A nurse is caring for a client who had an arterial blood gas drawn. The pH on the ABG is 7.10. What acid-base imbalance does this client have?

Choice A Reason:

“Delivers a low concentration of oxygen” is incorrect because a nasal cannula can deliver varying concentrations of oxygen depending on the flow rate set by the healthcare provider. The concentration can range from low to moderate, typically between 24% to 44%.

Choice B Reason:

“Delivers a constant rate of oxygen” is partially correct but not entirely accurate. While the flow rate can be constant, the key aspect is the specific concentration of oxygen delivered, which is more relevant to the client’s understanding.

Choice C Reason:

“Delivers a high concentration of oxygen” is incorrect because nasal cannulas are generally used for low to moderate oxygen delivery. High concentrations of oxygen are typically delivered through other devices like non-rebreather masks or high-flow nasal cannulas.

Choice D Reason:

“Delivers a constant flow of a specific concentration of oxygen” is correct. This explanation accurately describes how a nasal cannula works. It provides a continuous flow of oxygen at a specific concentration, which is adjusted based on the client’s needs and the healthcare provider’s prescription.

Choice A reason: Administering the medication within 90 minutes of the provider prescribing it aligns with the definition of a “NOW” order. A “NOW” order is intended to be given promptly but not as urgently as a STAT order, which requires immediate administration. This timeframe ensures that the medication is given in a timely manner to address the client’s needs without unnecessary delay.

Choice B reason: Administering the medication at specific times until directed by the provider is not appropriate for a “NOW” order. This approach is more suitable for routine or scheduled medications, where the timing is predetermined and consistent. A “NOW” order requires prompt action rather than adherence to a fixed schedule.

Choice C reason: Administering the medication at every 4-hour intervals is incorrect for a “NOW” order. This frequency is typical for PRN (as needed) medications or those requiring regular dosing intervals. A “NOW” order is a one-time directive that necessitates timely administration soon after the order is given.

Choice D reason: Administering the medication whenever the client reports specific manifestations, such as pain, is characteristic of PRN orders. PRN orders are given based on the client’s symptoms and needs at the time. A “NOW” order, however, is a one-time order that should be carried out promptly, regardless of the client’s immediate symptoms.