The nurse is providing education for a client who is prescribed biphasic oral contraceptives. What does this type of oral contraceptive contain?
1. Constant estrogen with an increase in progestin at the end of the cycle
2. Progestin only
3. Constant amounts of estrogen and progestin
4. Both estrogen and progestin, varying in three distinct phases
Correct Answer: 1
Rationale 1: In biphasic agents, the amount of estrogen in each pill remains constant, but the amount of progestin is increased toward the end of the menstrual cycle to better nourish the uterine lining.
Rationale 2: Progestin only does not describe a biphasic oral contraceptive.
Rationale 3: Constant amounts of estrogen and progestin describes a monophasic oral contraceptive.
Rationale 4: Both estrogen and progestin, varying in three distinct phases describes a triphasic oral contraceptive.
Global Rationale: In biphasic agents, the amount of estrogen in each pill remains constant, but the amount of progestin is increased toward the end of the menstrual cycle to better nourish the uterine lining. Progestin only does not describe a biphasic oral contraceptive. Constant amounts of estrogen and progestin describes a monophasic oral contraceptive. Both estrogen and progestin, varying in three distinct phases describes a triphasic oral contraceptive.
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