• Selçuk Yaylacı, Hamad Dheir, Kubilay İşsever, Ahmed Bilal Genc, Didar Şenocak, Havva Kocayigit, Ertugrul Guclu, Kezban Suner, Hasan Ekerbicer, and Mehmet Koroglu.
• . Sakarya University Faculty of Medicine, Department of Internal Medicine.
• Rev Assoc Med Bras (1992). 2020 Jan 1; 66Suppl 2 (Suppl 2): 86-90.

AimThe aim of this study is to analyze the prognostic significance of ABO and Rh blood group antigens along with various parameters in patients followed-up with the diagnosis of COVID-19.MethodsWe evaluated 397 patients who were follow-up and treated due to COVID-19 infections. The ages, genders, chronic diseases, ABO and Rh blood group antigens, admission rates to Intensive Care Units (ICU), and mortality rates of the patients were analyzed.FindingsThe mean age of the 397 patients with COVID-19 was 47±17 years. In the blood group analysis of the patients, A Rh-positive (A +) was the most frequently seen blood type (176 patients, 44.3%) followed by O Rh-positive (0 +) (109 patients, 27,5%); 38 patients were Rh negative (Rh -) (9,6%). 53 of the patients (13,4%) were followed in ICU and 29 patients died (7,3%). Neither mortality nor admission to ICU was seen for Rh - group. The comparison of Rh groups concerning the need for ICU admission revealed a significantly high rate of ICU admission in the Rh + group (p=0,011), while no significant relationship was found between mortality and Rh antigen (p=0,069).ConclusionThe most frequently seen blood type among COVID-19 patients was A +. The Rh + blood group was found in all cases who were admitted to ICU and had a death outcome. The Rh + blood group was found in a significantly high number of patients who were admitted to ICU, while no significant relationship was found between mortality and Rh blood group.

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