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The nurse is caring for a patient who is mechanically ventilated. The nurse understands that what statement should be considered when determining apapbrirob.pcormia/ttees tn ursing interventions?
- A. Communication with intubated patients is often difficult.
- B. Controlled ventilation is the preferred mode for most p atients.
- C. Patients with chronic obstructive pulmonary disease w ean easily from mechanical ventilation.
- D. Wrist restraints are applied to all patients to avoid self- extubation.
Correct Answer: A
Rationale: The correct answer is A because communication with intubated patients is often challenging due to the presence of an artificial airway, which hinders speech. This understanding is crucial when determining appropriate nursing interventions to ensure effective patient care.
Choice B is incorrect because different patients may require different modes of ventilation based on their specific condition, and controlled ventilation may not always be the preferred mode for all patients.
Choice C is incorrect as patients with chronic obstructive pulmonary disease often have difficulty weaning from mechanical ventilation due to their underlying respiratory condition.
Choice D is incorrect as wrist restraints are not applied to all patients on mechanical ventilation unless absolutely necessary for safety concerns, such as preventing self-extubation.
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The critical care nurse knows that in critically ill patients, renal dysfunction
- A. is a very rare problem.
- B. affects nearly two thirds of patients.
- C. has a low mortality rate once renal replacement therapy has been initiated.
- D. has little effect on morbidity, mortality, or quality of life.
Correct Answer: B
Rationale: The correct answer is B. Renal dysfunction is common in critically ill patients due to various factors like sepsis, hypotension, and nephrotoxic medications. This affects nearly two thirds of patients, making it a significant issue in critical care. Choices A, C, and D are incorrect. A is wrong because renal dysfunction is not rare in critically ill patients. C is incorrect as renal replacement therapy does not guarantee low mortality rates. D is inaccurate as renal dysfunction can have a significant impact on morbidity, mortality, and quality of life in critically ill patients.
The central venous oxygen saturation (ScvO2) is decreasing in a patient who has severe pancreatitis. To determine the possible cause of the decreased ScvO2, the nurse assesses the patient’s:
- A. Lipase.
- B. Temperature.
- C. Urinary output.
- D. Body mass index.
Correct Answer: B
Rationale: The correct answer is B: Temperature. Decreased ScvO2 in severe pancreatitis can be due to systemic inflammatory response leading to increased metabolic demand and decreased tissue oxygen delivery. Monitoring temperature helps assess for presence of infection or sepsis, which can further decrease tissue oxygenation. Lipase (A) is specific for pancreatitis diagnosis, not directly related to ScvO2. Urinary output (C) is important for assessing renal function, not directly related to ScvO2. Body mass index (D) does not provide information on tissue oxygenation status in this context.
The patient is in a progressive care unit following arteriovenous fistula implantation in his left upper arm, and is due to have blood drawn with his next set of vital signs and assessment. When the nurse assesses the patient, the nurse should
- A. draw blood from the left arm.
- B. take blood pressures from the left arm.
- C. start a new intravenous line in the left lower arm.
- D. auscultate the left arm for a bruit and palpate for a thrill.
Correct Answer: D
Rationale: The correct answer is D because after arteriovenous fistula implantation, it is essential to assess for the presence of a bruit (audible sound caused by turbulent blood flow) and thrill (vibratory sensation) in the access site, which indicates proper functioning of the fistula. This assessment ensures that blood is flowing adequately through the newly created access for dialysis or other procedures. Drawing blood or taking blood pressures from the fistula arm can lead to complications such as clot formation or damage to the fistula. Starting a new IV line in the same arm is contraindicated to avoid compromising the newly created fistula. Thus, auscultating for a bruit and palpating for a thrill are the appropriate nursing actions in this scenario.
Nociceptors differ from other nerve receptors in the body in what way?
- A. They adapt very little to continual pain response.
- B. They inhibit the infiltration of neutrophils and eosinophils.
- C. They play no role in the inflammatory response.
- D. They transmit only the thermal stimuli.
Correct Answer: A
Rationale: The correct answer is A because nociceptors are specialized nerve receptors that do not adapt much to continual pain response. This lack of adaptation allows nociceptors to continuously signal the presence of tissue-damaging stimuli, which is crucial for the perception of pain. Choices B, C, and D are incorrect because nociceptors do not inhibit the infiltration of neutrophils and eosinophils (B), they do play a role in the inflammatory response (C), and they transmit various types of stimuli including thermal, mechanical, and chemical, not just thermal stimuli (D).
The nurse obtains the pulse rate of 89 beats/minute for an infant before administering digoxin (Lanoxin). Which action should the nurse take?
- A. Withhold the medication and contact the healthcare provider.
- B. Give the medication dosage as scheduled.
- C. Assess respiratory rate for one minute next.
- D. Wait 30 minutes and give half of the dosage of medication.
Correct Answer: A
Rationale: The correct answer is A. Infants typically have higher resting heart rates than adults, so a pulse rate of 89 beats/minute for an infant may indicate bradycardia. Digoxin can further lower the heart rate, leading to potential adverse effects like arrhythmias. Therefore, withholding the medication and contacting the healthcare provider is crucial to ensure the safety of the infant.
Choice B is incorrect because administering digoxin without addressing the elevated pulse rate can be dangerous. Choice C is incorrect as assessing respiratory rate does not address the immediate concern of the elevated pulse rate. Choice D is also incorrect as waiting and giving half of the dosage may further exacerbate the situation.