RA is a chronic polyarticular inflammatory arthritis that involves not only small joints of the hands and feet but also systemic organs. Pathologic change: chronic synovitis with pannus (血管 翳)formation
Diagnosis of cardiac and respiratory arrest Traditional methods : 1. Carotid pulse check by lay rescuers 2. Loss of consciousness 3. Pupil dilation 4. Respiratory arrest
Epidemiology 6th leading cause of death in U.S. Number one Among the infectious diseases 5.6 million patients annually in US Incidence 5~10/1,000/year Mortality in OPD patients 1-5 %, but Inpatients 25%, ICU 50-60%