram (ECG) is primarily used to assess the electrical activity of the heart. While cardiovascular health can indirectly impact overall wellbeing, it does not provide any direct information about bladder function or the contractility of the detrusor muscle. Therefore, it is the least likely test to aid in diagnosing detrusor atony.

On the other hand, imaging studies (such as ultrasound) can visualize bladder size, wall thickness, and urine retention, aiding in assessing detrusor function. Urinalysis can identify urinary tract infections or other abnormalities, which are important considerations in urinary retention cases. A neuro exam is crucial for understanding potential neurological causes that may affect bladder control, as detrusor atony can be linked to neurological disorders. These tests all provide relevant information for diagnosing detrusor atony, making the ECG the least beneficial in this context.