Blood Transfusion and Cesarean Delivery

Rouse, Dwight J.; MacPherson, Cora; Landon, Mark B.; Varner, Michael W.; Leveno, Kenneth J.; Moawad, Atef H.; Spong, Catherine Y.; Caritis, Steve N.; Meis, Paul J.; Wapner, Ronald J.; Sorokin, Yoram; Miodovnik, Menachem; Carpenter, Marshall W.; Peaceman, Alan M.; O'Sullivan, Mary Jo; Sibai, Baha M.; Langer, Oded; Thorp, John M., Jr.; Ramin, Susan M.; & Mercer, Brian M., for the National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network. (2006). Blood Transfusion and Cesarean Delivery. Obstetrics & Gynecology, 108(4), 891-7.

Rouse, Dwight J.; MacPherson, Cora; Landon, Mark B.; Varner, Michael W.; Leveno, Kenneth J.; Moawad, Atef H.; Spong, Catherine Y.; Caritis, Steve N.; Meis, Paul J.; Wapner, Ronald J.; Sorokin, Yoram; Miodovnik, Menachem; Carpenter, Marshall W.; Peaceman, Alan M.; O'Sullivan, Mary Jo; Sibai, Baha M.; Langer, Oded; Thorp, John M., Jr.; Ramin, Susan M.; & Mercer, Brian M., for the National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network. (2006). Blood Transfusion and Cesarean Delivery. Obstetrics & Gynecology, 108(4), 891-7.

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OBJECTIVE: To evaluate risks for intraoperative or postoperative packed red blood cell transfusion in women who underwent cesarean delivery.

METHODS: This was a 19-university prospective observational study. All primary cesarean deliveries from January 1, 1999, to December 31, 2000, and all repeat cesareans from January 1, 1999, to December 31, 2002, were included. Trained, certified research nurses performed systematic data abstraction. Primary and repeat cesarean deliveries were analyzed separately. Univariable analyses were used to inform multivariable analyses.

RESULTS: A total of 23,486 women underwent primary cesarean delivery, of whom 762 (3.2%) were transfused (median 2 units, 25th% to 75th% 2–3 units). A total of 33,683 women underwent primary cesarean delivery, and 735 (2.2%) were transfused (median 2 units, 25th% to 75th% 2–4 units). Among primary cesareans, general anesthesia (odds ratio [OR] 4.2, 95% confidence interval [CI] 3.5–5.0), placenta previa (OR 4.8, CI 3.5–6.5) and severe (hematocrit less than 25%) preoperative anemia (OR 17.0, CI 12.4–23.3) increased the odds of transfusion. Among repeat cesareans, the risk was increased by general anesthesia (OR 7.2, CI 5.9–8.7), a history of five or more prior cesareans (OR 7.6, CI 4.0–14.3), placenta previa (OR 15.9, CI 12.0–21.0), and severe preoperative anemia (OR 19.9, CI 14.5–27.2).

CONCLUSION: Overall, the risk of transfusion in association with cesarean is low. However, both severe preoperative maternal anemia and placenta previa are associated with markedly increased risks. The former argues for optimizing maternal antenatal iron status to avoid severe anemia and the latter for careful perioperative planning when previa complicates cesarean.




JOUR



Rouse, Dwight J.
MacPherson, Cora
Landon, Mark B.
Varner, Michael W.
Leveno, Kenneth J.
Moawad, Atef H.
Spong, Catherine Y.
Caritis, Steve N.
Meis, Paul J.
Wapner, Ronald J.
Sorokin, Yoram
Miodovnik, Menachem
Carpenter, Marshall W.
Peaceman, Alan M.
O'Sullivan, Mary Jo
Sibai, Baha M.
Langer, Oded
Thorp, John M., Jr.
Ramin, Susan M.
Mercer, Brian M., for the National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network



2006


Obstetrics & Gynecology

108

4

891-7










3027

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