Question

The nurse is caring for a mechanically ventilated patient with a pulmonary artery catheter who is receiving continuous enteral tube feedings. When obtaining continuous hermodynamic monitoring measurements, what is the best nursing action?

Answer 1

Correct Answers:

Level and zero reference the air-fluid interface of the transducer with the patient's head of bed elevated to 30 degrees and record hemodynamic values.

Rationale :

⏭️ The patient is receiving continuous enteral tube feedings, so maintaining the head of the bed elevated helps reduce the risk of aspiration.

⏭️ Hemodynamic pressure measurements can be obtained with the head of the bed elevated when the transducer is correctly leveled to the phlebostatic axis.

⏭️ The phlebostatic axis approximates the level of the right atrium and serves as the reference point for invasive pressure monitoring.

⏭️ The nurse should level the air-fluid interface of the transducer at this reference point and zero the monitoring system according to facility protocol.

⏭️ Maintaining a consistent patient position is important because changes in position can alter measured central vascular pressures.

⏭️ Elevating the head of the bed to approximately 30 degrees also supports respiratory function in a mechanically ventilated patient.

⏭️ There is no need to place the patient completely flat merely to obtain hemodynamic measurements when proper leveling and zeroing are performed.

⏭️ This approach maintains both measurement accuracy and aspiration precautions, making it the best nursing action.

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Answer 2

Correct Answers:

Hypotension
Dysrhythmias
Clotting or bleeding

Rationale :

Hypotension

⏩ Hypotension is a potential complication of both continuous renal replacement therapy and conventional hemodialysis.

⏩ Removal of intravascular fluid can reduce circulating volume and venous return, leading to a decrease in blood pressure.

⏩ Rapid fluid removal during conventional dialysis can cause more abrupt hemodynamic changes than the slower removal used with CRRT.

⏩ Critically ill clients receiving CRRT may already have limited cardiovascular reserve and can still develop hypotension during therapy.

⏩ Excessive ultrafiltration can worsen tissue hypoperfusion and compromise organ function.

⏩ The nurse should monitor blood pressure, heart rate, fluid balance, and signs of decreased perfusion closely.

⏩ Prescribed fluid removal rates may need adjustment when hypotension develops.

⏩ Hypotension is therefore a well-recognized complication of renal replacement therapies.

Dysrhythmias

⏩ Dysrhythmias may occur during CRRT or conventional dialysis because treatment can alter electrolyte concentrations.

⏩ Changes in potassium, calcium, and magnesium can affect myocardial electrical activity.

⏩ Rapid changes in serum potassium are particularly concerning because both hyperkalemia and hypokalemia can trigger dangerous cardiac rhythms.

⏩ Acid-base changes during dialysis can also influence cardiac excitability and conduction.

⏩ Clients with underlying cardiovascular disease are particularly vulnerable to rhythm disturbances during renal replacement therapy.

⏩ Continuous cardiac monitoring may be indicated for critically ill patients undergoing CRRT.

⏩ Abnormal rhythms require assessment of electrolytes, hemodynamic stability, and the dialysis treatment parameters.

⏩ Dysrhythmias are therefore a potential complication of both continuous and intermittent dialysis therapies.

Clotting or bleeding

⏩ Both clotting and bleeding can complicate renal replacement therapy because blood circulates through an extracorporeal circuit.

⏩ Blood contact with the dialysis circuit can promote clot formation, which may obstruct the filter or tubing.

⏩ Anticoagulants may be used to maintain circuit patency, particularly during CRRT.

⏩ Anticoagulation increases the patient's risk for bleeding, especially when coagulation abnormalities are already present.

⏩ Critically ill patients may be particularly vulnerable because of invasive devices, surgery, trauma, or underlying coagulopathy.

⏩ The nurse should inspect the circuit for clotting and assess the patient for bruising, bleeding, or decreasing hemoglobin.

⏩ Anticoagulation therapy and coagulation laboratory values should be monitored according to the prescribed protocol.

⏩ Clotting and bleeding are therefore important potential complications of CRRT and conventional dialysis.

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Answer 3

Correct Answers:

Take the time to listen, assess the patient's and family's support systems, coping mechanisms, and potential for developing PTSD. Provide information on integrative support programs.

