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. What condition is mammography used to detect?

Correct answer: B

Rationale: Mammography is specifically used to detect tumors or abnormal growths, especially in breast tissue. It is not a tool for identifying pain, edema, or epilepsy. Therefore, the correct answer is 'tumor.' Pain is a symptom, edema is swelling, and epilepsy is a neurological disorder; none of these are conditions typically detected through mammography.

3. Regardless of their practice area, nurses should be concerned with:

Correct answer: C

Rationale: All nurses should be concerned with preventing the transmission of microorganisms to themselves and others. A primary way to achieve this is through asepsis. Nursing practice emphasizes providing a safe environment to shield clients, family, and healthcare providers from infections. Choices A, B, and D are incorrect. While drug-resistant bacteria, critical microorganisms, and overprescription of bacteriostatic drugs are important, nurses' primary focus should be on preventing microorganism transmission to ensure safety and well-being.

4. Which action exemplifies the use of evidence-based practice in the delivery of client care?

Correct answer: C

Rationale: Evidence-based practice is an approach to client care where the nurse integrates the client’s preferences, clinical expertise, and the best research evidence to deliver quality care. Donning sterile gloves to change an abdominal wound dressing exemplifies evidence-based practice as it prevents the entrance of harmful bacteria into the wound, following best practice guidelines. The other options do not align with evidence-based practice. Advising a client to agree to a treatment does not involve integrating research evidence. Taking herbal substances may not be supported by strong research evidence and can pose risks. Additionally, rectal temperature-taking in a client with bleeding precautions can increase the risk of injury to the rectal mucosa, not aligning with best practices in care delivery.

5. What is mammography used to detect?

Correct answer: B

Rationale: Mammography is a diagnostic imaging technique specifically designed to detect tumors, cysts, or other abnormalities in breast tissue. It is not used to detect pain, edema, or epilepsy. Pain is a symptom, not a condition that mammography can detect. Edema refers to swelling and is not detectable through mammography. Epilepsy is a neurological disorder, not a condition detected by mammography.

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