To investigate the changes of pain and blood gas indexes in patients with inguinal hernia after laparoscopic tension-free repair.

A total of 60 patients with inguinal hernia were treated in the first affiliated hospital of Hebei north university between February 2017 and May 2019. The patients were divided into the study group and control group, according to random number table. The control group was treated with open tension-free repair. The study group was treated with laparoscopic tension-free repair. The perioperative conditions, and the pain scores at 6, 24, and 72 hours after operation in the two groups were recorded; observing the changes of arterial blood oxygen partial pressure (PaO₂), pH and arterial blood carbon dioxide partial pressure (PaCO₂) before and after pneumoperitoneum using a blood gas analyzer; the levels of serum inflammatory factors before and after operation in two groups at 24 and 72 hours were detected; the incidence of postoperative adverse reactions in the two groups was counted. The measurement data is represented by (±s), and the t test is used for comparative analysis. The measurement indexes at different times were compared by analysis of variance. The count data is expressed as a rate (%), and the χ² test is used for comparative analysis.

The operation time and hospitalization time in the study group were shorter than that in the control group, and the intraoperative blood loss was smaller than that in the control group, the differences were statistically significant (t=3.660, 13.857, 18.661; P<0.05). Compared with before treatment, the scores of VAS in the two groups gradually decreased at 24 h and 72 h after operation, and the study group was lower than the control group, the differences were statistically significant (t=3.660, 19.351, 16.096; P<0.05). Compared with the before pneumoperitoneum, the levels of pH and PaO₂ in the two groups decreased at 20 min after pneumoperitoneum, the level of PaCO₂ increased, and the levels of pH and PaO₂ in the study group were lower than those in the control group, and the level of PaCO₂ was higher than that in the control group, the differences were statistically significant (F=4.545, 28.441, 59.922; P<0.05). Compared with preoperative, the levels of serum c-reactive protein, interleukin-6 in the two groups were lower at 24 h and 72 h after operation, and the study group was lower than the control group, the differences were statistically significant (F=69.629, 13.489, 292.441, 65.421; P<0.05). The total adverse reaction rate was 6.06% in the study group, which was significantly lower than that in the control group (25.93%), the difference was statistically significant (χ²=4.596; P<0.05).

Laparoscopic tension-free repair for patients with inguinal hernia hernia can significantly improve the patient's perioperative condition and blood gas index levels, and can inhibit the patient's inflammatory response and relieve pain. In addition, the operation has high safety and is worthy of promotion.