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Completed

NCT Number: NCT04354883

The Schmitz-Hinkelbein Method. A New Technique for CPR in Space.

The risk of a severe medical event during long-duration spaceflight is significant and can endanger both the whole mission and crew. There is a certain risk for a cardiac arrest in space requiring cardiopulmonary resuscitation (CPR). So far, 5 known techniques to perform CPR in microgravity have been reported.

The aim of the present study was to describe and gather data for two new CPR techniques useful in microgravity.

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Key information

Conditions

Cardiac Arrest Cardiovascular Diseases Heart Arrest Heart Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University Hospital of Cologne

Cologne, North Rhine-Westphalia, 50937, Germany

About this study

The risk of a severe medical event during long-duration spaceflight is significant and can endanger both the whole mission and crew. There is a certain risk for a cardiac arrest in space requiring cardiopulmonary resuscitation (CPR). So far, 5 known techniques to perform CPR in microgravity have been reported.

The aim of the present study was to describe and gather data for two new CPR techniques useful in microgravity.

The investigators conducted a randomized controlled manikin trial and asked 15 participants with valid diving-license to resuscitate a manikin in two different techniques of CPR in a free-floating position underwater. The first technique, (Schmitz-Hinkelbein-Method) is similar to conventional CPR, with the patient in a supine position on the performer's knees for stabilization. The second technique (Hinkelbein-Schmitz-Method) is similar to the first, but chest compressions are conducted with the elbow.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Valid diving-license(SSI - Open Water Diver (OWD), CMAS *, PADI Open Water Diver, ISO 24801-2 (Autonomous Diver), NAUI Scuba Diver or equal license
  • German EMT-qualification

Exclusion criteria

  • any acute or chronic ENT illness/injury
  • no valid diving/EMT license

Treatment and study plan

External Chest Compressions on Manikin in Underwater Setting

Procedure

Two different methods of CPR in an analogue model of mircogravity

Primary outcomes

  1. total number of chest compressions

    Time frame: 60 seconds video clip with afterwards evaluation

    defined as >2 cm of compression depth

  2. number of correct chest compressions

    Time frame: 60 seconds video clip with afterwards evaluation

    defined as 50-60 mm of depth

  3. compression rate

    Time frame: 60 seconds video clip with afterwards evaluation

    defined as any compression of the thorax

  4. correct compression rate

    Time frame: 60 seconds video clip with afterwards evaluation

    defined as 100-120 compressions min-1

  5. depth rate

    Time frame: 60 seconds video clip with afterwards evaluation

    defined as 50-60 mm of depth

Secondary outcomes

  1. no-flow-time

    Time frame: 60 seconds video clip with afterwards evaluation

    time without effective compression after the onset of chest compressions

  2. thorax release

    Time frame: 60 seconds video clip with afterwards evaluation

    correct thorax release after compression

  3. Self-Satisfaction-Score

    Time frame: 60 Seconds, Questionnaire filled out by participants after dive

    Depth Frequency Feasibility Exhaustion All in All Quality

Sponsors and collaborators

Lead sponsor

Universitätsklinikum Köln

Other

Registry information

Official study title

The Schmitz-Hinkelbein Method. A New Method for the Performance of External Chest Compressions During Microgravity.

Important dates

Study start
2020
Primary completion
2020
Study completion
2020
First posted
Apr 21, 2020
Registry last updated
Apr 21, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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