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Which of the following devices is best suited to deliver 65 % oxygen to a patient who is spontaneously breathing?
- A. Face mask with non-rebreathing reservoir
- B. Low-flow nasal cannula
- C. Simple face mask
- D. Venturi mask
Correct Answer: D
Rationale: The Venturi mask is the best choice for delivering 65% oxygen because it allows precise oxygen concentration delivery through adjustable venturi valves. This device ensures consistent oxygen levels even during variations in patient breathing patterns. Face mask with non-rebreathing reservoir (A) delivers higher oxygen concentrations, low-flow nasal cannula (B) is not suitable for precise oxygen delivery, and simple face mask (C) may not provide the desired oxygen concentration.
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What is the most important nursing intervention for patien ts who receive neuromuscular blocking agents?
- A. Administer sedatives in conjunction with the neuromu as bc iu rbl .a cor m b /tl eo sc t king agents.
- B. Assess neurological status every 30 minutes.
- C. Avoid interaction with the patient, because he or she won’t be able to hear.
- D. Restrain the patient to avoid self-extubation.
Correct Answer: B
Rationale: The correct answer is B: Assess neurological status every 30 minutes. This intervention is crucial for patients receiving neuromuscular blocking agents to monitor for any adverse effects such as respiratory depression or paralysis. Regular assessments help ensure early detection of complications and prompt intervention.
A: Administering sedatives in conjunction with neuromuscular blocking agents can potentiate respiratory depression and lead to respiratory compromise.
C: Avoiding interaction with the patient is not appropriate as communication and patient interaction are important aspects of nursing care.
D: Restraint should be avoided as it can increase the risk of complications such as pressure ulcers, anxiety, and decreased respiratory function.
Overall, regular neurological assessments are essential for ensuring patient safety and prompt intervention in case of any complications.
A 53-year-old, 80-kg patient is admitted to the cardiac sur gical intensive care unit after cardiac surgery with the following arterial blood gas (ABG ) levels. What is the nurse’s interpretation of these values? pH 7.4 PaCO 40 mm Hg Bicarbonate 24 mEq/L PaO 95 mm Hg O saturation 97% Respirations 20 breaths per minute
- A. Compensated metabolic acidosis
- B. Metabolic alkalosis
- C. Normal ABG values
- D. Respiratory acidosis
Correct Answer: C
Rationale: The correct interpretation is C: Normal ABG values.
1. pH is within the normal range of 7.35-7.45.
2. PaCO2 is 40 mm Hg, within the normal range of 35-45 mm Hg.
3. Bicarbonate is 24 mEq/L, within the normal range of 22-26 mEq/L.
4. PaO2 is 95 mm Hg, within the normal range of 80-100 mm Hg.
5. Oxygen saturation is 97%, which is normal.
6. Respirations are also within the normal range at 20 breaths per minute.
Overall, all values fall within the normal range, indicating a well-maintained acid-base balance. Other choices are incorrect because there are no abnormalities that would suggest compensated metabolic acidosis, metabolic alkalosis, or respiratory acidosis based on the given ABG values.
Which action is a priority for the nurse to take when the low-pressure alarm sounds for a patient who has an arterial line in the left radial artery?
- A. Fast flush of the arterial line.
- B. Check the left hand for pallor.
- C. Assess for cardiac dysrhythmias.
- D. Rezero the monitoring equipment.
Correct Answer: C
Rationale: Rationale for Correct Answer (C): When the low-pressure alarm sounds for a patient with an arterial line, the nurse should assess for cardiac dysrhythmias first. This is because a sudden drop in pressure could indicate a serious issue affecting the heart's ability to pump effectively. Identifying and addressing any cardiac dysrhythmias promptly is crucial for patient safety.
Summary of Incorrect Choices:
A: Fast flush of the arterial line - This would not address the underlying cause of the low-pressure alarm and may not be necessary.
B: Check the left hand for pallor - While assessing perfusion is important, it is not the priority when the alarm indicates a potential cardiac issue.
D: Rezero the monitoring equipment - While important for accuracy, it is not the priority when the alarm indicates a potential cardiac concern.
The removal of plasma water and some low–molecular weight particles by using a pressure or osmotic gradient is known as
- A. dialysis.
- B. diffusion.
- C. clearance.
- D. ultrafiltration.
Correct Answer: D
Rationale: Ultrafiltration is the correct answer because it involves the removal of plasma water and low-molecular weight particles by using a pressure or osmotic gradient. During ultrafiltration, the pressure gradient pushes the fluid through a semipermeable membrane, separating the substances based on their molecular size. This process allows for the selective removal of unwanted substances while retaining essential components. Dialysis (choice A) involves the removal of waste products from the blood, but it does not specifically target plasma water and low-molecular weight particles. Diffusion (choice B) is the passive movement of particles from an area of higher concentration to an area of lower concentration and is not specific to the removal of plasma water. Clearance (choice C) refers to the rate at which a substance is removed from the blood and does not involve the mechanism of pressure or osmotic gradient utilized in ultrafiltration.
The nurse is caring for a critically ill patient who can speak. The nurse notices that the patient is demonstrating behaviors indicative of anxiety but is silent. What nursing strategy would give the nurse the most information about the patients feelings?
- A. Explain procedures to the patient and family.
- B. Ask the patient to share his or her internal dialogue.
- C. Encourage the patient to nap before visiting hours.
- D. Ensure that the patient has adequate pain control.
Correct Answer: B
Rationale: The correct answer is B because asking the patient to share his or her internal dialogue can provide direct insight into the patient's thoughts and feelings, allowing the nurse to address specific anxieties. This approach promotes open communication and understanding. Choice A focuses on providing information but may not directly address the patient's feelings. Choice C is unrelated to addressing the patient's anxiety. Choice D addresses pain control, which is important but not directly related to exploring the patient's emotions. Therefore, option B is the most effective strategy for gaining insight into the patient's feelings in this scenario.