ETCO2 10-20mmHg signifies high quality chest compressions
Attaining ROSC is associated with an ETCO2 jump 10mmHg with ROSC (13.5 on average)
10mHg has a sensitivity of 33% and a specificity of 97% for ROSC
20mHg has a sensitivity of 20% and a specificity of 99% for ROSC
CPR does not have to be stopped for pulse checks
Loss of ROSC can be determined by a significant drop signifies drop in ETCO2
10mHg has a sensitivity of 33% and a specificity of 97% for ROSC
20mHg has a sensitivity of 20% and a specificity of 99% for ROSC
ETCO2 level of 10mmHg or less after 20 min of CPR predicts death
Capnography
Compartment pressure measurement
Thromboelastography 
Glasgow-Blatchford Bleeding Score
Tourniquet
Tourniquet 
Age adjusted D-dimer
D-dimer