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Hi all, Is it possible for a fatal GSW to the chest to be externally bloodless (as in 100%)? If so, how many times have you seen this in the field? Thank you.

Hello everyone, I am a member of a student team of engineers designing an automatic, portable CPR machine. This device could be positioned in public areas (similar to AEDs) and could be attached to patients, freeing medical personell to simultaneously move patients or tend other injuries. We really need to prioritize design characteristics (portability, adjustability, etc.), but without field medical experience, we're a bit in the dark! Would you be able to give us a hand by ranking the following CPR machine characteristics (in terms of importance) on a scale of 1-10? Thank you so much! If you have any other thoughts, we'd love to hear those as well! Form/Enclosure: Size - Weight - Appearance - Few components - Comfort (for patient and operator) - Adjustability to different body types - Operation: How fast it can by moved/applied - Simplicity of use - Ability to move patient while in use - Ability to monitor patient condition - Ability to automatically adjust to patient status - User Interface: Communication of instructions - Ability to manually adjust rate/force of chest compression, etc. - Ability to interface with ambulances, other medical equipment - Other: Weather resistance - Theft deterrence - Low maintenance required - Battery life -