# The Vanguard of Vigilance: Mastering Critical
Care Resuscitation & Hemodynamics
**1. A patient arrives in the emergency department via ambulance after a high-speed motor vehicle
collision. The patient is unresponsive, has a deviated trachea to the right, absent breath sounds on the
left, and distended neck veins. What is the priority intervention?**
A. Initiate rapid sequence intubation using video laryngoscopy.
B. Insert a 14-gauge needle into the second intercostal space, left midclavicular line.
C. Obtain a stat portable chest x-ray to confirm endotracheal tube placement.
D. Perform immediate needle decompression followed by chest tube insertion.
💫RATIONALE✔️✔️: The patient presents with a tension pneumothorax (deviated trachea, absent breath
sounds, distended neck veins, unresponsiveness). Immediate decompression is required to prevent
cardiovascular collapse. The most rapid, life-saving intervention is needle decompression at the 2nd
intercostal space, midclavicular line, which converts the tension pneumothorax to a simple
pneumothorax. A chest tube is then placed for definitive management. Intubation alone does not
relieve the intrathoracic pressure and may worsen the condition with positive pressure ventilation. A
chest x-ray would delay life-saving treatment.
💫ANSWER✔️✔️: D. Perform immediate needle decompression followed by chest tube insertion.
---
**2. A nurse is monitoring a patient with a pulmonary artery (PA) catheter. The PA waveform shows a
systolic of 25 mmHg and a diastolic of 8 mmHg. The nurse observes a progressive rise in the diastolic
pressure to 18 mmHg over 15 minutes without a change in the waveform morphology. Which
intervention is the priority?**
A. Zero and reference the transducer at the phlebostatic axis.
B. Attempt to aspirate blood from the distal port and then gently flush.
C. Obtain a stat chest x-ray to verify the catheter tip location.
D. Inflate the balloon fully and advance the catheter 2 cm during diastole.
,💫RATIONALE✔️✔️: A progressive rise in the PA diastolic pressure without a change in waveform (no
"wedging") indicates spontaneous catheter migration into the wedged position, which can lead to
pulmonary infarction or vessel rupture. The balloon should never be left inflated, and the catheter
should not be routinely flushed when persistently wedged. The priority is to verify overwedging or a
permanent wedge by aspirating blood (ensuring the port is not against the vessel wall) and flushing
gently to float the tip back, or notifying the provider immediately. Zeroing does not correct a mechanical
wedging.
💫ANSWER✔️✔️: B. Attempt to aspirate blood from the distal port and then gently flush.
---
**3. A nurse is caring for a patient who is 6 hours post-operative from a coronary artery bypass graft
(CABG) surgery. The patient’s chest tube drainage has suddenly increased from 50 mL/hour to 350 mL in
the last hour and is now bright red and warm. Which of the following actions should the nurse take
first?**
A. Assess the patient's blood pressure and heart rate.
B. Administer the ordered stat IV fluid bolus and prepare for mass transfusion protocol.
C. Notify the surgeon immediately of the suspected graft rupture.
D. Strip or milk the chest tubes to remove any clots causing obstruction.
💫RATIONALE✔️✔️: Sudden, massive, bright red drainage post-CABG indicates possible graft dehiscence,
mediastinal bleeding, or a ruptured suture line, which is a surgical emergency. While assessing vitals is
critical, the nurse must immediately notify the surgeon while a colleague obtains vitals. Stripping chest
tubes creates excessive negative pressure and can damage tissue; milking is generally avoided unless
specifically ordered for a visible clot obstruction, which is not the primary issue here (the issue is fresh,
rapid bleeding). Fluid resuscitation is initiated concurrently but not before notifying the provider of the
emergent need for potential reopening of the chest.
💫ANSWER✔️✔️: C. Notify the surgeon immediately of the suspected graft rupture.
---
**4. The rapid response team is evaluating a patient with septic shock. The patient has a blood pressure
of 80/45 mmHg, CVP of 2 mmHg, and SvO2 of 55%. The provider orders a 500 mL crystalloid bolus. What
is the primary goal of this initial fluid resuscitation?**
,A. To increase systemic vascular resistance and reduce afterload.
