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  • Title: Comparison of electrocardiograms of chickens infected with viscerotropic velogenic Newcastle disease virus and virulent avian influenza virus.
    Author: Mitchell BW, Brugh M.
    Journal: Am J Vet Res; 1982 Dec; 43(12):2274-8. PubMed ID: 6219600.
    Abstract:
    Electrocardiograms of chickens infected with viscerotropic velogenic Newcastle disease virus (NDV) or virulent avian influenza virus (AIV) were characterized and compared. The ECG were monitored by radiotelemetry and were recorded twice daily before virus infection and during the course of the infection. Thirteen lead II intervals, segments, and amplitudes were measured and analyzed. The ECG of NDV-infected chickens were characterized by lengthened (P less than or equal to 0.05) ST segments and increased (P less than or equal to 0.05) P amplitudes. The ECG of AIV-infected chickens were characterized by lengthened (P less than or equal to 0.05) RS intervals, ST segments, TP intervals, and PR segments and by increased (P less than or equal to 0.05) P amplitudes. The TP intervals and PR segments of ECG of AIV-infected chickens were significantly (P less than or equal to 0.05) longer than those of NDV-infected chickens. The pronounced conduction delays indicated in the ECG of AIV-infected chickens may have diagnostic importance.
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