How is urination flow rate, volume and frequency affected in men who have had complete surgical removal of the prostate to treat prostate cancer?

Home Assessment of urinary voiding and storage function before and After Radical Prostatectomy for prostate cancer: setting patient expectations (The HAARP study)

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN18295405

Enrollment

Registered

2020-04-28

Start date

2018-05-10

Completion date

Unknown

Last updated

2020-05-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Urinary function following radical prostatectomy for prostate cancer Urological and Genital Diseases

Interventions

40 men will complete a fluid intake diary and perform home uroflowmetry for 1 week using the Flowtaker device before surgery and at 3 and 12 months after radical prostatectomy for prostate cancer. The

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: Men undergoing radical prostatectomy for prostate cancer

Exclusion criteria

Exclusion criteria: 1. Men with an indwelling urinary catheter 2. Men who carry out intermittent self-catheterisation 3. Men unable or unwilling to void in a standing position

Design outcomes

Primary

Measure	Time frame
1. Number of voids per 24-h period assessed using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy 2. Number of voids per night assessed using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy 3. Urinary flow rate assessed using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy 4. Voided volume assessed using using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy	—

Measure

Time frame

1. Number of voids per 24-h period assessed using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy 2. Number of voids per night assessed using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy 3. Urinary flow rate assessed using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy 4. Voided volume assessed using using the Flowtaker device at baseline and 3 and 12 months after radical prostatectomy

—

Secondary

Measure	Time frame
1. Urinary symptoms measured by the ICIQ-MLUTS questionnaire at baseline and 3 and 12 months after radical prostatectomy 2. General well-being measured by the FACT-P questionnaire at baseline and 3 and 12 months after radical prostatectomy 3. Qualitative analysis of interviews	—

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026