Investigation of the presence of internal jugular vein valves using ultrasonography

Investigation of the presence of internal jugular vein valves using ultrasonography - Investigation of the presence of internal jugular vein valves using ultrasonography

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000050776

Enrollment

Registered

2023-04-06

Start date

2023-04-06

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

Healthy people

Interventions

To investigate the presence of internal jugular vein valves using ultrasonography

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. 20 <= Age <=60 years 2. Individual who provides written informed consent 3. Individual who is confirmed as healthy person by medical history, physical examination including electrocardiography and arterial pressure measurements

Exclusion criteria

Exclusion criteria: 1. Individual who refuse to participate in the study 2. Individual who are judged as inappropriate participants by the principal investigator 3. Individual with cardiovascular diseases, autonomic imbalance, respiratory disease, severe systematic disease, medical history of those diseases 4. Individual with allergy for ultrasonic gel

Design outcomes

Primary

Measure	Time frame
The presence of internal jugular vein valves	—

Secondary

Measure	Time frame
cross-sectional area	—

Countries

Japan

Contacts

Public ContactTomokazu Kato

Nihon University School of Medicine Department of Social Medicine, Division of Hygiene

kato.tomokazu@nihon-u.ac.jp+81-3-3972-8111

Outcome results

None listed

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