A contraceptive that does not contain estrogen has been recommended for a client with a history of deep vein thrombosis, but the client does not know why

Question

Which statement by the nurse best explains the relationship of estrogen to thromboembolic events?
1. "Estrogen causes the bone marrow to form more red blood cells, which then increase the chance of blood cells clumping together and forming a clot."
2. "Estrogen increases vascular vasoconstriction, which restricts blood flow and increases the opportunity for blood clots to form."
3. "Estrogen causes several clotting factors to increase in the blood, which increases the chances of a blood clot occurring."
4. "Estrogen decreases the force of blood flowing through the blood vessels, which increases the chances of blood clot formation."

Answer 1

Correct Answer: 3
Rationale 1: Estrogen does not increase bone marrow formation of red blood cells.
Rationale 2: Estrogen does not increase vasoconstriction.
Rationale 3: Estrogen increases the risk of thromboembolic events.
Rationale 4: Estrogen does not decrease the force of blood flow.
Global Rationale: Estrogen increases the risk of thromboembolic events. They do not increase formation of red blood cells, increase vasoconstriction, or decrease the force of blood flow.