SUMMARY OBJECTIVE: This study aimed at investigating whether there is a relationship between 7- or 30-day mortality and mean platelet volume, platelet distribution width, platelet count-to-total lymphocyte count ratio, or red cell distribution width in patients with traumatic brain injury. METHODS: We retrospectively analyzed intensive care unit patients with traumatic brain injury. We recorded patients’ ages; genders; diagnoses; Glasgow Coma Scale scores; length of intensive care unit stay (in days); mean platelet volume, platelet distribution width, platelet count-to-total lymphocyte count ratio, and red cell distribution width values upon hospital admission; and health on the 7th and 30th days of their stays. RESULTS: We analyzed data from 110 patients. Of these, 84 (76.4%) were male and 26 (23.6%) were female. On the 7- and 30-day mortality evaluations, compared to the living patients, the deceased patients had a significantly higher median age and a significantly lower median Glasgow Coma Scale. Thus, increased age and lower Glasgow Coma Scale scores were associated with increased 7- and 30-day mortality rates. mean platelet volume and platelet distribution width values were similar in living and deceased patients. platelet count-to-total lymphocyte count ratio values were lower in deceased patients, but this difference was not statistically significant. Within 30 days after traumatic brain injury, deceased patients’ red cell distribution width values were significantly elevated in deceased patients compared to those of living patients. CONCLUSION: Mean platelet volume, platelet distribution width, and platelet count-to-total lymphocyte count ratio values were not associated with 7- and 30-day mortality, whereas only elevated red cell distribution width was associated with 30-day mortality. OBJECTIVE 7 30day day counttototal total injury METHODS ages genders diagnoses days) admission th stays RESULTS 11 these 8 76.4% 764 76 4 (76.4% 2 23.6% 236 23 6 (23.6% female evaluations Thus rates significant 3 CONCLUSION 1 76.4 (76.4 23.6 (23.6 76. (76. 23. (23. (76 (23 (7 (2 (

RESUMO OBJETIVO O objetivo deste estudo é analisar o significado prognóstico dos antígenos do grupo sanguíneo ABO e Rh, juntamente com vários parâmetros em pacientes acompanhados com o diagnóstico de COVID-19. MÉTODOS Foram avaliados 397 pacientes que foram acompanhados e tratados devido à infecção por COVID-19. Foram analisadas as idades, gêneros, doenças crônicas, antígenos do grupo sanguíneo ABO e Rh, taxas de internação em unidades de terapia intensiva (UTI) e taxas de mortalidade dos pacientes. A idade média de 397 pacientes com COVID foi de 47 ± 17 anos. Na análise do grupo sanguíneo dos pacientes, A Rh positivo (A +) foi o tipo sanguíneo mais frequentemente observado (176 dos pacientes, 44,3%), seguido pelo O Rh positivo (0 +) (109 dos pacientes, 27,5%) 38 dos pacientes eram Rh negativos (Rh -) (9,6%). 53 dos pacientes (13,4%) foram acompanhados em UTI e 29 faleceram (7,3%). Não houve mortalidade nem admissão na UTI para o grupo Rh. A comparação dos grupos Rh quanto à necessidade de admissão na UTI revelou uma taxa significativamente alta de admissão na UTI no grupo Rh + (p = 0,011), enquanto não foi encontrada relação significativa entre mortalidade e antígeno Rh (p = 0,069). CONCLUSÃO O tipo sanguíneo mais frequentemente observado foi o A + entre os pacientes com COVID-19. O grupo sanguíneo Rh + foi encontrado em todos os casos admitidos na UTI e com evolução mortal. O grupo sanguíneo Rh + foi encontrado em um número significativamente alto de pacientes internados na UTI, enquanto nenhuma relação significativa foi encontrada entre a mortalidade e o grupo sanguíneo Rh.

SUMMARY AIM The 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. METHODS We 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. FINDINGS The 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). CONCLUSION The 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.