A nurse teaches a postpartum woman about her risk for thromboembolism. Which of the following would the nurse be least likely to include as a factor increasing her risk?

Choice A rationale Increased clotting factors in the postpartum period is a physiological adaptation that elevates the risk for thromboembolism. Specifically, levels of fibrinogen, factors VII, VIII, and X are often significantly elevated, initiating hypercoagulability. This protective mechanism limits postpartum hemorrhage but unfortunately also predisposes the client to venous thrombus formation, especially when coupled with vessel damage or stasis. Choice B rationale Immobility, particularly extended bed rest or reduced activity following a complicated delivery (e.g., cesarean section), significantly contributes to venous stasis. Stasis impedes blood flow, increasing contact time between coagulation factors and the endothelium, promoting platelet aggregation and thrombus formation, thereby heightening the postpartum client's overall thromboembolic risk. Choice C rationale Increased red blood cell production is not a primary factor increasing the risk for thromboembolism in the postpartum period. While the blood volume increases during pregnancy, and iron stores are often utilized, the hypercoagulable state is primarily driven by changes in clotting factors and vessel health, not solely by red blood cell count, which typically returns to normal. Choice D rationale Vessel damage (endothelial injury), which commonly occurs during childbirth, particularly to the pelvic veins during vaginal delivery or uterine vessels during cesarean section, is a key component of Virchow's triad. This damage activates the intrinsic coagulation cascade, providing a nidus for platelet adhesion and the subsequent development of a potentially dangerous thrombus or embolus.