Results of classical LRR (light reflection rheography) and PPG (photoplethysmography) with a tourniquet compared with measurements of leg filling and emptying during leg elevation, sitting up, and activation of the calf pump using air plethysmography (dynamic photoplethysmography, DPG).

Results of classical LRR (light reflection rheography) and PPG (photoplethysmography) with a tourniquet compared with measurements of leg filling and emptying during leg elevation, sitting up, and activation of the calf pump using air plethysmography (dynamic photoplethysmography, DPG). - LRR plus PPG vs DPG

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00038859

Enrollment

Registered

2026-01-19

Start date

2026-03-02

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

Chronic venous insufficiency

Interventions

Group 1: Group I: Chronic venous insufficiency, 20 participants Group 2: Group II 20 participants with postthrombotic syndrome Group 3: Group III: 20 healthy controls

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: Presence of venous insufficiency (Group I) Presence of post-thrombotic syndrome (Group II) Absence of venous insufficiency (Group III)

Exclusion criteria

Exclusion criteria: Acute thrombosis Pregnancy (not due to risk to the pregnant individual or the unborn child, but because of the potential influence on the results) Lack of capacity to provide informed consent Insufficient ability to communicate in German Participation in another study within the previous 4 weeks

Design outcomes

Primary

Measure	Time frame
Comparison of the effectiveness and reproducibility of the respective measurement methods, assessed during a single study visit, with performance of the three measurement procedures: PPG, LRR, and DPG.	—

Secondary

Measure	Time frame
Correlation of the results with quality-of-life questionnaires and findings from the clinical examination. Comparison of the results (primary endpoint) with clinical assessment (CEAP, VCSS) and questionnaires (CIVIQ).	—

Countries

Germany

Contacts

Public ContactERika Mendoza

Venenpraxis Wunstorf

info@venenpraxis-wunstorf.de00491732436531

Outcome results

None listed

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