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. All of the following are causes of vaginal bleeding in late pregnancy except:

Correct answer: B

Rationale: The correct answer is B: Eclampsia. Eclampsia is a disorder of pregnancy characterized by hypertension, proteinuria, and edema. This condition can cause seizures and/or coma but does not typically present with vaginal bleeding. Choices A, C, and D are abnormal conditions that can cause bleeding, particularly in the third trimester. Placenta previa (choice A) is a condition where the placenta partially or completely covers the cervix, leading to vaginal bleeding. Abruptio placentae (choice C) is the premature separation of the placenta from the uterine wall, causing vaginal bleeding. Uterine rupture (choice D) is a serious obstetrical emergency where the uterus tears during pregnancy or childbirth, resulting in severe bleeding.

3. Following a classic cholecystectomy resection for multiple stones, the PACU nurse observes serosanguinous drainage on the dressing. The most appropriate intervention is to:

Correct answer: C

Rationale: Serosanguinous drainage is expected after a classic cholecystectomy resection. The appropriate intervention is to reinforce the dressing to maintain pressure and promote clot formation. Changing the dressing prematurely increases the risk of infection as it disturbs the wound. Applying an abdominal binder is not indicated as it can interfere with visualizing the dressing and assessing for any signs of bleeding or infection. Notifying the physician is not necessary at this point unless there are signs of excessive bleeding or other concerning symptoms.

4. What is the appropriate intervention for a client who is restrained?

Correct answer: C

Rationale: The correct intervention when a client is restrained is to assess the restraint every 30 minutes. This ensures the safety and well-being of the client by checking for proper fit, circulation, and signs of distress. Removing restraints and providing skin care every hour may not be necessary and could increase the risk of skin breakdown. Documenting the skin condition every 3 hours is important but not the immediate intervention needed when a client is restrained. Tying the restraint to the side rails is unsafe and can cause harm to the client, as restraints should be secured to the bed frame or an immovable part of the bed.

5. What is the purpose of the hydraulic lift (Hoyer lift)?

Correct answer: B

Rationale: The purpose of the hydraulic lift, also known as the Hoyer lift, is to facilitate safe transfers for clients who cannot stand or are extremely obese. It is specifically designed for assisting clients who are unable to stand and for those who are too heavy for healthcare workers to lift safely. Choice A is incorrect because the primary purpose of a hydraulic lift is not related to orthopedic surgery. Choice C is incorrect because it is too broad and does not capture the specific use of the hydraulic lift. Choice D is incorrect because the lift is not solely for clients with special needs but rather for those who cannot stand or are extremely obese.

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