Influence of Insertion Angle on the Ultrasound Visibility of Flow-Switch Arterial Catheters: An Investigation in Phantom and Cadaver Models

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00037246

Enrollment

Registered

2025-06-27

Start date

2026-02-16

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Vascular punctures

Interventions

Group 1: In this study, a total of six different over-the-needle catheters are investigated, including five flow-switch catheters from different manufacturers and one standard peripheral intravenous c

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Consent to voluntary participation in the assessment of the ultrasound images

Exclusion criteria

Exclusion criteria: No consent to voluntary participation in the assessment of ultrasound images

Design outcomes

Primary

Measure	Time frame
The primary endpoint of the study is the ultrasound visibility of the inserted cannula (needle tip and needle shaft), determined by software-derived grayscale intensity values at predefined reference points.	—

Secondary

Measure	Time frame
The secondary endpoint is the agreement between the software-derived grayscale intensity values and the standardized visual ratings of ultrasound visibility provided by physicians.	—

Countries

Germany

Contacts

Public ContactBenjamin Vojnar

Klinik für Anästhesie und Intensivtherapie, Universitätsklinikum Gießen und Marburg GmbH, Standort Marburg

vojnar@med.uni-marburg.de064215861123

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Aug 10, 2026