Cardiac Arrest
Conditions
Keywords
cardiopulmonary resuscitation, CPR
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.
Interventions
PROCEDUREExternal Chest Compressions on Manikin in Underwater Setting
Two different methods of CPR in an analogue model of mircogravity
Sponsors
Universitätsklinikum Köln
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| depth rate | 60 seconds video clip with afterwards evaluation | defined as 50-60 mm of depth |
| number of correct chest compressions | 60 seconds video clip with afterwards evaluation | defined as 50-60 mm of depth |
| compression rate | 60 seconds video clip with afterwards evaluation | defined as any compression of the thorax |
| correct compression rate | 60 seconds video clip with afterwards evaluation | defined as 100-120 compressions min-1 |
| total number of chest compressions | 60 seconds video clip with afterwards evaluation | defined as \>2 cm of compression depth |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| thorax release | 60 seconds video clip with afterwards evaluation | correct thorax release after compression |
| Self-Satisfaction-Score | 60 Seconds, Questionnaire filled out by participants after dive | Depth Frequency Feasibility Exhaustion All in All Quality |
| no-flow-time | 60 seconds video clip with afterwards evaluation | time without effective compression after the onset of chest compressions |
Countries
Germany
Outcome results
None listed