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Table 1 Classification of three types of hypermia described by Graf R, et al.

From: Microvessel changes after post-ischemic benign and malignant hyperemia: experimental study in rats

Classification Manifestation Quality
Type 1 showed immediate hyperperfusion lasting for the whole observation period and covering a large part of the ischemic territory malignant hyperemia
Type 2 hyperperfusion was transient, and was often followed by hypoperfusion in some parts of the previously hyperperfused regions benign hyperemia
Type 3 hyperperfused regions grew progressively benign hyperemia