Following a normal spontaneous vaginal delivery (NSVD), a 28 year old G3 now P3 mother develops sudden onset shortness of breath, hypoxia and cyanosis. The delivery room nurse quickly recognizes these symptoms as possible:
Select one:
Manifestations of uteroplacental insufficiency.
Manifestations of prolapsed cord.
Manifestations of anaphylactoid syndrome of pregnancy.
Manifestations of an acute asthmatic episode.
The Correct Answer is C
Choice A Reason: Manifestations of uteroplacental insufficiency. This is an incorrect answer that describes a different condition that affects the fetus, not the mother. Uteroplacental insufficiency is a condition where the placenta fails to deliver adequate oxygen and nutrients to the fetus, which can result in fetal growth restriction, distress, or demise. Uteroplacental insufficiency does not cause shortness of breath, hypoxia, or cyanosis in the mother.
Choice B Reason: Manifestations of prolapsed cord. This is an incorrect answer that refers to another condition that affects the fetus, not the mother. Prolapsed cord is a condition where the umbilical cord slips through the cervix before the baby and becomes compressed by the fetal head, which can reduce oxygen flow to the fetus. Prolapsed cord does not cause shortness of breath, hypoxia, or cyanosis in the mother.
Choice C Reason: Manifestations of anaphylactoid syndrome of pregnancy. This is because anaphylactoid syndrome of pregnancy, also known as amniotic fluid embolism, is a rare and fatal condition where amniotic fluid enters into the maternal bloodstream and causes an allergic reaction, which can lead to respiratory failure, cardiac arrest, coagulopathy, and coma. Anaphylactoid syndrome of pregnancy can occur during or after labor and delivery, especially in cases of NSVD, multiparity, advanced maternal age, or placental abruption.
Choice D Reason: Manifestations of an acute asthmatic episode. This is an incorrect answer that assumes that the mother has a history of asthma or an allergic trigger. Asthma is a chronic inflammatory disorder of the airways that causes wheezing, coughing, chest tightness, and dyspnea. Asthma can be exacerbated by pregnancy or labor, but it is not a common cause of sudden onset respiratory distress in the postpartum period.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason: Retained placental fragments. This is an incorrect answer that refers to a different cause of late postpartum hemorrhage, which is less common than uterine atony. Retained placental fragments are pieces of placenta that remain atached to the uterine wall after delivery, which prevent uterine contraction and involution, and provide a source of bleeding and infection. Retained placental fragments can be caused by abnormal placentation (such as placenta accreta), manual removal of placenta, or incomplete separation of placenta.
Choice B Reason: Cervical or vaginal lacerations. This is an incorrect answer that refers to a different cause of late postpartum hemorrhage, which is more likely to cause early postpartum hemorrhage than late postpartum hemorrhage. Cervical or vaginal lacerations are tears or cuts in the cervix or vagina that occur during delivery, which can cause bleeding from the damaged blood vessels. Cervical or vaginal lacerations can be caused by rapid or instrumental delivery, large or malpositioned fetus, or episiotomy.
Choice C Reason: Uterine inversion. This is an incorrect answer that refers to a different cause of late postpartum hemorrhage, which is rare and life-threatening. Uterine inversion is a condition where the uterus turns inside out and protrudes through the cervix and vagina after delivery, which can cause massive bleeding and shock. Uterine inversion can be caused by excessive traction on the umbilical cord, fundal pressure, or uterine relaxation.
Choice D Reason: Uterine atony. This is because uterine atony is a condition where the uterus fails to contract and retract after delivery, which leads to bleeding from the placental site. Uterine atony is the most common cause of late postpartum hemorrhage, accounting for about 75% of cases. Late postpartum hemorrhage is excessive bleeding from the uterus or genital tract that occurs more than 24 hours but less than 12 weeks after delivery. Late postpartum hemorrhage can be caused by retained placental fragments, subinvolution of the uterus, infection, or coagulation disorders.
Correct Answer is B
Explanation
Choice A Reason: Physiologic anemia due to maternal increased plasma volume. This is an incorrect answer that refers to a different condition that affects hemoglobin levels, not blood pressure. Physiologic anemia is a condition where the maternal plasma volume increases more than the red blood cell mass during pregnancy, which dilutes the hemoglobin concentration and lowers the hematocrit value. Physiologic anemia does not cause significant symptoms or complications in pregnant women, as it is an adaptive mechanism that enhances oxygen delivery and prevents fluid overload.
Choice B Reason: Pressure of the gravid uterus on the maternal inferior vena cava and aorta. This is because this statement explains the cause of supine hypotensive syndrome, which is a condition where lying flat on the back causes compression of the major blood vessels by the gravid uterus, which reduces venous return and cardiac output, which lowers blood pressure and perfusion to vital organs. Supine hypotensive syndrome can cause symptoms such as dizziness, lightheadedness, nausea, pallor, or syncope in pregnant women, especially in the third trimester.
Choice C Reason: Pressure of the presenting fetal part on the maternal diaphragm. This is an incorrect answer that indicates a different condition that affects respiratory function, not blood pressure. Pressure of the presenting fetal part on the maternal diaphragm is a result of cephalic engagement or lightening, which occurs when the fetal head descends into the pelvis and occupies more space in the abdominal cavity. Pressure of the presenting fetal part on the maternal diaphragm can cause symptoms such as dyspnea, heartburn, or rib pain in pregnant women.
Choice D Reason: A 50% increase in maternal blood volume during pregnancy. This is an incorrect answer that describes a normal physiological change that occurs during pregnancy, not a cause of supine hypotensive syndrome. A 50% increase in maternal blood volume during pregnancy is due to increased production of plasma and red blood cells, which helps meet the increased oxygen and nutrient demands of the fetus and placenta, and prepares the mother for blood loss during delivery. A 50% increase in maternal blood volume during pregnancy does not cause hypotension or dizziness in pregnant women.
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