Rationale :

🔼 The wife is expressing significant emotional distress related to her husband's burn injuries and disfigurement, so therapeutic listening is an appropriate immediate response.

🔼 Major burns can produce profound psychological effects involving body image, grief, anxiety, depression, and post-traumatic stress.

🔼 Family members can also experience distress as they adjust to changes in the patient's appearance, function, and long-term recovery needs.

🔼 Assessing existing support systems and coping mechanisms helps determine the family's strengths and areas requiring additional assistance.

🔼 The nurse should allow the wife to express fears and concerns without minimizing or prematurely redirecting her emotions.

🔼 Providing information about burn support groups, rehabilitation resources, counseling, and peer-support programs can promote longer-term adaptation.

🔼 Screening for signs of post-traumatic stress disorder is appropriate because severe burns and critical illness can be traumatic for both patients and families.

🔼 Combining therapeutic communication, assessment, and multidisciplinary support provides the most comprehensive response to the wife's concerns.

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Answer 4

Correct Answers:

90

Rationale :

Given:

⏩ ICP: 18 mmHg

⏩ MAP: 108 mmHg

Formula:

⏩ CPP = MAP − ICP

Calculation:

⏩ 108 mmHg − 18 mmHg

= 90 mmHg

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Answer 5

Correct Answers:

Coughing or attempting to talk

Rationale :

➡️ A high inspiratory pressure alarm indicates that the ventilator is encountering increased resistance while attempting to deliver the prescribed breath.

➡️ Coughing increases airway resistance and can temporarily raise the inspiratory pressure required to ventilate the patient.

➡️ Attempts to talk or breathe asynchronously with the ventilator can cause patient-ventilator dyssynchrony and trigger a high-pressure alarm.

➡️ Other common causes include secretions, kinked tubing, biting the endotracheal tube, bronchospasm, and decreased lung compliance.

➡️ The nurse should immediately assess the patient before assuming that the ventilator itself is malfunctioning.

➡️ Assessment should include respiratory effort, breath sounds, airway patency, tubing position, oxygen saturation, and evidence of secretions.

➡️ Suctioning may be required when retained secretions are causing increased airway resistance.

➡️ Coughing or attempting to talk therefore best reflects a potential cause of a high inspiratory pressure alarm.

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Answer 6

Correct Answers:

Notify the physician immediately and anticipate taking the patient for a stat head CT scan.

Rationale :

🩶 The sudden development of recurrent right-arm weakness, decreased responsiveness, and slurred speech represents acute neurologic deterioration after thrombolytic therapy.

🩶 A major complication following tPA (alteplase) administration is intracranial hemorrhage, which can cause abrupt neurologic decline.

🩶 The patient's initial neurologic improvement followed by sudden worsening is particularly concerning for intracranial bleeding or other acute neurologic complication.

🩶 The nurse should immediately notify the provider or activate the appropriate emergency stroke response because rapid evaluation is essential.

🩶 A stat noncontrast head CT is typically required to determine whether intracranial hemorrhage has occurred.

🩶 Additional assessment, including vital signs and neurologic findings, should occur promptly, but it must not delay escalation of care for this significant neurologic change.

🩶 Early recognition and treatment of intracranial hemorrhage are essential because continued bleeding can rapidly increase intracranial pressure and neurologic injury.

🩶 Immediate provider notification with anticipation of emergency neuroimaging is therefore the priority response.

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Answer 7

Correct Answers:

11.4

Rationale :

Given:

💠 Order: Dobutamine 4 mcg/kg/min

💠 Weight: 95 kg

💠 Available: 500 mg in 250 mL

Dose per minute:

💠 4 mcg × 95 kg = 380 mcg/min

Convert to mg:

💠 380 mcg ÷ 1000 = 0.38 mg/min

Dose per hour:

💠 0.38 mg/min × 60 min/hr = 22.8 mg/hr

Concentration:

💠 500 mg ÷ 250 mL = 2 mg/mL

Formula:

💠 mL/hr = Dose required per hour ÷ Concentration

Calculation:

💠 22.8 mg/hr ÷ 2 mg/mL

= 11.4 mL/hr

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Answer 8

Correct Answers:

Dobutamine

Rationale :

🤍 Dobutamine is primarily a beta₁-adrenergic agonist that increases the force of myocardial contraction.