B. To increase preload and improve stroke volume via the Frank-Starling mechanism.
C. To increase the hematocrit and oxygen-carrying capacity of the blood.
D. To stimulate the baroreceptors and induce a reflexive tachycardia.
💫RATIONALE✔️✔️: In early septic shock, hypotension is often due to relative and absolute hypovolemia
causing low preload (reflected by a low CVP of 2 mmHg) and poor cardiac output (low SvO2 of 55%).
Fluid boluses work by increasing the preload. According to the Frank-Starling law, increasing ventricular
filling stretches myocardial fibers, leading to a more forceful contraction and increased stroke volume,
thereby improving cardiac output and tissue perfusion.
💫ANSWER✔️✔️: B. To increase preload and improve stroke volume via the Frank-Starling mechanism.
---
**5. A nurse is caring for a patient admitted with third-degree heart block. The patient suddenly
becomes dizzy, confused, and has a heart rate of 32 bpm and a blood pressure of 74/42 mmHg.
Transcutaneous pacing pads are applied, and the pacer begins to fire. Which of the following indicates
effective electrical capture?**
A. A visible spike followed by a wide QRS complex on the monitor.
B. The patient's heart rate matching the set rate of the pacer on the monitor screen.
C. A palpable carotid pulse corresponding with each pacer spike.
D. The patient’s dizziness subsiding completely.
💫RATIONALE✔️✔️: Electrical capture specifically refers to the heart's depolarization in response to the
pacing stimulus. It is confirmed on the ECG by a pacing spike immediately followed by a QRS complex
(usually wide, because the impulse originates in the ventricle, not the native conduction system).
Mechanical capture is the palpable pulse following the spike. The monitor screen may show the pacer
firing regardless of capture, and symptom relief indicates perfusion, which requires both electrical and
mechanical capture.
💫ANSWER✔️✔️: A. A visible spike followed by a wide QRS complex on the monitor.
---
, **6. A nurse is titrating a norepinephrine infusion for a patient with septic shock. The current dose is 15
mcg/min, and the MAP is 58 mmHg. The target MAP is 65 mmHg. The patient has a history of atrial
fibrillation. Which of the following side effects is most critical to monitor for when increasing the
dose?**
A. Reflex bradycardia and bronchospasm.
B. Tachyarrhythmias and increased myocardial oxygen demand.
C. Lactic acidosis and peripheral cyanosis.
D. Hypertensive crisis and intracranial hemorrhage.
💫RATIONALE✔️✔️: Norepinephrine is a potent alpha- and beta-1 adrenergic agonist. While it primarily
increases systemic vascular resistance (alpha-1) to raise blood pressure, it also has beta-1 effects that
increase contractility and heart rate. In a patient with a history of atrial fibrillation, the increased
chronotropy and myocardial workload can precipitate tachyarrhythmias like rapid atrial fibrillation and
increase myocardial oxygen demand, risking ischemia.
💫ANSWER✔️✔️: B. Tachyarrhythmias and increased myocardial oxygen demand.
---
**7. A patient with an acute anterior ST-segment elevation myocardial infarction (STEMI) is undergoing
a primary percutaneous coronary intervention (PCI). The nurse administers a loading dose of ticagrelor
and aspirin. The patient suddenly develops an altered level of consciousness, left-sided facial droop, and
hemiplegia. Which action should the nurse take first?**
A. Stop the ticagrelor infusion and draw stat coagulation labs.
B. Notify the interventional cardiologist and prepare for a stat CT scan of the head.
C. Assess the patient's blood glucose level using a bedside glucometer.
D. Administer oxygen via a non-rebreather mask at 15 L/min.
💫RATIONALE✔️✔️: The sudden onset of focal neurological deficits during PCI suggests an embolic or
hemorrhagic stroke. Rapid identification via a non-contrast CT scan is critical to differentiate ischemic
from hemorrhagic stroke, which guides subsequent treatment (thrombolytic reversal vs.
thrombectomy). Assessing glucose is part of the stroke workup but is not the priority. While stopping
anticoagulants may be prudent, the priority is to activate the stroke team and obtain an emergent head
CT to determine if the ticagrelor/aspirin load has caused a bleed.
💫ANSWER✔️✔️: B. Notify the interventional cardiologist and prepare for a stat CT scan of the head.
