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Are heart surgery patients losing too much blood to tests?

from HealthDay News

Heart surgery patients often undergo dozens of blood tests while they're hospitalized, potentially losing half a liter of blood or more over time, a new study reports. Patients may not realize they're losing so much blood because the blood tests are typically taken through an IV. But the study authors, who were "astonished by the extent of bloodletting," wrote that the loss of blood could lead to longer stays in the hospital. Blood loss can also lead to transfusions and anemia, requiring more treatment and higher costs, the researchers suggested. more

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