6973
This is the mechanism whereby high altitude dwellers have higher hematocrits than sea-level residents , and also why persons with pulmonary insufficiency or right-to-left shunts in the heart ( through which venous blood by-passes the lungs and goes directly into the systemic circulation ) have similarly high hematocrits .
 disease: pulmonary insufficiency
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Answer:
 disease: pulmonary insufficiency