A 3-year-old boy is found to be in cardiopulmonary arrest. As you begin one-rescuer CPR, your partner prepares the AED. What is the appropriate compression to ventilation ratio for this child?

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.

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: B

Rationale: The correct answer is B. The presence of green vomit in a newborn is an abnormal finding and indicates a possible intestinal obstruction. This finding requires immediate attention and further investigation. Choices A, C, and D are normal findings in a newborn's abdomen assessment. A newborn typically has an umbilical cord with two arteries and one vein, a liver that may be palpable 1 to 2 cm below the costal margin due to its normal size in a neonate, and a soft, nondistended abdomen as expected in healthy newborns.

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: B

Rationale: To assist with the delivery of the baby's head, the correct technique involves placing your fingers on the bony part of the skull and applying gentle pressure. This method helps guide the baby's head through the birth canal safely and effectively. Choices A, C, and D are incorrect. Grasping and pulling the baby's head, rotating the head, or placing the palm of your hand against the back of the baby's skull can potentially cause harm or complications during delivery.

Correct Answer: A

Rationale: In a pediatric patient presenting with unresponsiveness, rapid, shallow respirations, thready pulses, high heart rate, and low oxygen saturation, the priority is to ensure adequate oxygenation. Ventilating the child with a bag-valve mask is crucial in this scenario to support her breathing and improve oxygenation, as indicated by her low oxygen saturation and respiratory distress. Starting chest compressions is not indicated as the child has a pulse. Administering high-flow oxygen via a non-rebreathing mask may not be as effective as providing positive pressure ventilation with a bag-valve mask in this situation. Placing her in the recovery position is not appropriate when the child is unresponsive and in respiratory distress.

Correct Answer: A

Rationale: In a child with respiratory failure, slow, irregular breathing is a common sign. Respiratory failure impairs the ability to exchange oxygen and carbon dioxide efficiently, leading to altered breathing patterns. Flushed skin, a strong cry, or unconsciousness may not be specific signs of respiratory failure and could be indicative of other conditions. Flushed skin may be a sign of fever or increased blood flow, a strong cry may indicate pain or distress, and unconsciousness can have various causes beyond respiratory failure.

Correct Answer: C

Rationale: After delivering a shock, it is crucial to immediately resume CPR. CPR helps circulate oxygenated blood to vital organs until the AED prompts you to stop for further rhythm analysis. This continuous cycle of CPR and defibrillation maximizes the chances of restoring a normal cardiac rhythm and improving the child's chances of survival. Assessing for a carotid pulse is not necessary after a shock as pulse checks are often unreliable during resuscitation. Opening the airway and ventilating is not the immediate step after delivering a shock as CPR takes precedence. Reanalyzing the cardiac rhythm should be done only when prompted by the AED after a set period of CPR.

Correct Answer: B

Rationale: A heart rate of 80 beats per minute in a 3-month-old infant is abnormally low for that age group and could indicate underlying health issues. The normal heart rate for a 3-month-old infant is typically higher, around 100-150 beats per minute. Therefore, this finding stands out as abnormal and warrants further evaluation. Choice A is not necessarily abnormal in a newly born infant as irregular breathing patterns can be common during the neonatal period. Choice C falls within the normal respiratory rate range for a 2-year-old child, which is around 20-30 breaths per minute. Choice D reflects a systolic blood pressure value within the normal range for a 10-year-old child, which is typically around 90-110 mm Hg.