Care Resuscitation & Hemodynamics
**1. A patient arrives in the emergency department via ambulance after a high-speed motor vehicle
collision. The patient is unresponsive, has a deviated trachea to the right, absent breath sounds on the
left, and distended neck veins. What is the priority intervention?**
A. Initiate rapid sequence intubation using video laryngoscopy.
B. Insert a 14-gauge needle into the second intercostal space, left midclavicular line.
C. Obtain a stat portable chest x-ray to confirm endotracheal tube placement.
D. Perform immediate needle decompression followed by chest tube insertion.
💫RATIONALE✔️✔️: The patient presents with a tension pneumothorax (deviated trachea, absent breath
sounds, distended neck veins, unresponsiveness). Immediate decompression is required to prevent
cardiovascular collapse. The most rapid, life-saving intervention is needle decompression at the 2nd
intercostal space, midclavicular line, which converts the tension pneumothorax to a simple
pneumothorax. A chest tube is then placed for definitive management. Intubation alone does not
relieve the intrathoracic pressure and may worsen the condition with positive pressure ventilation. A
chest x-ray would delay life-saving treatment.
💫ANSWER✔️✔️: D. Perform immediate needle decompression followed by chest tube insertion.
---
**2. A nurse is monitoring a patient with a pulmonary artery (PA) catheter. The PA waveform shows a
systolic of 25 mmHg and a diastolic of 8 mmHg. The nurse observes a progressive rise in the diastolic
pressure to 18 mmHg over 15 minutes without a change in the waveform morphology. Which
intervention is the priority?**
A. Zero and reference the transducer at the phlebostatic axis.
B. Attempt to aspirate blood from the distal port and then gently flush.
C. Obtain a stat chest x-ray to verify the catheter tip location.
D. Inflate the balloon fully and advance the catheter 2 cm during diastole.
,💫RATIONALE✔️✔️: A progressive rise in the PA diastolic pressure without a change in waveform (no
"wedging") indicates spontaneous catheter migration into the wedged position, which can lead to
pulmonary infarction or vessel rupture. The balloon should never be left inflated, and the catheter
should not be routinely flushed when persistently wedged. The priority is to verify overwedging or a
permanent wedge by aspirating blood (ensuring the port is not against the vessel wall) and flushing
gently to float the tip back, or notifying the provider immediately. Zeroing does not correct a mechanical
wedging.
💫ANSWER✔️✔️: B. Attempt to aspirate blood from the distal port and then gently flush.
---
**3. A nurse is caring for a patient who is 6 hours post-operative from a coronary artery bypass graft
(CABG) surgery. The patient’s chest tube drainage has suddenly increased from 50 mL/hour to 350 mL in
the last hour and is now bright red and warm. Which of the following actions should the nurse take
first?**
A. Assess the patient's blood pressure and heart rate.
B. Administer the ordered stat IV fluid bolus and prepare for mass transfusion protocol.
C. Notify the surgeon immediately of the suspected graft rupture.
D. Strip or milk the chest tubes to remove any clots causing obstruction.
💫RATIONALE✔️✔️: Sudden, massive, bright red drainage post-CABG indicates possible graft dehiscence,
mediastinal bleeding, or a ruptured suture line, which is a surgical emergency. While assessing vitals is
critical, the nurse must immediately notify the surgeon while a colleague obtains vitals. Stripping chest
tubes creates excessive negative pressure and can damage tissue; milking is generally avoided unless
specifically ordered for a visible clot obstruction, which is not the primary issue here (the issue is fresh,
rapid bleeding). Fluid resuscitation is initiated concurrently but not before notifying the provider of the
emergent need for potential reopening of the chest.
💫ANSWER✔️✔️: C. Notify the surgeon immediately of the suspected graft rupture.
---
**4. The rapid response team is evaluating a patient with septic shock. The patient has a blood pressure
of 80/45 mmHg, CVP of 2 mmHg, and SvO2 of 55%. The provider orders a 500 mL crystalloid bolus. What
is the primary goal of this initial fluid resuscitation?**
,A. To increase systemic vascular resistance and reduce afterload.
