What is the main function of the uterus?

Correct Answer: B

Rationale: The main function of the uterus is to house and nurture the growing fetus for approximately 40 weeks during pregnancy. It provides the necessary environment for the fetus to develop and grow until it is ready for birth. Choice A is incorrect as the cervix, not the uterus, dilates during labor to allow the baby to pass through. Choice C is incorrect as while the uterus does provide a protective environment, its primary function is not to act as a cushion. Choice D is incorrect as the placenta, not the uterus, is responsible for providing oxygen and nutrients to the fetus.

Correct Answer: B

Rationale: After a febrile seizure, the priority is to offer oxygen and provide transport to a medical facility. Oxygen may be necessary to ensure proper oxygenation, and medical evaluation is crucial to determine the cause of the seizure and prevent recurrence. Rapidly cooling the child in cold water is not recommended as it may lead to complications such as hypothermia. Keeping the child warm is also not indicated as the skin is already hot and moist. Therefore, offering oxygen and timely transportation to a healthcare facility is the most appropriate course of action. Allowing the parents to transport the child might delay necessary medical care, and keeping the child warm can exacerbate the existing heat. Rapidly cooling the child in cold water can lead to adverse effects, making it an inappropriate choice.

Correct Answer: C

Rationale: In a 5-year-old child who is unresponsive with severe bradycardia and bradypnea, the priority is to provide positive-pressure ventilation to support breathing and perform chest compressions to support circulation. This child is in cardiac arrest, and the recommended treatment according to pediatric basic life support guidelines involves a combination of positive-pressure ventilation and chest compressions to maintain oxygenation and circulation. Rapid transport to a medical facility for further advanced care is crucial in this critical situation. Choices A, B, and D are incorrect because high-flow oxygen via non-rebreathing mask, assisted ventilation with a bag-mask device, and back slaps with chest thrusts are not sufficient in a cardiac arrest situation where the child requires immediate positive-pressure ventilation and chest compressions to maintain oxygenation and circulation.

Correct Answer: D

Rationale: Grunting respirations are a key clinical sign of acute respiratory distress in infants. Grunting is a protective mechanism where the infant exhales against a partially closed glottis to increase functional residual capacity and oxygenation. This is often seen in conditions such as respiratory distress syndrome, pneumonia, or other causes of respiratory compromise in infants. Monitoring respiratory patterns like grunting is crucial for early recognition and intervention in infants with respiratory distress. Choices A, B, and C are less specific to acute respiratory distress in infants. While an elevated heart rate and respiratory rate can be present in respiratory distress, grunting respirations are a more direct indicator of significant respiratory compromise in infants.

Correct Answer: B

Rationale: After a febrile seizure, it is important to offer oxygen and provide transport to a medical facility for further evaluation and management of the underlying cause. Oxygen may be needed in case of hypoxemia resulting from the seizure. Rapidly cooling the child in cold water is not recommended as it may lead to complications such as hypothermia. Keeping the child warm is also not advisable as the priority is to prevent hyperthermia and provide necessary medical intervention by healthcare providers.

Correct Answer: D

Rationale: In cases of prolapsed umbilical cord, it is crucial to manage the situation promptly. The correct steps include lifting the baby's head off the umbilical cord to reduce pressure, placing the mother in a position that elevates her hips to relieve pressure on the cord, and ensuring that the cord stays moist. Pulling on the cord is not recommended as it can further compromise fetal circulation and should be avoided. Therefore, relieving pressure off the cord by gently pulling on it is not a recommended management approach in cases of prolapsed umbilical cord.

Correct Answer: C

Rationale: During resuscitation of an apneic infant, the appropriate ventilation rate is 12 to 20 breaths per minute. This rate helps provide adequate oxygenation and ventilation without causing harm to the infant. Choice A (8 to 10 breaths/min) is too low and may not provide sufficient ventilation. Choice B (10 to 12 breaths/min) is slightly below the recommended range, which may not be optimal for effective resuscitation. Choice D (20 to 30 breaths/min) is too high and may lead to overventilation and potential harm to the infant by causing hypocapnia.

Correct Answer: C

Rationale: Severe lower abdominal pain, light vaginal bleeding, and a history of missed periods are concerning for an ectopic pregnancy. The absence of a normal menstrual period along with these symptoms raises suspicion for an ectopic pregnancy, which requires immediate medical attention due to the risk of rupture and life-threatening complications. A normal pregnancy would typically present with different symptoms such as a positive pregnancy test and typical signs of early pregnancy. A ruptured ovarian cyst may present with similar symptoms but typically lacks the history of missed periods. A spontaneous abortion usually involves heavier bleeding and tissue passage, which is not described in this scenario.

Correct Answer: C

Rationale: Heart disease is the leading cause of death in geriatric patients. It encompasses a range of conditions affecting the heart and blood vessels, such as coronary artery disease and heart failure, which are more prevalent in older individuals. These conditions can lead to serious complications and ultimately result in higher mortality rates among the elderly population. Hypertension (choice A) is a risk factor for heart disease but not the leading cause of death in geriatric patients. Arthritis (choice B) is a chronic condition affecting the joints, not a primary cause of death in this population. Altered mental status (choice D) is a symptom rather than a leading cause of death in geriatric patients.