## **Core Concept**
Cystometry, also known as urodynamic testing, is used to assess the function of the bladder and urethra. It involves measuring the pressure within the bladder during filling and voiding. A normal finding in cystometry would relate to the typical physiological responses of a healthy bladder.

## **Why the Correct Answer is Right**
The correct answer, , indicates a normal finding where the bladder demonstrates a gradual increase in pressure as it fills, without involuntary contractions. This is a key aspect of a normal cystometrogram, reflecting the bladder's compliance and ability to store urine without premature contractions.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option might suggest an abnormality such as a highly elevated pressure or an immediate contraction upon filling, which is not typical for a normal cystometry study.
- **Option B:** This could imply a lack of bladder sensation or an underactive bladder, which would not be considered a normal finding.
- **Option D:** This might indicate a significant abnormality such as a highly non-compliant bladder or severe detrusor overactivity, characterized by strong, involuntary contractions.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that during a normal cystometry study, the bladder fills with a gradual increase in pressure, and there should be no involuntary detrusor contractions. The presence of such contractions can indicate conditions like overactive bladder syndrome.

## **Correct Answer: C.**