An adult patient visits the clinic expressing concern about a lump that appeared on their neck about a week ago.

Upon examination, the nurse finds a large, non-tender, hardened left subclavian lymph node without any overlying tissue inflammation.

What could these findings indicate?

Choice A rationale
While any positive response on the CAGE questionnaire could be a cause for concern and warrant further investigation, one positive response does not definitively indicate that the patient should seek help with alcohol addiction. The CAGE questionnaire is a screening tool used to identify potential problems with alcohol, but it is not diagnostic. A healthcare provider would need to conduct a more thorough assessment to diagnose alcohol addiction.
Choice B rationale
It is not necessary for all responses to the CAGE questionnaire to be positive in order to suggest alcohol dependence. The CAGE questionnaire is a screening tool, and while a greater number of positive responses increases the likelihood of alcohol dependence, it is not a requirement for all responses to be positive. A score of two or more is considered clinically significant.

Choice C rationale
The CAGE questionnaire is indeed a tool used to identify potential problems with alcohol, but it is not used to identify general substance abuse. The CAGE questionnaire specifically asks about feelings related to alcohol use. There are other screening tools available that are designed to identify issues with other substances.
Choice D rationale
This is the correct answer. The CAGE questionnaire is a validated screening tool that is widely used in clinical settings to detect alcoholism. It is considered positive, and suggestive of alcohol dependence, if two or more questions are answered affirmatively.

Choice A rationale
Oxygen therapy is a crucial part of the management for patients with severe pneumonia. However, prolonged administration of high concentrations of oxygen can potentially lead to oxygen toxicity, resulting in damage to the cells of the lungs. This is due to the production of

reactive oxygen species which can damage cell structures. Therefore, it is important to avoid administering oxygen at high levels for extended periods.
Choice B rationale
While it might seem logical to increase the oxygen rate during sleep due to a slower respiratory rate, this is not typically recommended. The body’s oxygen requirements do not significantly change during sleep and increasing the oxygen rate could potentially lead to hyperoxia.
Choice C rationale
Sedatives can indeed slow the respiratory rate, but this does not decrease oxygen needs. In fact, it could potentially lead to respiratory depression and hypoxia, especially in a patient with a respiratory illness like pneumonia.
Choice D rationale
Humidification of oxygen can improve patient comfort, especially with high flow rates, by preventing dryness in the nasal passages. However, it does not make oxygen less toxic.