CPR - Certified Paramedic Response Post-Cardiac Arrest Care Questions and Answers 1 — Questions and Answers
Question 1: A 65-year-old male has achieved ROSC after a VF arrest. His initial blood pressure is 78/40 mmHg and he has an advanced airway in place. What is the most appropriate initial intervention to manage his hypotension?
- Immediately initiate a norepinephrine infusion.
- Perform synchronized cardioversion at 100J.
- Administer a 1-2 liter bolus of isotonic crystalloid. (Correct answer)
- Administer 1 mg of epinephrine IV push.
Correct answer: Administer a 1-2 liter bolus of isotonic crystalloid.
The immediate priority in post-ROSC hypotension is to correct potential hypovolemia. An isotonic crystalloid bolus is the first-line treatment. If hypotension persists after fluid administration, vasopressor therapy is then indicated to maintain a systolic blood pressure >90 mmHg or a mean arterial pressure >65 mmHg.
Question 2: During the post-cardiac arrest care of a patient with ROSC, which of the following represents the primary goal for oxygenation and ventilation management to prevent secondary brain injury?
- Maximize oxygen delivery by maintaining an SpO2 of 100% with high-flow oxygen.
- Titrate oxygen to maintain SpO2 of 92-98% and adjust ventilations to achieve an ETCO2 of 35-45 mmHg. (Correct answer)
- Hyperventilate the patient at a rate of 20-24 breaths/min to lower intracranial pressure.
- Maintain an ETCO2 between 50-60 mmHg to promote cerebral vasodilation.
Correct answer: Titrate oxygen to maintain SpO2 of 92-98% and adjust ventilations to achieve an ETCO2 of 35-45 mmHg.
Post-ROSC care emphasizes avoiding secondary brain injury. Hyperoxia can increase oxidative stress, and both hypocapnia (from hyperventilation) and hypercapnia can negatively affect cerebral blood flow. Therefore, titrating oxygen to an SpO2 of 92-98% and maintaining normocapnia (ETCO2 35-45 mmHg) are crucial goals.
Question 3: You have successfully resuscitated a 50-year-old female from a witnessed pulseless VT arrest. She has ROSC but remains comatose. According to current guidelines, what intervention should be initiated as soon as feasible to improve neurological outcomes?
- Targeted Temperature Management (TTM) with a target of 32-36°C. (Correct answer)
- Administration of high-dose corticosteroids.
- Rapid infusion of warmed IV fluids to prevent shivering.
- Placing the patient in a Trendelenburg position.
Correct answer: Targeted Temperature Management (TTM) with a target of 32-36°C.
For adult patients who remain comatose after ROSC from an out-of-hospital cardiac arrest, Targeted Temperature Management (TTM) is a key intervention to improve the likelihood of a good neurological outcome. This involves actively cooling the patient to a target temperature between 32°C and 36°C for at least 24 hours.
Question 4: Which of the following is the most critical diagnostic procedure to perform as soon as feasible after a patient achieves ROSC to guide transport decisions and potential immediate interventions?
- A field glucose check.
- A detailed neurological exam.
- Arterial blood gas analysis.
- A 12-lead ECG. (Correct answer)
Correct answer: A 12-lead ECG.
A significant portion of adult out-of-hospital cardiac arrests are caused by acute coronary occlusion. A post-ROSC 12-lead ECG is essential to identify ST-segment elevation myocardial infarction (STEMI), which would necessitate immediate transport to a hospital capable of percutaneous coronary intervention (PCI).
Question 5: A patient with ROSC is being transported. Initially stable, their BP drops to 60/palp, they become cyanotic, and you note absent lung sounds on the left side with tracheal deviation to the right. What is the most likely reversible cause of this acute deterioration?
- Acute myocardial re-infarction.
- Tension pneumothorax. (Correct answer)
- Massive pulmonary embolism.
- Cardiac tamponade.
Correct answer: Tension pneumothorax.
This clinical picture is a classic presentation of a tension pneumothorax, one of the reversible 'H and T' causes. Air has accumulated in the pleural space, collapsing the lung and shifting the mediastinum, which obstructs venous return to the heart, causing obstructive shock. This requires immediate needle decompression.
Question 6: The comprehensive post-cardiac arrest care plan for an adult patient who has achieved ROSC primarily focuses on which set of goals?
- Administering prophylactic antiarrhythmics, obtaining a chest x-ray, and restricting all fluid intake.
- Rapidly rewarming the patient, administering sodium bicarbonate, and inducing a medical coma.
- Optimizing hemodynamics and ventilation, considering Targeted Temperature Management, and identifying/treating the precipitating cause. (Correct answer)
- Focusing solely on airway protection and waiting for hospital-based interventions.
Correct answer: Optimizing hemodynamics and ventilation, considering Targeted Temperature Management, and identifying/treating the precipitating cause.
Effective post-cardiac arrest care is a bundle of interventions. The core components include: 1) Stabilizing the patient's circulatory and respiratory status (hemodynamics and ventilation), 2) Protecting the brain from secondary injury (primarily with TTM for comatose patients), and 3) Diagnosing and treating the underlying reversible causes (e.g., STEMI) that led to the arrest.
CPR - Certified Paramedic Response Post-Cardiac Arrest Care Questions and Answers 1
A 65-year-old male has achieved ROSC after a VF arrest.
His initial blood pressure is 78/40 mmHg and he has an advanced airway in place.
What is the most appropriate initial intervention to manage his hypotension?
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