| Summary: | Shewaneh Damtie, Lemma Workineh, Teklehaimanot Kiros, Tahir Eyayu, Tegenaw Tiruneh Debre Tabor University, College of Health Sciences, Department of Medical Laboratory Science, Debre Tabor, EthiopiaCorrespondence: Shewaneh DamtieDebre Tabor University, College of Health Sciences, Department of Medical Laboratory Science, Debre Tabor, EthiopiaTel +251 918735194Email yeshiworkazene@yahoo.comBackground: Hematological abnormalities have been associated with an increased risk of disease progression and death in people living with human immunodeficiency virus (HIV). The use of antiretroviral medications can have a positive or negative effect on the hematological disorder. However, little is known about its impact on hematological parameters in antiretroviral-treated patients in Ethiopia, especially in the study area.Methods: A cross-sectional study was conducted at Debre Tabor Comprehensive Specialized Hospital from September to November 2020. A total of 334 HIV-infected patients taking highly active antiretroviral treatment (HAART) at least for 6 months were selected using a simple random sampling technique. Socio-demographic and clinical characteristics of the study subjects were collected using a semi-structured questionnaire. Hematological and immunological parameters were determined using Sysmex kx-21 hematology analyzer and BD FACS count CD4 analyzer, respectively. Statistical analysis was done using SPSS version 20 statistical software. A P-value < 0.05 was considered statistically significant.Results: A total of 334 HIV patients were included in this study. The prevalence of anemia, leucopenia, neutropenia, lymphopenia and thrombocytopenia were 37.1%, 22.8%, 8.4%, 10.5% and 17.1% before initiation of HAART and 17.4%, 34.2%, 18.8%, 13.1% and 8.3% after initiation of HAART, respectively. There was a significant difference in total white blood cell (WBC) count, absolute neutrophil count (ANC), red blood cell (RBC) count, hemoglobin value, mean cell volume (MCV), mean cell hemoglobin (MCH), mean cell hemoglobin concentration (MCHC), red cell distribution width (RDW), platelet and CD4+ T cell counts in HIV patients before and after initiation of HAART (P< 0.05).Conclusion: The most common hematological abnormalities observed in this study before and after HAART initiation were anemia, leucopenia, neutropenia, lymphopenia, and thrombocytopenia. However, after beginning HAART, the prevalence of anemia and thrombocytopenia decreased dramatically.Keywords: HIV, anemia, leucopenia, thrombocytopenia, HAART
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