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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
15
Two different methods of CPR in an analogue model of mircogravity
University Hospital of Cologne
Cologne, North Rhine-Westphalia, Germany
total number of chest compressions
defined as \>2 cm of compression depth
Time frame: 60 seconds video clip with afterwards evaluation
number of correct chest compressions
defined as 50-60 mm of depth
Time frame: 60 seconds video clip with afterwards evaluation
compression rate
defined as any compression of the thorax
Time frame: 60 seconds video clip with afterwards evaluation
correct compression rate
defined as 100-120 compressions min-1
Time frame: 60 seconds video clip with afterwards evaluation
depth rate
defined as 50-60 mm of depth
Time frame: 60 seconds video clip with afterwards evaluation
no-flow-time
time without effective compression after the onset of chest compressions
Time frame: 60 seconds video clip with afterwards evaluation
thorax release
correct thorax release after compression
Time frame: 60 seconds video clip with afterwards evaluation
Self-Satisfaction-Score
Depth Frequency Feasibility Exhaustion All in All Quality
Time frame: 60 Seconds, Questionnaire filled out by participants after dive
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