A Todd-Prokopek

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Regional distribution of ventilation and perfusion were measured in 17 hypoxemic and 16 normoxic patients using 13N as tracer. The effect of 100% and 50% O2 breathing was tested. No variation was observed in normoxic patients. In hypoxemic patients, perfusion was not modified significantly during O2 breathing. Poorly-ventilated zones hypoventilated even(More)
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