Final answer:
The nurse would be most concerned about rapid shallow respirations with intermittent wheezes in a client with asthma who is receiving oxygen per nasal cannula at 2 liters per minute.
Step-by-step explanation:
The nurse would be most concerned about the unreported finding of rapid shallow respirations with intermittent wheezes in a client with asthma who is receiving oxygen per nasal cannula at 2 liters per minute. Rapid shallow respirations and wheezing indicate that the client's asthma is not well controlled and may be worsening. This could be a sign of worsening airway obstruction and inadequate oxygenation.