Association of long-term use of low-dose aspirin with Helicobacter pylori infection and effect on recurrence rate.

To investigate the relationship between long-term use of low-dose aspirin and Helicobacter pylori (HP) infection, and its effect on eradication and recurrence of HP. According to the results of C14-Urea Breath Test (C14-UBT), 3256 patients with cardiovascular and cerebrovascular diseases from March 2019 to December 2020, were divided into HP infection group and non-infection group. Univariate and multivariate was used to investigate the relationship between Low-dose aspirin use and HP infection. 859 patients with hypertension combined with HP infection were divided into aspirin group, non-aspirin group and control group, the eradication rate after 2 weeks of bismuth-containing quadruple drug treatment and the recurrence rate after 1,3 year were compared. The overall infection rate of HP was 53.3%. The results of univariate analysis showed that the infection rate of female, age, BMI, LDL-C, FBG of HP infected group was higher than non-infection. The infection rate of patients who took low-dose aspirin was higher than no-aspirin [56.6% vs. 51.3%, χ2 = 8.548, P = 0.003]. Multivariate Logistic regression analysis showed that long-term aspirin use still increased the risk of infection (OR = 1.433, 95% CI 1.196-1.947, P < 0.001). The Per-Protocol analysis showed that the overall eradication rate was 87.6%, and among the eradication rates of aspirin group, non-aspirin group and control group were not statistically significantly (87.8%, 88.5%, and 86.6%, respectively), The Intention-To-Treat analysis showed that the overall eradication rate was 84.3%, and the eradication rates among the three groups were not statistically significantly. The overall 1-year recurrence rate was 1.3%, and the recurrence rates of the three groups were no statistical significance. The overall 3-years recurrence rate was 3.1%, and the recurrence rate of aspirin group was higher than non-aspirin group and control group (5.30%, 1.90% and 1.70%, respectively, χ2 = 6.118, P < 0.05). The main adverse reactions in the first month of eradication treatment were constipation and mild nausea, and there was no statistical significance between the three groups. Long-term use of low-dose aspirin increases the risk of HP infection and the recurrence rate in 3 years after eradication. It is suggested that HP should be tested and eradicated regularly in long-term users.