B. To increase preload and improve stroke volume via the Frank-Starling mechanism.
C. To increase the hematocrit and oxygen-carrying capacity of the blood.
D. To stimulate the baroreceptors and induce a reflexive tachycardia.
💫RATIONALE✔️✔️: In early septic shock, hypotension is often due to relative and absolute hypovolemia
causing low preload (reflected by a low CVP of 2 mmHg) and poor cardiac output (low SvO2 of 55%).
Fluid boluses work by increasing the preload. According to the Frank-Starling law, increasing ventricular
filling stretches myocardial fibers, leading to a more forceful contraction and increased stroke volume,
thereby improving cardiac output and tissue perfusion.
💫ANSWER✔️✔️: B. To increase preload and improve stroke volume via the Frank-Starling mechanism.
---
**5. A nurse is caring for a patient admitted with third-degree heart block. The patient suddenly
becomes dizzy, confused, and has a heart rate of 32 bpm and a blood pressure of 74/42 mmHg.
Transcutaneous pacing pads are applied, and the pacer begins to fire. Which of the following indicates
effective electrical capture?**
A. A visible spike followed by a wide QRS complex on the monitor.
B. The patient's heart rate matching the set rate of the pacer on the monitor screen.
C. A palpable carotid pulse corresponding with each pacer spike.
D. The patient’s dizziness subsiding completely.
💫RATIONALE✔️✔️: Electrical capture specifically refers to the heart's depolarization in response to the
pacing stimulus. It is confirmed on the ECG by a pacing spike immediately followed by a QRS complex
(usually wide, because the impulse originates in the ventricle, not the native conduction system).
Mechanical capture is the palpable pulse following the spike. The monitor screen may show the pacer
firing regardless of capture, and symptom relief indicates perfusion, which requires both electrical and
mechanical capture.
💫ANSWER✔️✔️: A. A visible spike followed by a wide QRS complex on the monitor.
---
, **6. A nurse is titrating a norepinephrine infusion for a patient with septic shock. The current dose is 15
mcg/min, and the MAP is 58 mmHg. The target MAP is 65 mmHg. The patient has a history of atrial
fibrillation. Which of the following side effects is most critical to monitor for when increasing the
dose?**
A. Reflex bradycardia and bronchospasm.
B. Tachyarrhythmias and increased myocardial oxygen demand.
C. Lactic acidosis and peripheral cyanosis.
D. Hypertensive crisis and intracranial hemorrhage.
💫RATIONALE✔️✔️: Norepinephrine is a potent alpha- and beta-1 adrenergic agonist. While it primarily
increases systemic vascular resistance (alpha-1) to raise blood pressure, it also has beta-1 effects that
increase contractility and heart rate. In a patient with a history of atrial fibrillation, the increased
chronotropy and myocardial workload can precipitate tachyarrhythmias like rapid atrial fibrillation and
increase myocardial oxygen demand, risking ischemia.
💫ANSWER✔️✔️: B. Tachyarrhythmias and increased myocardial oxygen demand.
---
**7. A patient with an acute anterior ST-segment elevation myocardial infarction (STEMI) is undergoing
a primary percutaneous coronary intervention (PCI). The nurse administers a loading dose of ticagrelor
and aspirin. The patient suddenly develops an altered level of consciousness, left-sided facial droop, and
hemiplegia. Which action should the nurse take first?**
A. Stop the ticagrelor infusion and draw stat coagulation labs.
B. Notify the interventional cardiologist and prepare for a stat CT scan of the head.
C. Assess the patient's blood glucose level using a bedside glucometer.
D. Administer oxygen via a non-rebreather mask at 15 L/min.
💫RATIONALE✔️✔️: The sudden onset of focal neurological deficits during PCI suggests an embolic or
hemorrhagic stroke. Rapid identification via a non-contrast CT scan is critical to differentiate ischemic
from hemorrhagic stroke, which guides subsequent treatment (thrombolytic reversal vs.
thrombectomy). Assessing glucose is part of the stroke workup but is not the priority. While stopping
anticoagulants may be prudent, the priority is to activate the stroke team and obtain an emergent head
CT to determine if the ticagrelor/aspirin load has caused a bleed.
💫ANSWER✔️✔️: B. Notify the interventional cardiologist and prepare for a stat CT scan of the head.
