To analyze the correlation between abdominal wall incisional hernia typing and the pressure of abdominal pressure changes before and after surgery.

Forty-eight patients diagnosed with incisional hernia and surgical repair in the Department of Gastrointestinal Hernia and Abdominal Wall Surgery of West China Hospital of Sichuan University from September 2021 to September 2022 were selected for retrospective study. The hernia ring size was measured by abdominal CT combined with three-dimensional reconstruction to calculate the hernia sac/abdominal cavity volume ratio for staging, and abdominal pressure, heart rate, respiratory rate, oxygen saturation, mean arterial pressure, and urine output were recorded at different time points before and after surgery. Spearman's rank correlation coefficient was used to analyze the correlation between the hernia ring length diameter and the abdominal cavity/hernia sac volume ratio.

Thirteen medium-sized hernias, 19 large hernias, and 16 giant hernias were found in 48 patients. Hernia ring length and diameter ranged from 6 to 25 cm, with a mean of (11.53±3.79) cm; operative time (73.5±8) min; the correlation analysis between hernia ring size and hernia sac/abdominal cavity volume ratio showed a positive correlation (r=0.669, P<0.001); the highest abdominal pressures in the medium-sized hernia,large hernia, and giant hernia groups at 48 h postoperatively were (11.90±1.90), (15.00±3.00), (22.25±2.00) mmHg, respectively, suggesting a gradual increase in abdominal pressure; the time of anal defecation was (14.80±2.50), (17.50±2.00), (24.00±3.00) h, suggesting a delay in the time of defecation; the 24-hour postoperative urine volume was (1565.92±149.56), (1285.05±124.87), (1173.56±48.29) ml, suggesting a gradual decrease in urine output, and the differences between the three groups were statistically significant (P<0.05); between the three groups after the completion of preoperative anesthesia, when anesthesia was awake, 24 h postoperative, 48 h postoperative, respiratory rate, heart rate, oxygen saturation and mean arterial pressure of the three groups, and the differences were not statistically significant after LSD test (P>0.05).

Increased abdominal pressure after incisional hernia surgery, incisional hernia staging and postoperative abdominal pressure are closely related, and precise staging of incisional hernia surgery and postoperative monitoring of abdominal pressure are of clinical significance in preventing and coping with complications such as abdominal compartment syndrome.