The Effect of Electronic Cleansing Toilet System (Bidet) on Anal Resting Pressure

The Effect of Electronic Cleansing Toilet System (Bidet) on Anal Resting Pressure in Normal Healthy Volunteers

Status

Completed

Phases

Early Phase 1

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01111006

Enrollment

Registered

2010-04-27

Start date

2009-09-30

Completion date

2010-01-31

Last updated

2010-04-27

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

Conditions

Anorectal Physiology

Keywords

Electronic toilet, Bidet, Anorectal resting pressure

Brief summary

The purpose of this study was to evaluate the effect of Bidet on anal resting pressure with regards to various flow rates and temperatures.

Detailed description

Bidet is an electronic device spraying stream of the water for cleansing the anus and sometimes to aid defecation. It is widely used in Korea and Japan, with the flow rate (pressure) and temperature of water varying widely among the manufacturers. However, the effects of Bidet on anorectal function have not been studied in detail with regards to these variables.

Interventions

DEVICEBidet (electronic cleansing toilet system)

The volunteers underwent rectal examinations and baseline manometry at lateral decubitus position. Subjects were then placed on a toilet with Bidet attached and manometry catheter was inserted and fixed placing the channels of the catheter at the high pressure zone (HPZ) of the anal canal. Anorectal pressures were measured before and after using the Bidet under different water pressures (4, 8, 16, 20 gram force, gf), types of water stream (narrow vs. wide), and different temperatures (24oC vs. 38oC).

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

SUPPORTIVE_CARE

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

20 Years to 30 Years

Healthy volunteers

Yes

Inclusion criteria

* healthy volunteer

Exclusion criteria

* anal disease pregnancy any medical disease that is necessary to treat psychosis

Design outcomes

Primary

Measure	Time frame	Description
The pressure before and after applying the bidet	after 1minute	After the anal resting pressure was stabilized at sitting position, water stream of the bidet was applied to anus for 1 minute under various settings of different pressures (4, 8, 16, 20 gram force, gf), temperatures (24oC vs. 38oC), types of stream (narrow vs. wide) (Total time for experiment at individual subject was about two hours)

Secondary

Measure	Time frame	Description
The temperature of rectum	after 1minute	The temperature probe was supposed to be placed in the rectum with manometry catheter and to prove the possibility of insertion of warm water into the rectum.

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026