Clinical trial NCT04354883: The Schmitz-Hinkelbein Method. A New Technique for CPR in Space.
Official title: The Schmitz-Hinkelbein Method. A New Method for the Performance of External Chest Compressions During Microgravity.
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Cardiac Arrest
Keywords: cardiopulmonary resuscitation
CPR
Lead sponsor: Universitätsklinikum Köln
Sponsor class: OTHER
First posted: 2020-04-21
Enrollment: 15
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

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.

Eligibility criteria: 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

Primary outcomes:
measure: total number of chest compressions
timeFrame: 60 seconds video clip with afterwards evaluation
measure: number of correct chest compressions
timeFrame: 60 seconds video clip with afterwards evaluation
measure: compression rate
timeFrame: 60 seconds video clip with afterwards evaluation
measure: correct compression rate
timeFrame: 60 seconds video clip with afterwards evaluation
measure: depth rate
timeFrame: 60 seconds video clip with afterwards evaluation
Secondary outcomes:
measure: no-flow-time
timeFrame: 60 seconds video clip with afterwards evaluation
measure: thorax release
timeFrame: 60 seconds video clip with afterwards evaluation
measure: Self-Satisfaction-Score
timeFrame: 60 Seconds, Questionnaire filled out by participants after dive
Other outcomes:
Locations:
city: Cologne
country: Germany
facility: University Hospital of Cologne
state: Northrhine-Westphalia
Study officials:
References:
citation: Schmitz J, Ahlback A, DuCanto J, Kerkhoff S, Komorowski M, Low V, Russomano T, Starck C, Thierry S, Warnecke T, Hinkelbein J. Randomized Comparison of Two New Methods for Chest Compressions during CPR in Microgravity-A Manikin Study. J Clin Med. 2022 Jan 27;11(3):646. doi: 10.3390/jcm11030646.