Teratogenic causes of congenital abnormalities include

Correct Answer: C

Rationale: The correct answer is C because radiation and substances of abuse are known teratogenic causes of congenital abnormalities. Radiation exposure can lead to genetic mutations and developmental issues in the fetus. Substances of abuse like alcohol, tobacco, and illicit drugs can also negatively impact fetal development. A: Medical conditions and pesticides may have negative effects on pregnancy outcomes, but they are not typically classified as teratogenic causes of congenital abnormalities. B: Prescription drugs can be teratogenic in some cases, but not all prescription drugs have harmful effects on fetal development. Chromosomes are not typically considered teratogenic causes. D: Disordered genes can lead to congenital abnormalities, but they are not classified as teratogenic causes. Medical conditions are not universally teratogenic.

Correct Answer: A

Rationale: The correct answer is A: Persistent vomiting or nausea. Hyperemesis gravidarum is a severe form of morning sickness characterized by persistent vomiting and nausea during pregnancy. This is the main clinical feature due to hormonal changes and increased sensitivity to certain odors. Choice B is incorrect as sight-related problems are not a typical feature of hyperemesis gravidarum. Choice C is incorrect as persistent diarrhea is not a defining feature of this condition. Choice D is incorrect as frequency or urgency of micturition is not a primary symptom of hyperemesis gravidarum.

Correct Answer: A

Rationale: The correct answer is A: Wernicke's encephalopathy. Hyperemesis gravidarum is severe nausea and vomiting during pregnancy. Wernicke's encephalopathy is a neurological complication due to thiamine deficiency, which can occur in severe cases of vomiting, leading to impaired brain function. Sheehan's syndrome is a complication of postpartum pituitary necrosis. Maurice encephalitis is a fictional term not related to this context. Antepartum bleeding is not a typical complication of hyperemesis gravidarum. Therefore, the correct answer is A due to the potential neurological impact of severe vomiting on thiamine levels.

Correct Answer: C

Rationale: The correct answer is C because radiation and substances of abuse are known teratogenic causes of congenital abnormalities. Radiation exposure can lead to genetic mutations and developmental issues in the fetus. Substances of abuse like alcohol, tobacco, and illicit drugs can also negatively impact fetal development. A: Medical conditions and pesticides may have negative effects on pregnancy outcomes, but they are not typically classified as teratogenic causes of congenital abnormalities. B: Prescription drugs can be teratogenic in some cases, but not all prescription drugs have harmful effects on fetal development. Chromosomes are not typically considered teratogenic causes. D: Disordered genes can lead to congenital abnormalities, but they are not classified as teratogenic causes. Medical conditions are not universally teratogenic.

Correct Answer: B

Rationale: The correct answer is B: Hyperbaric oxygen. Hyperbaric oxygen therapy is the most effective treatment for pneumatosis as it helps to reduce gas cysts by increasing oxygen levels in the tissues. This promotes healing and resolution of the condition. A: Several days of oxygen by face mask - Regular oxygen therapy is not as effective as hyperbaric oxygen in treating pneumatosis. C: Surgical resection - Surgical resection is not typically the first-line treatment for pneumatosis and is usually reserved for severe cases or complications. D: Treatment of underlying disease - While treating the underlying disease is important, it may not directly address the gas cysts in the gastrointestinal tract. Hyperbaric oxygen therapy targets the gas cysts specifically.

Correct Answer: D

Rationale: The correct answer is D, "All of the above." Postpartum hemorrhage can be caused by uterine atony, which is the failure of the uterus to contract after delivery; retained placenta, where parts of the placenta remain in the uterus; and vaginal trauma, such as tears or lacerations during delivery. Each of these factors can contribute to excessive bleeding after childbirth. Therefore, selecting all the choices is necessary to encompass the main causes of postpartum hemorrhage.

Correct Answer: C

Rationale: The correct answer is C: Couvelaire uterus. This condition refers to the bruised and edematous appearance of the uterus associated with placental abruption. Placental abruption occurs when the placenta separates from the uterine wall prematurely, leading to bleeding and a compromised blood supply to the uterus. The bruised appearance is due to blood infiltrating the myometrium. Explanation for other choices: A: Wernicke’s encephalopathy - This is a neurological disorder caused by thiamine deficiency, not related to uterine issues. B: Uterine prolapse - This is the descent or herniation of the uterus into or beyond the vaginal canal, not related to placental abruption. D: Asherman’s syndrome - This is characterized by intrauterine adhesions or scar tissue, typically a result of uterine surgery, not associated with placental abruption.

Correct Answer: B

Rationale: In uterine inversion, the fundus is the last part to be replaced due to its position being the deepest inside the vagina. The fundus is the upper portion of the uterus and is the last part to invert back into its normal position. The cervix, isthmus, and body are parts of the uterus that are more easily replaced during the process of uterine inversion. The fundus being the final part to be replaced ensures the uterus is fully restored to its correct orientation.

Correct Answer: B

Rationale: The correct answer is B: Occipito posterior position. Forceps delivery may be indicated in this situation to help rotate the baby's head and facilitate delivery. Occipito posterior position can lead to prolonged labor and fetal distress, making forceps delivery necessary for a safe delivery. Incorrect choices: A: Cephalopelvic disproportion is not an indication for forceps delivery as it refers to mismatch between the size of the baby's head and the mother's pelvis. C: Breech presentation typically requires a different approach such as cesarean section rather than forceps delivery. D: Placenta abruption, a medical emergency, would not be managed with forceps delivery but rather require immediate intervention to prevent harm to both the mother and baby.