Influence of Two Different PEEP Niveaus and a Trendelenburg Positioning Manoeuvre on Subclavian Vein Diameter

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

WITHDRAWN

Study Classification

OBSERVATIONAL

Study Start Date

2014-06-30

Study Completion Date

2015-12-31

Brief Summary

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In 50 Patients who are undergoing a planned surgical procedure which require a central venous catheter the diameter of the subclavian vein is measured by ultrasound under 6 different conditions.

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Detailed Description

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In 50 Patients who are undergoing a planned surgical procedure which require a central venous catheter the diameter of the subclavian vein is measured by ultrasound under 6 different conditions. The conditions are

1. neutral positioning, PEEP 0 cm H2O,
2. neutral positioning, PEEP 5cm H2O,
3. neutral positioning, PEEP 10cm H2O,
4. Trendelenburg positioning -20°, PEEP 0 cmH2O,
5. Trendelenburg positioning -20°, PEEP 5 cmH2O,
6. Trendelenburg positioning -20°, PEEP 10 cmH2O After these measurements a central venous catheter is used to measure the central venous pressure.

Conditions

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Insufficiency; Cardiac, Complicating Surgery

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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ultrasound measurement

measuring subclavian vein Diameter in six Groups:

neutral positioning, PEEP 0 cm H2O, neutral positioning, PEEP 5cm H2O, neutral positioning, PEEP 10cm H2O, Trendelenburg positioning -20°, PEEP 0 cmH2O, Trendelenburg positioning -20°, PEEP 5 cmH2O, Trendelenburg positioning -20°, PEEP 10 cmH2O After these measurements a central venous catheter is used to measure the central venous pressure.

neutral positioning, PEEP 0 cm H2O

Intervention Type OTHER

neutral positioning, PEEP 0 cm H2O

neutral positioning, PEEP 5cm H2O

Intervention Type OTHER

neutral positioning, PEEP 5cm H2O

neutral positioning, PEEP 10cm H2O

Intervention Type OTHER

neutral positioning, PEEP 10cm H2O

Trendelenburg positioning -20°, PEEP 0 cmH2O

Intervention Type OTHER

Trendelenburg positioning -20°, PEEP 0 cmH2O

Trendelenburg positioning -20°, PEEP 5 cmH2O

Intervention Type OTHER

Trendelenburg positioning -20°, PEEP 5 cmH2O

Trendelenburg positioning -20°, PEEP 10 cmH2O

Intervention Type OTHER

Trendelenburg positioning -20°, PEEP 10 cmH2O

Interventions

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neutral positioning, PEEP 0 cm H2O

Intervention Type OTHER

neutral positioning, PEEP 5cm H2O

Intervention Type OTHER

neutral positioning, PEEP 10cm H2O

Intervention Type OTHER

Trendelenburg positioning -20°, PEEP 0 cmH2O

Intervention Type OTHER

Trendelenburg positioning -20°, PEEP 5 cmH2O

Intervention Type OTHER

Trendelenburg positioning -20°, PEEP 10 cmH2O

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age \>18 years
* cardiosurgery or neurosurgery
* written informed consent
* ECG: inus rhythm

Exclusion Criteria

* peacemaker
* kontraindications for PEEP
* pulmonary disease
* hemodynamically instable patients
* pregnancy
* pulmonal Hypertension
* ejection fraction \< 35%
* severe valvular disease
* tricuspid insufficiency

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No