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

Not Applicable

Completed

• Conditions: Cardiac Arrest
• Interventions: Procedure: External Chest Compressions on Manikin in Underwater Setting

• Registration Number: NCT04354883
• Lead Sponsor: Universitätsklinikum Köln

Brief Summary

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.

Detailed Description

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.

Study Timeline

• Study Start: 2020-01-02
• Primary Completion: 2020-03-30
• Status Verified: 2020-04
• Study Completion: 2020-04-01
• Study First Submitted: 2020-04-02
• Study First Submitted QC: 2020-04-20
• Last Update Submitted: 2020-04-20
• Study First Posted: 2020-04-21
• Last Update Posted: 2020-04-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 15

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Schmitz-Hinkelbein-Method	External Chest Compressions on Manikin in Underwater Setting	-
Hinkelbein-Schmitz-Method	External Chest Compressions on Manikin in Underwater Setting	-

Primary Outcome Measures

Name	Time	Method
number of correct chest compressions	60 seconds video clip with afterwards evaluation	defined as 50-60 mm of depth
correct compression rate	60 seconds video clip with afterwards evaluation	defined as 100-120 compressions min-1
depth rate	60 seconds video clip with afterwards evaluation	defined as 50-60 mm of depth
total number of chest compressions	60 seconds video clip with afterwards evaluation	defined as \>2 cm of compression depth
compression rate	60 seconds video clip with afterwards evaluation	defined as any compression of the thorax

Secondary Outcome Measures

Name	Time	Method
thorax release	60 seconds video clip with afterwards evaluation	correct thorax release after compression
no-flow-time	60 seconds video clip with afterwards evaluation	time without effective compression after the onset of chest compressions
Self-Satisfaction-Score	60 Seconds, Questionnaire filled out by participants after dive	Depth Frequency Feasibility Exhaustion All in All Quality

Trial Locations

Locations (1)

University Hospital of Cologne; 🇩🇪 Cologne, Northrhine-Westphalia, Germany