Which condition is a contraindication to nitrous oxide-oxygen sedation?

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Multiple Choice

Which condition is a contraindication to nitrous oxide-oxygen sedation?

Nitrous oxide-oxygen sedation relies on the child maintaining spontaneous, unobstructed breathing while the gas mixture provides anxiolysis. In severe obstructive airway disease, airflow is already compromised and air trapping is common. Giving nitrous oxide can worsen ventilation by increasing gas turnover in the obstructed airways, elevating work of breathing and the risk of CO2 retention or respiratory distress. Because of these ventilation concerns, this condition is a contraindication. Well-controlled asthma is not a contraindication, since control of airway reactivity reduces risk; age under five is not an absolute barrier, and the technique requires the child to cooperate and breathe spontaneously through the nose. If the child cannot cooperate to breathe voluntarily, nitrous oxide-oxygen sedation would not be appropriate.

Nitrous oxide-oxygen sedation relies on the child maintaining spontaneous, unobstructed breathing while the gas mixture provides anxiolysis. In severe obstructive airway disease, airflow is already compromised and air trapping is common. Giving nitrous oxide can worsen ventilation by increasing gas turnover in the obstructed airways, elevating work of breathing and the risk of CO2 retention or respiratory distress. Because of these ventilation concerns, this condition is a contraindication. Well-controlled asthma is not a contraindication, since control of airway reactivity reduces risk; age under five is not an absolute barrier, and the technique requires the child to cooperate and breathe spontaneously through the nose. If the child cannot cooperate to breathe voluntarily, nitrous oxide-oxygen sedation would not be appropriate.

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