[A model of the isolated blood perfused lung of rats in testing hypoxic pulmonary vasoconstriction]

Comparing two variants of models (in situ, ex situ) of the isolated blood-perfused rat lung for measurement of the hypoxic pulmonary vasoconstriction the in situ preparation gave better results. The optimal severity of hypoxia was 2% O2 in intervals (hypoxia and normoxia, respectively) of seven minutes. The model works sufficiently for two hours.