Abstract: Objective: To know the prevalence of pressure ulcer in hospitalized patients and hospital acquired pressure ulcer in China through Meta-analysis. Methods: CNKI, Wanfang, VIP, CBM, Pubmed and Web of Science were searched for Meta analysis. The subgroups analysis of gender, age, ulcer stage, department, pressure ulcer area, regional, level of hospitals and year were conducted. Results: A total of 20 studies were included. The total sample size for the study was 422 523 cases and 4 019 cases of pressure ulcers. Of these, 17 reported 709 cases of hospital-acquired pressure ulcers. Meta-analysis showed that the prevalence of pressure ulcer in hospitalized patients was 1.67% and 0.68% in hospital-acquired pressure ulcers in China. In the subgroup analysis, the prevalence of pressure ulcers in men was 1.19%, which was higher than that of female patients with 0.69%; The highest prevalence of pressure ulcer was 5.33% in patients over 80 years old; The prevalence of stage I and II pressure ulcers were 0.59% and 0.50%, which was higher than other ulcer staging group. The prevalence of pressure ulcer in ICU patients was the highest with 18.76%; The prevalence of sacrococcygeal pressure ulcer was the highest with 0.70%, and followed by heel with 0.13%, iliac with 0.10% and greater trochanter with 0.10% (only one article); The prevalence of pressure ulcer in south China was the highest with 3.98% and lowest in north China was 0.56% (only one article); The prevalence rate of pressure sores in secondary hospitals was higher than that in tertiary hospitals, with 2.55% (only one article) to 1.70%. Grouped by the year of publication, the prevalence of pressure sores in hospitalized patients in China is on an upward trend. Conclusions: The current prevalence of pressure ulcer in different populations is different. Men, the aged, ICU patients, patients in south China and secondary hospitals are more likely to get the pressure ulcer. To prevent the occurrence of pressure ulcers, those in stage I and II need more care. Sacrococcygeal, heel, iliac crest and the greater trochanter site are a key site for pressure ulcers, and need more attention. The annual rate of pressure ulcers need to be investigated to get complete prevalence of pressure ulcer, and to provide reference for clinical nursing.

Key words: pressure ulcer; hospital-acquired pressure ulcer; prevalence; meta-analysis