The severity of acute pancreatitis (AP) is classified into mild, moderately severe, and severe, considering the presence and duration of organ failure and local complications. Since patients with AP show a large difference in mortality and morbidity according to AP severity, evaluation of the severity of patients with AP in the early stage is important for predicting the prognosis and determining treatment plans including transfer to the intensive care unit or advanced facilities. In order to evaluate the initial severity of AP, it is necessary to confirm the presence of organ failure and objective evaluation using imaging or clinical examinations. In this guideline, it is recommended that evaluation using various severity indices such as bedside index for severity in acute pancreatitis (BISAP), systemic inflammatory response syndrome (SIRS), and acute physiology and chronic health evaluation (APACHE)-II scores be considered.

서 론
본 론
    1. 중증도 분류
    2. 중증도 평가의 필요성
    3. 영상 검사를 통한 중증도 평가
    4. 임상 증상, 징후 및 임상 검사를 통한 중증도 평가
    5. 중증도 판정 기준을 이용한 평가
    6. 전원 기준
결 론
요 약
REFERENCES

• 조중현(연세대학교 의과대학 세브란스병원 내과) | Jung Hyun Jo (Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul)
• 장동기(서울대학교 의과대학 서울특별시 보라매병원 내과) | Dong Kee Jang (Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul)
• 이상협(서울대학교 의과대학 서울대학교병원 내과 및 간연구소) | Sang Hyub Lee (Department of Internal Medicine and Liver Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul)
• 정민규(경북대학교 의과대학 경북대학교병원 내과) | Min Kyu Jung (Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu)
• 이동호(서울대학교 의과대학 서울대학교병원 영상의학과) | Dong Ho Lee (Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea)