What is the recommended SpO2 range to maintain in children according to the American Heart Association's 2020 Pediatric Advanced Life Support Guidelines?
94
90
99
85
The Correct Answer is A
This question addresses pediatric respiratory management and oxygen therapy protocols. Knowledge of the American Heart Association 2020 guidelines is required to identify the target oxygen saturation levels that balance tissue oxygenation while avoiding the physiological risks of hyperoxia or hypoxia.
Choice A rationale
The guidelines recommend maintaining oxygen saturation at 94 percent or higher. This level ensures adequate arterial oxygen content for systemic delivery while minimizing the risks of lung injury or oxidative stress associated with excessive supplemental oxygen administration in children.
Choice B rationale
A saturation of 90 percent is generally considered hypoxic for a stable pediatric patient. Lower levels can trigger pulmonary vasoconstriction and impair metabolic processes, potentially leading to cellular dysfunction or cardiovascular instability if the underlying cause of hypoxia is not corrected.
Choice C rationale
While 99 percent is within normal limits, the guidelines emphasize titrating oxygen to maintain at least 94 percent. Aiming for 99 percent often involves unnecessary high-flow oxygen, which can cause hyperoxic tissue damage and suppress the natural respiratory drive.
Choice D rationale
An SpO2 of 85 percent indicates significant hypoxemia and requires immediate intervention. Normal ranges are typically 95 to 100 percent. Prolonged levels at 85 percent result in anaerobic metabolism, lactic acidosis, and potential end-organ damage due to insufficient oxygen supply.
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Related Questions
Correct Answer is D
Explanation
Cognitive development involves the transition from purely sensory experiences to abstract reasoning. Knowledge of Piaget's stages is applied here to identify the specific period where children overcome egocentrism and begin utilizing inductive logic to solve concrete, physical problems.
Choice A rationale
The preoperational stage, occurring from ages two to seven, is marked by symbolic thought and egocentrism. Children in this stage cannot yet perform mental operations or think logically about the physical properties of objects or events.
Choice B rationale
The formal operational stage begins in adolescence and involves abstract thinking and hypothetical-deductive reasoning. Logic is applied to unseen possibilities and complex ideological concepts, going beyond the concrete events described in the specific question scenario.
Choice C rationale
The sensorimotor stage occurs from birth to age two and focuses on coordinating sensory experiences with physical motor actions. Logical thought has not yet developed, as the infant is primarily learning about object permanence and basic causality.
Choice D rationale
The concrete operational stage, from ages seven to eleven, is when children develop the ability to think logically about tangible objects and visible events. They understand conservation, reversibility, and can categorize items based on physical, concrete characteristics.
Correct Answer is A
Explanation
The nurse must apply knowledge of pediatric cardiac rehabilitation post-surgical repair of an atrial septal defect. Effective repair restores normal hemodynamics, allowing children to engage in physical activities. Assessment of the child's tolerance is essential to ensure safety during aerobic team sports.
Choice A rationale
Successful surgical closure of an atrial septal defect typically restores normal cardiac function and pulmonary pressures. Once fully recovered, children are encouraged to lead active lives and participate in team sports according to their individual physical stamina and tolerance.
Choice B rationale
Restricting a child to individual sports is medically unnecessary following a successful surgical repair. Unless specific complications like residual pulmonary hypertension exist, there is no physiological reason to forbid team sports, which promote essential social and physical development.
Choice C rationale
Limiting the child to basic activities like bike riding is overly restrictive post-repair. While low-impact activities are safe, most children can resume full athletic participation. Avoiding sports altogether can lead to physical deconditioning and unnecessary psychosocial isolation.
Choice D rationale
Prohibiting all sports participation is incorrect because surgical repair aims to permit a normal lifestyle. Complete restriction is only indicated in rare cases of severe heart failure or significant arrhythmias, which are not standard outcomes for ASD repair.
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