) Administer oxygen via non-rebreather mask at 10 L/min

c) Administer oxygen via venturi mask at 24% FiO2

d) *Administer oxygen via nasal cannula at 1 L/min*

Rationale: The goal of oxygen therapy for patients with COPD is to maintain an oxygen saturation of

88-92%, as higher levels may suppress their respiratory drive and cause carbon dioxide

retention. Therefore, the nurse should start with the lowest possible flow rate of oxygen and

titrate up as needed. A nasal cannula at 1 L/min delivers about 24% FiO2, which is appropriate

for this patient. A non-rebreather mask delivers 100% FiO2, which is too high and may cause

oxygen toxicity. A venturi mask delivers a precise concentration of oxygen, but it is not necessary

for this patient.

2. A nurse is conducting a home visit for a patient with heart failure who has been recently

discharged from the hospital. The nurse assesses the patient's weight, blood pressure, pulse, and

edema. The nurse also asks the patient about their medication adherence, dietary intake, fluid

restriction, and activity level. What is the primary purpose of these assessments?

a) To evaluate the patient's functional status and quality of life

b) To monitor the patient's response to treatment and identify potential complications

c) *To educate the patient on self-care strategies and reinforce discharge instructions*

d) To provide emotional support and counseling to the patient and family

Rationale: The primary purpose of home visits for patients with heart failure is to educate them on

self-care strategies and reinforce discharge instructions, as these are essential for preventing

readmissions and improving outcomes. The assessments that the nurse performs are also

important for evaluating the patient's condition and providing feedback, but they are not the

main goal of the visit.

3. A nurse is planning care for a patient with diabetes mellitus who has a foot ulcer. The nurse

collaborates with a wound care specialist, a dietitian, a podiatrist, and a diabetes educator. What

type of care delivery model is the nurse using?

a) Primary nursing

b) Team nursing

c) *Case management*

d) Functional nursing

Rationale: Case management is a care delivery model that involves coordinating care across

multiple disciplines and settings to achieve optimal outcomes for patients with complex needs.

The case manager acts as a liaison between the patient, family, health care providers, and