RESUMO
<p><b>OBJECTIVE</b>To investigate the changes in red blood cell count in patients with different liver diseases and the correlation between red blood cell count and degree of liver damage.</p><p><b>METHODS</b>The clinical data of 1427 patients with primary liver cancer, 172 patients with liver cirrhosis, and 185 patients with hepatitis were collected, and the Child-Pugh class was determined for all patients. The differences in red blood cell count between patients with different liver diseases were retrospectively analyzed, and the correlation between red blood cell count and liver function status was investigated. The Mann-Whitney U test, Kruskal-Wallis H test, rank sum test, Spearman rank sum correlation test, and chi-square test were performed for different types of data.</p><p><b>RESULTS</b>Red blood cell count showed significant differences between patients with chronic hepatitis, liver cancer, and liver cirrhosis and was highest in patients with chronic hepatitis and lowest in patients with liver cirrhosis (P < 0.05). In the patients with liver cirrhosis, red blood cell count tended to decrease in patients with a higher Child-Pugh class (P < 0.05).</p><p><b>CONCLUSION</b>For patients with liver cirrhosis, red blood cell count can reflect the degree of liver damage, which may contribute to an improved liver function prediction model for these patients.</p>