Cystometry, or getting a Cystometrogram (CMG)

Cystometry in a female patient
Cystometry in a female patient
National Institute of Diabetes and Digestive and Kidney Diseases,
National Institutes of Health

Cystometry, or cystometrogram, with a pressure flow study is part of urodynamic testing (or UDS). These tests measure how well the bladder functions. They help diagnose problems related to urine control. These can be incontinence, difficulty emptying the bladder, overactive bladder, obstructions or frequent infections.

Cystometry is used to measure how much urine the bladder can hold. It also measures pressure inside the bladder, and how full it is when you have the urge to go.

For more information please visit our article about Cystometry.

Urodynamics Related Resources

Information about Other Diagnostic Tests

Urologic Radiology

Fact Sheet

Fact Sheet


Other Groups' Resources

MedlinePlus – National Institutes of Health

Cystometric Study (English)
Estudio cistométrico (Español)

Uroflowmetry (English)
Uroflujometría (Español)

National Kidney and Urologic Diseases Information Clearinghouse (NKUDIC)

Urodynamic Testing