RESUMEN
<p><b>OBJECTIVE</b>To explore the changes of peripheral blood lymphocyte subsets in patients with acute hydrogen chloride gas poisoning.</p><p><b>METHODS</b>When the patients were admitted or on the secondary day, the percentages of total T-cell lymphocyte subsets (CD(3)(+)CD(19)(-)), CD(4)(+)T cells (CD(3)(+)CD(4)(+)), CD(8)(+)T cells (CD(3)(+)CD(8)(+)), B cells (CD(3)(-)CD(19)(+)) and NK cells (CD(3)(-)CD(16)(+)CD(56)(+)), and the ration of CD(4)(+)/CD(8)(+) in 37 cases with acute hydrogen chloride gas poisoning and 49 healthy controls were detected with flow cytometer.</p><p><b>RESULTS</b>The total T-cell percentage and total CD(4)(+)T cell percentage in 37 cases were significantly lower than those in 47 controls (P < 0.05). The percentages of NK cells and B lymphocytes in 37 cases significantly increased, as compared with controls (P < 0.05). The ration of CD(4)(+)/CD(8)(+) in 37 cases significantly decreased, as compared with controls (P < 0.05).</p><p><b>CONCLUSION</b>The lymphocyte subsets in the patients with acute hydrogen chloride gas poisoning changed, which could influence the immune function of patients.</p>