What is the role of hCG injections in fertility treatments?

Correct Answer: B

Rationale: The correct answer is B: To trigger the release of mature eggs from the ovary. hCG injections are commonly used in fertility treatments to induce ovulation by mimicking the hormone LH, which triggers the release of mature eggs from the ovary. This is crucial for assisted reproductive techniques like in vitro fertilization. A: Incorrect. hCG injections do not prevent ovulation; instead, they promote it. C: Incorrect. hCG injections do not directly enhance the quality of embryos. D: Incorrect. hCG injections are not used to suppress uterine contractions post-implantation; they are primarily for ovulation induction.

Correct Answer: A

Rationale: Correct Answer: A Rationale: 1. Moderate caffeine intake is generally considered safe during preconception as excessive intake may affect fertility. 2. Studies show that moderate caffeine consumption doesn't significantly impact fertility. 3. Advising complete elimination may be overly restrictive and challenging for patients. 4. Caffeine can affect both male and female fertility, not just male fertility. 5. Emphasizing moderation allows for informed decision-making and realistic lifestyle changes. Summary of other choices: B: Incorrect - Caffeine does not improve ovulation or increase conception chances. C: Incorrect - Complete elimination of caffeine is unnecessary for successful conception. D: Incorrect - Caffeine intake can affect both male and female fertility, not limited to male fertility.

Correct Answer: B

Rationale: The correct answer is B: FET involves transferring previously frozen embryos into the uterus. This is because FET is a process where frozen embryos from a previous IVF cycle are thawed and transferred into the uterus. The other choices are incorrect: A is false as hormone injections may not be required daily, C is false as FET can be done for various reasons beyond just natural conception issues, and D is false as success is not guaranteed in any fertility treatment.

Correct Answer: B

Rationale: The purpose of using a GnRH antagonist in fertility treatments is to prevent premature ovulation during controlled ovarian stimulation. GnRH antagonists work by blocking the release of luteinizing hormone (LH), which can trigger premature ovulation. This allows for better control of the timing of ovulation in assisted reproductive techniques. Choice A is incorrect because GnRH antagonists do not trigger ovulation directly; they prevent it. Choice C is incorrect because stimulating the growth of the uterine lining is typically achieved through other medications like estrogen. Choice D is incorrect because GnRH antagonists do not directly improve egg quality; they primarily target ovulation timing.

Correct Answer: B

Rationale: The correct answer is B because estrogen plays a crucial role in thickening the uterine lining, creating a supportive environment for embryo implantation during IVF. This is essential for successful pregnancy. Estrogen does not directly regulate ovarian stimulation protocols (choice A), prevent premature ovulation (choice C), or eliminate the need for progesterone support post-transfer (choice D). Estrogen primarily focuses on preparing the uterus for implantation rather than affecting other aspects of the IVF process.