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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 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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Schmitz-Hinkelbein-Method | Active Comparator |
| |
| Hinkelbein-Schmitz-Method | Active Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| External Chest Compressions on Manikin in Underwater Setting | Procedure | Two different methods of CPR in an analogue model of mircogravity |
|
| Measure | Description | Time Frame |
|---|---|---|
| total number of chest compressions | defined as >2 cm of compression depth | 60 seconds video clip with afterwards evaluation |
| number of correct chest compressions | defined as 50-60 mm of depth | 60 seconds video clip with afterwards evaluation |
| compression rate | defined as any compression of the thorax | 60 seconds video clip with afterwards evaluation |
| correct compression rate | defined as 100-120 compressions min-1 | 60 seconds video clip with afterwards evaluation |
| depth rate | defined as 50-60 mm of depth | 60 seconds video clip with afterwards evaluation |
| Measure | Description | Time Frame |
|---|---|---|
| no-flow-time | time without effective compression after the onset of chest compressions | 60 seconds video clip with afterwards evaluation |
| thorax release | correct thorax release after compression |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital of Cologne | Cologne | North Rhine-Westphalia | 50937 | Germany |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 35160097 | Derived | 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. |
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| ID | Term |
|---|---|
| D006323 | Heart Arrest |
| ID | Term |
|---|---|
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
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| 60 seconds video clip with afterwards evaluation |
| Self-Satisfaction-Score | Depth Frequency Feasibility Exhaustion All in All Quality | 60 Seconds, Questionnaire filled out by participants after dive |