What is true about the morula stage of development?

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: The correct answer is B: Clear, with small white particles. Amniotic fluid is typically clear with small white particles, representing vernix caseosa. Vernix caseosa is a white, cheese-like substance that covers the skin of the fetus. It helps protect the skin and regulate body temperature. The presence of vernix particles in amniotic fluid is a normal and expected characteristic. Incorrect choices: A: Deep yellow color - Amniotic fluid is usually clear or slightly straw-colored. A deep yellow color may indicate the presence of meconium, which suggests fetal distress. C: Nitrazine test: acidic result - Amniotic fluid is normally alkaline, not acidic. An acidic result may indicate infection. D: Absence of ferning - Ferning is a characteristic pattern seen under a microscope in dried cervical mucus, not amniotic fluid. Absence of ferning in amniotic fluid is not a relevant characteristic.

Correct Answer: D

Rationale: The correct answer is D: To treat hypotension that results from sympathetic blockade. When an epidural block is administered during labor, sympathetic blockade can lead to a drop in blood pressure. By providing intravenous fluid, the goal is to increase preload and maintain blood pressure to counteract the hypotension caused by sympathetic blockade. A: Treating hypotension from hemorrhage is not the primary purpose in this scenario. B: Increasing urine output is not the main goal of giving intravenous fluid during an epidural block. C: Treating insensible fluid losses is not the immediate concern when a patient is experiencing hypotension from sympathetic blockade.

Correct Answer: A

Rationale: The correct answer is A: Administer a bolus of IV fluids. Hypotension after an epidural block is often due to vasodilation caused by the block. Administering IV fluids can help increase blood volume and improve blood pressure. This action is crucial in maintaining perfusion to vital organs. Choice B: Placing the patient in a Trendelenburg position can potentially worsen hypotension by increasing venous return to the heart, leading to further vasodilation and reduced blood pressure. Choice C: Administering oxygen via mask may be important in some situations but is not the primary intervention for hypotension caused by epidural block. Choice D: Raising the head of the bed slightly is not the best option for treating hypotension as it does not address the underlying cause of vasodilation and decreased blood pressure.

Correct Answer: B

Rationale: The correct answer is B: Placenta previa. In placenta previa, the placenta partially or completely covers the cervix, leading to painless vaginal bleeding. Placental abruption (choice A) presents with painful bleeding. Uterine rupture (choice C) typically causes severe abdominal pain. Cervical laceration (choice D) usually occurs during delivery and is not typically associated with painless bleeding during labor. Placenta previa is the most likely cause in this scenario due to painless bleeding and the absence of contractions.