when a client needs oxygen therapy what is the highest flow rate that oxygen can be delivered via nasal cannula
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1. When a client needs oxygen therapy, what is the highest flow rate that oxygen can be delivered via nasal cannula?

Correct answer: C

Rationale: The correct answer is 6 liters/minute. When a client requires oxygen therapy, the maximum flow rate that oxygen can be delivered via nasal cannula is 6 liters/minute. Nasal cannula can effectively deliver oxygen up to 6 liters/minute. Flow rates exceeding 6 liters/minute may lead to drying of the nasal passages and discomfort for the client. Higher flow rates, like 8 liters/minute, should be administered using a mask to ensure sufficient oxygenation. Options A, B, and D are incorrect as they indicate flow rates that surpass the recommended maximum for nasal cannula delivery.

2. Following a recent tattoo, someone should be screened for:

Correct answer: C

Rationale: Following a recent tattoo, someone should be screened for hepatitis. Tattooing puts a client at risk for blood-borne hepatitis B or C if strict sterile procedures are not followed. Tuberculosis is an airborne pathogen, while herpes and syphilis are spread through direct contact like sexual activity. Therefore, hepatitis is the most relevant infection to screen for after getting a tattoo.

3. The nurse is teaching a client about communicable diseases and explains that a portal of entry is:

Correct answer: D

Rationale: The correct answer is 'the respiratory system.' A portal of entry is the path through which a microorganism enters the body. In the case of communicable diseases, the respiratory system can serve as a portal of entry for pathogens such as viruses or bacteria. Choices A, B, and C are incorrect. A 'vector' is an organism that transmits disease, not the entry point for pathogens. Contaminated water or food can act as sources or reservoirs of disease-causing microorganisms, not portals of entry.

4. The nurse notes that a healthcare provider has documented the following prescription in a client's record: Furosemide (Lasix) 40 mg stat once. What action should the nurse take?

Correct answer: D

Rationale: The correct action for the nurse to take in this situation is to contact the healthcare provider. The prescription provided lacks crucial information such as the route of administration. Before administering any medication, the nurse must clarify any missing details with the provider, especially for a stat prescription that requires immediate administration. Drawing up or administering the medication without verifying the route of administration is unsafe and can lead to errors. Planning for the next shift nurse to administer the medication is not appropriate in this scenario as the stat order necessitates immediate action. Therefore, the best course of action is to contact the healthcare provider to obtain clarification on the prescription.

5. Several passengers aboard an airliner suddenly become weak and suffer breathing difficulty. The diagnosis is likely to be

Correct answer: B

Rationale: In the scenario described, where multiple passengers on an airliner experience sudden weakness and breathing difficulty simultaneously, the most likely cause is chemical exposure. This is because a sudden onset of similar symptoms in a group of individuals suggests a common environmental factor affecting them. Options A, C, and D are less likely as they do not explain a sudden onset of symptoms in multiple individuals simultaneously. Asian flu (Option A) is a viral infection and would not typically result in sudden symptoms in multiple individuals at the same time. Bacterial pneumonia (Option C) is a localized infection and not a probable cause for a sudden onset of symptoms in a group. An allergic reaction (Option D) would usually occur in individuals with specific allergies rather than affecting a group of passengers at the same time.

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