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The initiating event in hypoxic pulmonary hypertension is felt to be sustained hypoxic vasoconstriction, ultimately leading to vascular remodeling and fixed pulmonary hypertension. During the initial vasospastic phase endogenous vasodilatory pathways…

We recently observed that acute systemic hypoxia produces rapid increases in leukocyte adherence in the mesenteric microcirculation of the anesthetized rat Wood JG, Johnson JS, Mattioli LF, and Gonzalez NC. J Appl Physiol 87: 1734-1740, 1999; Wood…