Objective  To analyze the prevalence and related factors of Mycobacterium tuberculosis infection in patients with chronic kidney disease(CKD).

  Methods  A total of 327 CKD patients were selected as research objects. The factors that may affect CKD patients with Mycobacterium tuberculosis infection were collected, and the patients were divided into two groups according to whether they were combined with Mycobacterium tuberculosis infection or not. The above-mentioned factors were compared between the two groups, and the comprehensive effect of each factor was judged by multivariate Logistic regression analysis.

  Results  A total of 63 cases (19.27%) of 327 CKD patients in this survey were infected by Mycobacterium tuberculosis. The results of multivariate Logistic regression analysis showed that female (OR=0.710, 95%CI, 0.526 to 0.959), serum albumin ≥35 g/L (OR=0.689, 95%CI, 0.536 to 0.886), 25-hydroxyvitamin D≥30 nmol/L (OR=0.744, 95%CI, 0.555 to 0.996) were protective factors for Mycobacterium tuberculosis infection in CKD patients, while age ≥60 (OR=1.863, 95%CI, 1.286 to 2.698), history of exposure to tuberculosis (OR=1.654, 95%CI=1.183~2.312), history of smoking (OR=1.895, 95%CI, 1.300 to 2.760), types of antibiotics usage>2 (OR=2.250, 95%CI, 1.328 to 3.812), the use of immunosuppressive agents (OR=2.065, 95%CI, 1.417 to 3.008) were risk factors (P < 0.05).

  Conclusion  The infection rate of Mycobacterium tuberculosis in CKD patients is relatively high, which is mainly affected by the patient's gender, serum albumin, 25-hydroxyvitamin D, age, history of tuberculosis exposure, smoking history, types of antibiotics, and use of immunosuppressants.