Classification( By hemodynamic characteristics ype CO TPR mBP Clinical(skin) Low Co+ high r pale、cod、 clam High co+LowR↑fush、warm、dry Low co+ Low r cyanosis, icelike-cold R: resistanceClassification（ By hemodynamic characteristics） Low CO + high R ↓ ↑ ↓ pale、cold 、 clamy High CO + Low R ↑ ↓ ↓ flush、warm 、dry Type CO TPR mBP Clinical (skin) Low CO + Low R ↓ ↓ ↓ cyanosis 、icelike-cold R: resistance