Abstract: Objective To review the experience of metabolic evaluation of urinary stones in Peking Union Medical College Hospital, and summarize the ‘PUMCH model’ of metabolic evaluation. Methods With descriptive evaluation method, this study reviewed and analyzed 534 metabolic evaluation cases in the urology department of Peking Union Medical College Hospital from Jan. 2016 to Dec. 2021. The distribution differences of stone patients in gender, medical history, stone shape, stone composition, renal function, systemic metabolism and 24-hour urine metabolism were observed. Results This study found that males were more than females in terms of gender differences in stone patients; The average course of stone disease was about 10 years, and the first symptom was mainly renal colic; Calcium oxalate was the most common stone component; Kidney stone was more than urethral stone; Hyperlipidemia was the most common in patients with stones; The low concentration of urinary citrate was the most significant. Conclusions As a new method of stone diagnosis and treatment, the ‘PUMCH model’ of metabolic evaluation can comprehensively evaluate the patients' stone incidence and systemic metabolic abnormalities, which has a strong guiding role in stone treatment and prevention.

Key words: urinary stone, metabolic evaluation, PUMCH model, metabolic abnormality