The nurse knows that a normal physiologic alteration of the circulatory system associated with thromboembolic events in pregnancy is:

Choice A rationale

During pregnancy, there is an increase in fibrinogen and a decrease in fibrinolysis. These changes increase the risk of thromboembolic events, as they promote clot formation.

Choice B rationale

Increased blood volume and cardiac output are normal in pregnancy but do not directly increase the risk of thromboembolic events. They are adaptations to meet the increased metabolic demands.

Choice C rationale

Decreased hematocrit and increased RBC levels are typical in pregnancy but are related to the physiological dilution of blood, not thromboembolic risks.

Choice D rationale

Decreased blood pressure and hemoglobin are common in pregnancy due to increased blood volume but are not associated with increased thromboembolic risks. .

Choice A rationale

Lanugo is a fine hair that covers the fetus but does not primarily protect the skin from amniotic fluid exposure. It mainly helps in thermoregulation and the adherence of the vernix caseosa.

Choice B rationale

While skin care after birth is important, applying cream post-delivery does not explain why the skin is protected during gestation.

Choice C rationale

Vernix caseosa is a protective, cheese-like coating that covers the fetus's skin. It provides a barrier against the amniotic fluid, preventing maceration of the skin during the pregnancy.

Choice D rationale

Although subcutaneous fat develops in the fetus, it is not responsible for protecting the skin from amniotic fluid. The primary protective mechanism is the vernix caseosa.