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A PaCO 2 of 48 mm Hg is associated with what outcome?
- A. Hyperventilation
- B. Hypoventilation
- C. Increased absorption of O
- D. Increased excretion of HCO
Correct Answer: B
Rationale: The correct answer is B: Hypoventilation. A PaCO2 of 48 mm Hg indicates an elevated level of carbon dioxide in the blood, which is typically seen in hypoventilation where the lungs are not effectively removing CO2. Hypoventilation leads to respiratory acidosis. Option A is incorrect because hyperventilation would decrease PaCO2 levels. Option C is incorrect as it does not directly relate to PaCO2 levels. Option D is incorrect as increased excretion of HCO3- would not directly affect PaCO2 levels.
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The nurse is discharging a patient home following treatment for community-acquired pneumonia. As part of the discharge teaching, the nurse sh ould provide instruction?
- A. “If you get the pneumococcal vaccine, you’ll never get pneumonia again.”
- B. “It is important for you to get an annual influenza shot to reduce your risk of pneumonia.”
- C. “Stay away from cold, drafty places because that incre ases your risk of pneumonia when you get home.”
- D. “Since you have been treated for pneumonia, you now have immunity from getting it in the future.”
Correct Answer: B
Rationale: Step 1: Influenza can lead to pneumonia as a complication, so getting an annual flu shot can reduce the risk of pneumonia.
Step 2: Providing education on the importance of prevention aligns with discharge teaching goals.
Step 3: Option A is incorrect as the pneumococcal vaccine doesn't guarantee immunity from all causes of pneumonia.
Step 4: Option C is incorrect as cold or drafty places do not directly cause pneumonia.
Step 5: Option D is incorrect as having pneumonia once does not confer permanent immunity.
Which hemodynamic parameter is most appropriate for the nurse to monitor to determine the effectiveness of medications given to a patient to reduce left ventricular afterload?
- A. Mean arterial pressure (MAP)
- B. Systemic vascular resistance (SVR)
- C. Pulmonary vascular resistance (PVR)
- D. Pulmonary artery wedge pressure (PAWP)
Correct Answer: B
Rationale: The correct answer is B: Systemic vascular resistance (SVR). SVR reflects the resistance the heart must overcome to pump blood into the systemic circulation. By monitoring SVR, the nurse can assess the effectiveness of medications aimed at reducing left ventricular afterload, as these medications work by dilating blood vessels and reducing resistance. An effective reduction in afterload would lead to a decrease in SVR.
A: Mean arterial pressure (MAP) is an indicator of perfusion pressure but may not directly reflect changes in afterload.
C: Pulmonary vascular resistance (PVR) is specific to the pulmonary circulation and not directly related to left ventricular afterload.
D: Pulmonary artery wedge pressure (PAWP) is a measure of left ventricular preload and filling pressures, not afterload.
The nurse is caring for a patient who has undergone major abdominal surgery. The nurse notices that the patient’s urine output has been less than 20 mL/hour for the past 2 hours. The patient’s blood pressure is 100/60 mm Hg, and the pulse is 110 beats/min. Previously, the pulse was 90 beats/min with a blood pressure of 120/80 mm Hg. The nurse should
- A. contact the provider and expect a prescription for a normal saline bolus.
- B. wait until the provider makes rounds to report the assessment findings.
- C. continue to evaluate urine output for 2 more hours.
- D. ignore the urine output, as this is most likely postrenal in origin.
Correct Answer: A
Rationale: The correct answer is A: contact the provider and expect a prescription for a normal saline bolus. The patient is showing signs of hypovolemia with decreased urine output, low blood pressure, and elevated heart rate. This indicates inadequate perfusion and potential hypovolemic shock. Administering a normal saline bolus will help restore intravascular volume and improve perfusion. Waiting for the provider to make rounds (option B) could delay necessary intervention. Continuing to evaluate urine output for 2 more hours (option C) is not appropriate given the patient's current condition. Ignoring the urine output (option D) is dangerous as it could lead to further complications.
The nurse is caring for a patient who is orally intubated and on a mechanical ventilator. The nurse believes that the patient is experiencing excess anxiety. For this patient, what behavior best indicates anxiety?
- A. Restlessness
- B. Verbalization
- C. Increased respiratory rate
- D. Glasgow Coma Scale score of 3
Correct Answer: A
Rationale: The correct answer is A: Restlessness. Restlessness is a common behavioral indicator of anxiety in patients. In this scenario, a patient who is orally intubated and on a ventilator may not be able to verbally express anxiety, making restlessness a more prominent sign. Verbalization may not be possible due to intubation. While increased respiratory rate can be a symptom of anxiety, it is also a common physiological response in patients on mechanical ventilation. A Glasgow Coma Scale score of 3 indicates severe impairment of consciousness, not specifically anxiety.
Upon entering the room of a patient with a right radial arte rial line, the nurse assesses the waveform to be slightly dampened and notices blood to bea bbirabc.ckoemd/te ustp into the pressure tubing. What is the best action by the nurse?
- A. Check the inflation volume of the flush system pressur e bag.
- B. Disconnect the flush system from the arterial line catheter.
- C. Zero reference the transducer system at the phlebostati c axis. WWWWWW ..TTHHEENNUURRSSIINNGGMMAASSTTEERRYY..CCOOMM
- D. Reduce the number of stopcocks in the flush system tubing.
Correct Answer: B
Rationale: The correct answer is B: Disconnect the flush system from the arterial line catheter. This action is necessary to prevent air from entering the patient's bloodstream, which can lead to air embolism. By disconnecting the flush system, the nurse stops the flow of air and ensures patient safety. Checking the inflation volume of the pressurized bag (A) is not the immediate concern in this situation. Zero referencing the transducer system (C) is unrelated to the issue of air entering the arterial line. Reducing the number of stopcocks in the flush system tubing (D) does not address the immediate risk of air embolism.