A nurse is caring for a client who is receiving oxygen therapy via a nasal cannula. How should the nurse explain to the client how this method of oxygen delivery performs?
Delivers a low concentration of oxygen.
Delivers a constant rate of oxygen.
Delivers a high concentration of oxygen.
Delivers a constant flow of a specific concentration of oxygen.
The Correct Answer is D
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason:
Sleep deprivation is incorrect. While sleep deprivation can cause confusion and disorientation, it is less likely to cause abrupt onset of altered mental status and hallucinations. Sleep deprivation typically results in gradual cognitive decline and fatigue rather than sudden changes.
Choice B Reason:
Normal signs of aging is incorrect. Normal aging can involve some cognitive decline, but it does not typically cause sudden and severe symptoms like hallucinations and significant disorientation. These symptoms are more indicative of an acute condition.
Choice C Reason:
Dementia is incorrect. Dementia involves a gradual decline in cognitive function over time and does not typically present with sudden onset of symptoms. While dementia can include hallucinations and disorientation, these symptoms usually develop progressively.
Choice D Reason:
Delirium is correct. Delirium is characterized by a sudden onset of confusion, disorientation, and changes in mental status. It is often triggered by acute medical conditions such as infections, including UTIs. Elderly patients are particularly susceptible to delirium, which can include symptoms like hallucinations and severe confusion.
Correct Answer is A
Explanation
Effective hand hygiene is crucial in preventing the spread of infections in healthcare settings. The Centers for Disease Control and Prevention (CDC) and other health organizations provide guidelines on proper hand hygiene techniques to ensure maximum effectiveness.
Choice A Reason:
“Rub soap on hands for 20 seconds.”
This is the correct action for effective hand hygiene. According to the CDC, scrubbing your hands for at least 20 seconds is essential to remove germs effectively. This duration ensures that all surfaces of the hands, including the backs, between the fingers, and under the nails, are thoroughly cleaned. The CDC recommends singing the “Happy Birthday” song twice as a timer to ensure you scrub for the full 20 seconds.
Choice B Reason:
“Allow hands and arms to dry.”
While drying hands is an important step in hand hygiene, it is not the primary action that makes hand hygiene effective. The focus should be on the thorough scrubbing and cleaning of the hands. After washing, hands should be dried using a clean towel or air dryer to prevent the transfer of germs from wet hands.
Choice C Reason:
“Hold the hands higher than the elbows.”
This technique is often used in surgical hand antisepsis to prevent water from running from the hands down to the elbows, potentially contaminating the hands again. However, for routine hand hygiene, this is not necessary. The primary focus should be on the thorough washing and scrubbing of the hands.
Choice D Reason:
“Adjust the water temperature to feel hot.”
The temperature of the water is less important than the act of scrubbing itself. The CDC states that hands can be washed with either warm or cold water. The key is to use soap and scrub all surfaces of the hands for at least 20 seconds. Hot water can actually be harsh on the skin and is not required for effective hand hygiene.
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