Correct Answer: A

Rationale: The most appropriate question to ask when assessing a geriatric patient who may have experienced an acute ischemic stroke is when the symptoms were first noticed. This information is crucial for determining the time window for potential treatments like thrombolytic therapy, as prompt intervention is necessary for stroke management. Option B is not as relevant in the acute assessment of stroke, though important for overall health history. Option C is important but may not be as time-sensitive as determining symptom onset. Option D focuses on a different cardiac event, not directly related to the current concern of a possible stroke.

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: 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: B

Rationale: The correct compression to ventilation ratio for a single rescuer performing CPR on a child is 30:2. This ratio ensures adequate circulation and oxygenation during CPR. 30 compressions help maintain blood flow, while 2 rescue breaths provide oxygenation. Choice A (3:01) is incorrect as it does not follow the standard CPR guidelines for children. Choice C (15:2) is incorrect as it is the ratio used for adult CPR. Choice D (5:1) is incorrect as it is not the recommended ratio for child CPR.