A cystometrogram is done to assess the function of the

Appeared in: DSSSB 6 September 2024

Explanation

A cystometrogram (CMG), also known as cystometrography, is a key component of urodynamic studies (UDS) designed to assess how the urinary bladder functions.
It measures the pressure-volume relationship of the bladder, specifically its ability to store urine (compliance) and empty (contractility of the detrusor muscle).
The test involves filling the bladder with sterile fluid via a catheter and recording intravesical pressure, abdominal pressure, and the calculated detrusor pressure.
It is essential for diagnosing conditions like detrusor overactivity (urge incontinence), urodynamic stress incontinence, and neurogenic bladder dysfunction.

Option A: A CMG assesses the bladder's function, not the prostate gland directly. While an enlarged prostate can cause bladder symptoms, the test itself measures bladder dynamics.
Option B: The lungs are respiratory organs and are unrelated to the urinary system or a cystometrogram.
Option D: The gall bladder is part of the digestive system and is not evaluated by a cystometrogram.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Diagnostic procedure for urinary bladder function as background academic context rather than a clinical decision trigger.
Nurses play a vital role in preparing the patient for a CMG, which includes providing clear explanations to reduce anxiety, ensuring the patient has an empty bladder before the test, and positioning them correctly.
Post-procedure, nurses must monitor for complications such as urinary tract infections (a risk with any catheterization), hematuria, and urinary retention.
Understanding CMG results helps nurses implement and evaluate appropriate care plans, such as teaching timed voiding schedules for overactive bladder or clean intermittent catheterization for urinary retention.

How to Approach the Question

This is a factual recall question that tests your knowledge of medical terminology and diagnostic procedures.
First, identify the key term in the question: 'cystometrogram'.
Break down the term into its roots: 'cysto-' is a prefix referring to the bladder, and '-metrogram' refers to a measurement or record.
This etymology directly points to a measurement related to the urinary bladder.
Evaluate the options provided. The prostate is part of the male reproductive and urinary systems but is a distinct organ. The lungs (respiratory) and gall bladder (digestive) belong to different body systems.
Based on the word's meaning, select the option that directly corresponds to the bladder.

Concept Tested & Keywords

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E6 Gynecology Williams p. 110-138

Practise the full DSSSB 6 September 2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.