Concentration of C-reactive protein (CRP) and immunoglobulin A (IgA) in blood serum of patients with acute purulent sinusitis was investigated. The next step was to study the correlation between the concentration of CRP, IgA and the type of the reaction of adaptation. There are two main types of the reaction of adaptation: stress and anti-stress, which based on the sign of lymphocytic index. We investigated the positive correlation between the level of CPR > 10 mg/l and stress-reaction of adaptation (63,0 %) in the patients with acute purulent sinusitis vs the level of CPR < 10 mg/l (12,9 %). The different is significant, р < 0,001. The chances of appearance the stress-reaction in the patients with acute purulent sinusitis (CPR > 10 mg/l) are 11,5: 1 (OR = 11,5; p < 0,001). High concentrations of serum IgA have positive correlation with anti-stress-reaction of adaptation (OR = 16,0; p = 0,003). Our study confirmed the prognostic value of CRP and IgA for the prognosis and adequate tactic of treatment of patients with acute purulent sinusitis.
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