What is the purpose of a chest tube after a lobectomy procedure, as understood by the nurse?

Correct Answer: C

Rationale: After a lobectomy, a chest tube is typically inserted to drain fluids and blood that may have accumulated post-operatively. This tube helps to prevent complications, such as infections or pneumonia, and aids in patient recovery. While a chest tube may aid in preventing a mediastinal shift (Choice A), promoting chest expansion of the remaining lung (Choice B), and removing air in the lungs to promote lung expansion (Choice D), these are not the primary reasons for its use after a lobectomy. Therefore, Choices A, B, and D are incorrect.

Correct Answer: A

Rationale: Critical incident stress management is a process that provides individuals with education about recognizing stress reactions and strategizing management techniques for handling stress after a disaster. Choice B, 'Follow-up', is incorrect because it generally refers to continuing care after initial treatment, not specifically to stress management education. Choice C, 'Debriefing', is a process where individuals involved in a critical event are brought together to discuss the event and their reactions to it. It can be part of the critical incident stress management process, but it doesn't cover the whole process. Choice D, 'Defusion', is a technique used in the immediate aftermath of a traumatic event to help individuals process their experiences, but it does not encompass the full range of education about stress recognition and management strategies.

Correct Answer: B

Rationale: The correct answer is B, as it emphasizes the importance of hygiene in food handling, which is crucial to prevent the spread of germs and diseases. The other options do not address the root of the issue, which is the unhygienic handling of food. Option A avoids direct confrontation but does not educate the vendor on proper hygiene. Option C, although it suggests a hygienic method, may not be practical or available in all situations. Option D is an avoidance strategy rather than a way to address the problem.

Correct Answer: A

Rationale: In the context of blood administration, it's crucial for the nurse to stay with the client for the first 15 minutes. This is because most adverse reactions are likely to occur within this initial period. Monitoring the client closely during this time allows for immediate detection and response to any potential reactions. Choice B, staying with the client for the entire period of blood administration, is not typically feasible or necessary, although regular checks should be conducted. Running the infusion at a faster rate during the first 15 minutes (Choice C) is incorrect as this can actually increase the risk of adverse reactions. Informing the client to notify the staff immediately for any adverse reaction (Choice D) is an important practice, but it is not the most direct way for the nurse to monitor for adverse reactions.

Correct Answer: B

Rationale: Hypokalemia, a condition characterized by low levels of potassium in the blood, is reflected in an ECG by a widening QRS Complex and a U wave. This is because potassium plays a key role in the electrical activity of the heart, and its deficiency can lead to abnormalities in the heart's rhythm as represented by these specific changes on the ECG. Choice A is incorrect as tall T waves and pathologic Q waves are more commonly associated with hyperkalemia or myocardial infarction, respectively, rather than hypokalemia. Choices C and D are also incorrect as they do not accurately reflect the ECG changes caused by hypokalemia.