In North America, added qualifications in critical care medicine are obtained after board certification in a primary specialty such as pediatrics, internal medicine, surgery, or anesthesiology.

• 在北美地区，专科医生在拥有基本专业证书---如儿科、内科、外科或麻醉科等---后就可以去获得另的危重病护理医学资格证书。