Compression pressure of the subclavian vein: force measurements via a microconvex ultrasound probe up to vessel occlusion as a function of different positioning maneuvers and different CPAP levels in volunteers

Compression pressure of the subclavian vein: force measurements via a microconvex ultrasound probe up to vessel occlusion as a function of different positioning maneuvers and different CPAP levels in volunteers - Subpress 2

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00034403

Enrollment

Registered

2024-10-10

Start date

2024-10-28

Completion date

Unknown

Last updated

2025-04-07

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

Conditions

Z51

Interventions

Group 1: Sonographic imaging of the right subclavian vein with the microconvex ultrasound probe in cross-section close to the clavicle and measurement of the force required up to complete occlusion of

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: healthy volunteers

Exclusion criteria

Exclusion criteria: - limited head-neck or shoulder arm movements - wound or skin irritation over the measurement site (subclavian fossa) - current or previous fracture of the clavicle - previous thoracic surgery - contraindication or intolerance of non-invasive ventilation via a face mask

Design outcomes

Primary

Measure	Time frame
Force up to full compression of the right subclavian vein with a microconvex ultrasound probe during different positioning maneuvers and CPAP levels	—

Secondary

Measure	Time frame
Cross sectional area of the right subclavian vein under the same conditions	—

Countries

Germany

Contacts

Public ContactAndreas Meiser

Universität des Saarlandes

andreas.meiser@uks.eu+496841-16-30000

Outcome results

None listed

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