🤍 Stimulation of cardiac beta₁ receptors increases intracellular cyclic AMP and enhances calcium availability within cardiac muscle cells.

🤍 Increased calcium availability produces a positive inotropic effect, meaning stronger myocardial contractions.

🤍 Increased contractility raises stroke volume and cardiac output, making dobutamine useful in selected patients with severe cardiac dysfunction or low-output states.

🤍 Dobutamine generally has less direct effect on systemic vascular resistance than potent vasopressors, although its hemodynamic effects can vary with dose and patient condition.

🤍 The nurse should monitor heart rate, blood pressure, cardiac rhythm, urine output, and hemodynamic response during continuous infusion.

🤍 Excessive beta₁ stimulation can produce tachycardia, dysrhythmias, and increased myocardial oxygen demand.

🤍 Dobutamine therefore directly increases cardiac contractility through its predominant beta₁-adrenergic activity.

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Answer 9

Correct Answers:

Low systemic vascular resistance and high cardiac output

Rationale :

💕 During the early or hyperdynamic phase of septic shock, inflammatory mediators produce widespread peripheral vasodilation.

💕 Vasodilation causes a significant reduction in systemic vascular resistance (SVR), contributing to impaired vascular tone and hypotension.

💕 Compensatory sympathetic stimulation commonly produces tachycardia and increased cardiac output during early septic shock.

💕 The patient's flushed appearance and bounding peripheral pulses are characteristic findings associated with peripheral vasodilation and increased blood flow.

💕 This phase is often called warm shock because the skin may initially be warm and flushed rather than cool and clammy.

💕 Cardiac output may remain elevated even though tissue perfusion is impaired because abnormal vasodilation and maldistribution of blood flow reduce effective oxygen delivery.

💕 As septic shock progresses, myocardial depression and worsening circulatory failure can eventually cause cardiac output to decline.

💕 Low SVR with high cardiac output therefore best matches the patient's early hyperdynamic septic-shock presentation.

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Answer 10

Correct Answers:

Increase set tidal volume
Increase ventilator rate

Rationale :

Increase set tidal volume

💟 The ABG demonstrates respiratory acidosis because the pH is decreased while PaCO₂ is elevated.

💟 The normal bicarbonate level indicates little or no metabolic compensation, supporting an acute respiratory problem.

💟 Elevated PaCO₂ indicates inadequate alveolar ventilation, resulting in carbon dioxide retention.

💟 Minute ventilation is determined by respiratory rate and tidal volume, so increasing tidal volume can increase the amount of air moved each minute.

💟 Increased effective alveolar ventilation promotes greater carbon dioxide elimination and can lower PaCO₂.

💟 Tidal-volume changes must remain within lung-protective ventilation parameters because excessive volumes can cause volutrauma or barotrauma.

💟 The patient's PaO₂ of 93 mmHg indicates adequate oxygenation, so the primary problem is ventilation rather than oxygenation.

💟 Increasing the set tidal volume, when clinically appropriate and safely prescribed, can therefore help correct the hypercapnic respiratory acidosis.

Increase ventilator rate

💟 Increasing the ventilator respiratory rate increases minute ventilation when tidal volume remains constant.

💟 Greater minute ventilation allows more carbon dioxide to be eliminated from the lungs each minute.

💟 The elevated PaCO₂ of 52 mmHg indicates that the patient is not eliminating carbon dioxide adequately.

💟 Reducing PaCO₂ should move the pH of 7.31 toward the normal range.

💟 Increasing respiratory rate is a common ventilator adjustment used to improve ventilation in a patient with respiratory acidosis.

💟 The nurse should continue monitoring ABGs and the patient's respiratory status after ventilator settings are adjusted.

💟 Excessive respiratory rates should be avoided because they can shorten expiratory time and contribute to air trapping or auto-PEEP in susceptible patients.

💟 Increasing the ventilator rate therefore directly addresses the patient's inadequate carbon dioxide elimination.

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QLexNursing

1 :
The nurse is caring for a mechanically ventilated patient with a pulmonary artery catheter who is receiving continuous enteral tube feedings. When obtaining continuous hermodynamic monitoring measurements, what is the best nursing action?

