The relationship ABO–Rh blood group with urinary tract infections in hospitalized patients

Background and Aim: There is no consensus in the literature on the relationship between blood groups and risk of urinary tract infection (UTI). The present study was conducted to evaluated the relationship of blood groups with UTI and determine the most common bacterial cause of UTI in different blood groups. Materials and Methods: This descriptive-analytical (cross sectional) study was conducted from 2016 to 2018 in different wards of BouAli Sina Hospital. we used convenience sequential sampling method. Characteristics and blood groups of UTI cases, and blood group of all blood donors in Qazvin Province in 2018 were recorded. Using SPSS software 25, data were analyzed by chi-square test. P<0.05 was considered significant. Results: Of 244 patients, 57% were female and the mean age of the patients was 70.83±14.98. No significant difference was observed between UTI patients and healthy population in regard to the distribution of ABO and Rh blood groups (P>0.05). There was not a significant relationship between ABO and Rh groups and type of organism (P>0.05). The most common organism responsible for UTI was E. coli in the participants with different types of blood groups. The lowest rate of UTI due to E. coli (52%) belonged to O group and the highest rate (71%) was associated with AB group. Conclusion: In comparison with the healthy population, rate of UTI was not different among the subjects with different blood groups. It seems that these antigens play a minor role in the pathogenesis of UTI. E.coli was the most common organism responsible for UTI in the participants with all blood subgroups.