Nokea
Which arterial blood gas (ABG) data corresponds with a patient's clinical manifestations of respiratory alkalosis?
- A. pH = 7.46, PaCO2 = 44 mm Hg, PaO2 = 95 mm Hg, and HCO3 = 36 mEq/L.
- B. pH = 7.27, PaCO2 = 70 mm Hg, PaO2 = 80 mm Hg, and HCO3 = 26 mEq/L.
- C. pH = 7.30, PaCO2 = 35 mm Hg, PaO2 = 70 mm Hg, and HCO3 = 20 mEq/L.
- D. pH = 7.52, PaCO2 = 24 mm Hg, PaO2 = 85 mm Hg, and HCO3 = 24 mEq/L.
Correct Answer: D
Rationale: Respiratory alkalosis is indicated by a high pH (7.52) and low PaCO2 (24 mm Hg), as seen in option D, with normal HCO3 indicating no metabolic compensation.
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Which role is attributed to the base in the acid-base balance?
- A. Does not interact with acids.
- B. Promotes the excretion of acid.
- C. Activates the system of acid-base balance.
- D. Increases the action of the hydrogen ions.
Correct Answer: B
Rationale: Bases, like bicarbonate, promote acid excretion by neutralizing hydrogen ions, aiding in maintaining acid-base balance.
Which goal is a primary objective for a patient who has chronic heart failure (HF)?
- A. Maximizing cardiac output.
- B. Maintaining ideal body weight.
- C. Performing daily aerobic exercises.
- D. Maintaining a steady pulse oximetry reading.
Correct Answer: A
Rationale: Maximizing cardiac output is a primary goal for patients with chronic heart failure (HF) because it helps improve tissue perfusion and oxygen delivery to meet the body's demands. It is a crucial aspect of managing heart failure and preventing further complications.
The nurse notes that there is a difference in a patient's blood pressure (BP) and heart rate (HR) when the patient changes position from supine to standing. The differences are a decrease of 20 mm Hg in systolic BP, a decrease of 10 mm Hg in diastolic BP, and an increase in the HR of 20 beats/minute. Which interpretation would the nurse make about the patient's condition?
- A. Hypertensive crisis.
- B. An auscultatory gap.
- C. Resistant hypertension.
- D. Enlarged lymph nodes.
Correct Answer: B
Rationale: The described changes suggest an auscultatory gap, a phenomenon during BP measurement that can lead to inaccurate readings, requiring careful technique.
A patient's blood pressure (BP) reading is 142/91 mm Hg. How would the nurse classify the BP?
- A. Normal.
- B. Prehypertension.
- C. Hypertension, stage 1.
- D. Hypertension, stage 2.
Correct Answer: C
Rationale: A BP of 142/91 mm Hg is classified as stage 1 hypertension, with systolic 140-159 mm Hg or diastolic 90-99 mm Hg.
Which strategy is most important for a nurse to include when planning care for a patient who has neutropenia?
- A. Restricting all visitors.
- B. Placing the patient in a private room.
- C. Advising the patient to use only an electric shaver.
- D. Wearing a gown and gloves when in direct contact with the patient.
Correct Answer: B
Rationale: Placing the patient in a private room is crucial for a neutropenic patient to minimize exposure to pathogens, reducing infection risk due to their compromised immune system.