2 :
What are some potential complications of CRRT as well as conventional dialysis? Select all that apply.

3 :
The wife of a burn victim in your unit approaches you very distraught. Her husband has survived and is stable; however, has suffered some disfigurement to his face and upper extremities. She doesn't know how he will handle this and how she can help him. What is the best thing you can do for her?

4 :
A patient with a head injury has an intracranial pressure (ICP) of 18 mmHg, blood pressure of 144/90 mmHg, and mean arterial pressure (MAP) of 108 mmHg. What is the cerebral perfusion pressure (CPP)?

5 :
The nurse is caring for a mechanically ventilated patient and responds to a high inspiratory pressure alarm. Recognizing possible causes for the alarm, the nurse assesses for which of the following?

7 :
Dobutamine (500mg/250mL) was ordered to start at 4mcg/kg/min on a 95 kg patient. What would be the infusion rate in ml/hr? Round to the nearest tenth.

8 :
The nurse understands that which of the following medications increases cardiac contractility?

9 :
The nurse is caring for a patient in the early stages of septic shock. The patient is slightly confused and flushed, with bounding peripheral pulses. Which hemodynamic values would the nurse anticipate?

10 :
The nurse obtains the following arterial blood gas (ABG) results for a client on a mechanical ventilator:
pH 7.31
PC02 52
HCO3 23
pa02 93
Which of the following ventilator changes would be appropriate for this client? Select all that apply.

QLexNursing

1 : The nurse is caring for a mechanically ventilated patient with a pulmonary artery catheter who is receiving continuous enteral tube feedings. When obtaining continuous hermodynamic monitoring measurements, what is the best nursing action?

2 : What are some potential complications of CRRT as well as conventional dialysis? Select all that apply.

4 : A patient with a head injury has an intracranial pressure (ICP) of 18 mmHg, blood pressure of 144/90 mmHg, and mean arterial pressure (MAP) of 108 mmHg. What is the cerebral perfusion pressure (CPP)?

5 : The nurse is caring for a mechanically ventilated patient and responds to a high inspiratory pressure alarm. Recognizing possible causes for the alarm, the nurse assesses for which of the following?

7 : Dobutamine (500mg/250mL) was ordered to start at 4mcg/kg/min on a 95 kg patient. What would be the infusion rate in ml/hr? Round to the nearest tenth.

8 : The nurse understands that which of the following medications increases cardiac contractility?

9 : The nurse is caring for a patient in the early stages of septic shock. The patient is slightly confused and flushed, with bounding peripheral pulses. Which hemodynamic values would the nurse anticipate?

10 : The nurse obtains the following arterial blood gas (ABG) results for a client on a mechanical ventilator: pH 7.31 PC02 52 HCO3 23 pa02 93 Which of the following ventilator changes would be appropriate for this client? Select all that apply.

1 :
The nurse is caring for a mechanically ventilated patient with a pulmonary artery catheter who is receiving continuous enteral tube feedings. When obtaining continuous hermodynamic monitoring measurements, what is the best nursing action?

2 :
What are some potential complications of CRRT as well as conventional dialysis? Select all that apply.

4 :
A patient with a head injury has an intracranial pressure (ICP) of 18 mmHg, blood pressure of 144/90 mmHg, and mean arterial pressure (MAP) of 108 mmHg. What is the cerebral perfusion pressure (CPP)?

5 :
The nurse is caring for a mechanically ventilated patient and responds to a high inspiratory pressure alarm. Recognizing possible causes for the alarm, the nurse assesses for which of the following?

7 :
Dobutamine (500mg/250mL) was ordered to start at 4mcg/kg/min on a 95 kg patient. What would be the infusion rate in ml/hr? Round to the nearest tenth.

8 :
The nurse understands that which of the following medications increases cardiac contractility?

9 :
The nurse is caring for a patient in the early stages of septic shock. The patient is slightly confused and flushed, with bounding peripheral pulses. Which hemodynamic values would the nurse anticipate?

10 :
The nurse obtains the following arterial blood gas (ABG) results for a client on a mechanical ventilator:
pH 7.31
PC02 52
HCO3 23
pa02 93
Which of the following ventilator changes would be appropriate for this client? Select all that apply.