THE BLOOD PICTURE IN OTITIC INFECTIONS

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Abstract
This study was undertaken with a view to determine the value of the blood picture in various types of otogenic conditions, both infectious and noninfectious. The otologist does not ordinarily depend on the blood picture for his diagnosis. The presence of definite changes in the ear and of certain clinical signs and symptoms seem, as a rule, a sufficient basis on which to determine whether surgical intervention is indicated. In some cases of deep-seated suppuration, mastoiditis and sinus thrombosis, however, the clinical evidence may be misleading, and it is in these cases that laboratory aids such as blood culture, sedimentation time and study of the blood picture become of diagnostic and, possibly, of prognostic importance. REVIEW OF THE LITERATURE The value of the ordinary blood count, i. e., the number of white blood cells and the differential count, especially the polymorphonuclear neutrophils, has long been established by Ehrlich,1

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