Assessment of bladder function for stabilizing urinary volume overnight with recording of brain waves II

The study for demonstrating that the ability of the bladder to absorb urine and adjust its volume during bedtime contributes to the maintenance of sleep. - the ABSORB study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000039534

Enrollment

Registered

2020-02-20

Start date

2020-02-23

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Nocturia

Interventions

Indwelling of Foley catheter Setting of a portable electroencephalograph Injection of indigocarmine solution 20 mL into the bladder Period: a night

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: No urination during bedtime

Exclusion criteria

Exclusion criteria: Awakening by urination during bedtime

Design outcomes

Primary

Measure	Time frame
Temporal change of estimated bladder volume based on urinary indigocarmine concentration	—

Countries

Japan

Contacts

Public ContactChie Matsushita

Osaka Gyomeikan Hospital Department of Urology

monanako68@yahoo.co.jp0662640261

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026