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Calculated blood loss in severe obstetric hemorrhage and its relation to body mass index
Jennifer S Hernandez1, James M Alexander, Ravindra Sarode
1Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, 75235-9032, USA. jennifer.hernandez@utsouthwestern.edu
Objective:
To evaluate total calculated blood loss at the time of severe obstetric hemorrhage.
Study Design:
This is a prospective observational study of women with obstetric hemorrhage. Women who received a blood transfusion for hypovolemia and those in which a body mass index (BMI) could be calculated were included. Total blood volume lost was calculated. Blood loss was analyzed in relation to maternal size as reflected in the BMI.
Results:
Fourteen hundred forty-three women meeting inclusion criteria delivered at our hospital between March 2002 and June 2006. The median calculated volume of blood lost was 3529 mL, and 93% of women sustained losses ≥3000 mL. The blood loss sufficient to provoke signs and symptoms of hypovolemia was proportional to the woman's BMI.
Conclusion:
Women who develop hypovolemia during childbirth have suffered very large losses of blood, and infusion of blood products is required to restore circulation and prevent further morbidity.
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