ACLS Pre-Course Self-Assessment
The ACLS pre-course self-assessment helps learners recognize key cardiac rhythms like atrial flutter, shown in this ECG strip by its characteristic “sawtooth” wave pattern. This tool ensures readiness for advanced cardiac life support training and clinical decision-making.
Identify The ECG Strip
Atrial Flutter

Key Terms
Identify The ECG Strip
Atrial Flutter
Identify The ECG Strip
Second-degree atrioventricular block (Mobitz I Wenckebach)
Identify The ECG Strip
Ventricular fibrillation
Identify The ECG Strip
Second-degree atrioventricular block (Mobitz I Wenckebach)
Identify The ECG Strip
Monomorphic ventricular tachycardia
Identify The ECG Strip
Second-degree atrioventricular block (Mobitz II block)
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| Term | Definition |
|---|---|
Identify The ECG Strip | Atrial Flutter |
Identify The ECG Strip | Second-degree atrioventricular block (Mobitz I Wenckebach) |
Identify The ECG Strip | Ventricular fibrillation |
Identify The ECG Strip | Second-degree atrioventricular block (Mobitz I Wenckebach) |
Identify The ECG Strip | Monomorphic ventricular tachycardia |
Identify The ECG Strip | Second-degree atrioventricular block (Mobitz II block) |
Identify The ECG Strip | Ventricular fibrillation |
Identify The ECG Strip | Ventricular fibrillation |
Identify The ECG Strip | Atrial fibrillation |
Identify The ECG Strip | Pulseless electrical activity |
Identify The ECG Strip | Sinus Bradycardia |
Identify The ECG Strip | Supraventricular Tachycardia |
Identify The ECG Strip | Sinus Tachycardia |
Identify The ECG Strip | Third-degree Atrioventricular block |
Identify The ECG Strip | Normal Sinus Rhythm |
Identify The ECG Strip | Polymorphic Ventricular Tachycardia |
Identify The ECG Strip | Agonal Rhythm/Asystole |
Identify The ECG Strip | Second-degree Atrioventricular Block (Mobitz II Block) |
Identify The ECG Strip | Sinus Bradycardia |
Identify The ECG Strip | Supraventricular Tachycardia |
A monitored patient in the ICU developed a sudden onset of narrow-complex tachycardia at a rate of 220/min. The patient's blood pressure is 128/58 mm Hg, the PETCO2 is 38 mm Hg, and the pulse oximetry reading is 98%. There is vascular access in the left arm, and the patient has not been given any vasoactive drugs. A 12-lead ECG confirms a supraventricular tachycardia with no evidence of ischemia or infarction. The heart rate has not responded to vagal maneuvers. What is your next action? | Administer adenosine 6 mg IV push |
You are caring for a 66-year-old man with a history of a large intracerebral hemorrhage 2 months ago. He is being evaluated for another acute stroke. The CT scan is negative for hemorrhage. The patient is receiving oxygen via nasal cannula at 2 L/min, and an IV has been established. His blood pressure is 180/100 mm Hg. Which drug do you anticipate giving to this patient? | Aspirin |
A patient is in pulseless ventricular tachycardia. Two shocks and 1 dose of epinephrine have been given. Which drug should be given next? | Amiodarone 300 mg |
A patient with possible STEMI has ongoing chest discomfort. What is a contraindication to nitrate administration? | Use of a phosphodiesterase inhibitor within the previous 24 hours |
A patient is in cardiac arrest. High-quality chest compressions are being given. The patient is intubated, and an IV has been started. The rhythm is asystole. What is the first drug/dose to administer? | Epinephrine 1 mg IV/IO |
A patient is in refractory ventricular fibrillation. High-quality CPR is in progress. One dose of epinephrine was given after the second shock. An antiarrhythmic drug was given immediately after the third shock. You are the team leader. Which medication do you order next? | Epinephrine 1 mg |
Which intervention is most appropriate for the treatment of a patient in asystole? | Epinephrine |
A patient with sinus bradycardia and a heart rate of 42/min has diaphoresis and a blood pressure of 80/60 mm Hg. What is the initial dose of atropine? | 1 mg |
A patient with STEMI has ongoing chest discomfort. Heparin 4000 units IV bolus and a heparin infusion of 1000 units per hour are being administered. The patient did not take aspirin because he has a history of gastritis, which was treated 5 years ago. What is your next action? | Give aspirin 162 to 325 mg to chew |
A 57-year-old woman has palpitations, chest discomfort, and tachycardia. The monitor shows a regular wide-complex QRS at a rate of 180/min. She becomes diaphoretic, and her blood pressure is 80/60 mm Hg. Which action do you take next? | Perform electrical cardioversion |
A patient is in refractory ventricular fibrillation and has received multiple appropriate defibrillation shocks, epinephrine 1 mg IV twice, and an initial dose of amiodarone 300 mg IV. The patient is intubated. Which best describes the recommended second dose of amiodarone for this patient? | 150 mg IV push |
A patient has sinus bradycardia with a heart rate of 36/min. Atropine has been administered to a total dose of 3 mg. A transcutaneous pacemaker has failed to capture. The patient is confused, and her blood pressure is 88/56 mm Hg. Which therapy is now indicated? | Epinephrine 2 to 10 mcg/min |
A patient is in cardiac arrest. Ventricular fibrillation has been refractory to an initial shock. If no pathway for medication administration is in place, which method is preferred? | IV or IO |
A patient is in cardiac arrest. Ventricular fibrillation has been refractory to a second shock. Which drug should be administered first? | Epinephrine 1 mg IV/IO |
A patient has a rapid irregular wide-complex tachycardia. The ventricular rate is 138/min. He is asymptomatic, with a blood pressure of 110/70 mm Hg. He has a history of angina. What action is recommended next? | Seeking expert consultation |
In which situation does bradycardia require treatment? | Hypotension |
What is the indication for the use of magnesium in cardiac arrest? | Pulseless ventricular tachycardia-associated torsades de pointes |
You arrive on the scene with the code team. High-quality CPR is in progress. An AED has previously advised "no shock indicated." A rhythm check now finds asystole. After resuming high-quality compressions, which action do you take next? | Establish IV or IO access |
A 35-year-old woman has palpitations, light-headedness, and a stable tachycardia. The monitor shows a regular narrow-complex QRS at a rate of 180/min. Vagal maneuvers have not been effective in terminating the rhythm. An IV has been established. Which drug should be administered? | Adenosine 6 mg |
A 62-year-old man suddenly experienced difficulty speaking and left-sided weakness. He meets initial criteria for fibrinolytic therapy, and a CT scan of the brain is ordered. Which best describes the guidelines for antiplatelet and fibrinolytic therapy? | Hold aspirin for at least 24 hours if rtPA is administered |
How often should you switch chest compressors to avoid fatigue? | About every 2 minutes |
Your patient is a 56-year-old woman with a history of type 2 diabetes who reports feeling dizzy. She is pale and diaphoretic. Her blood pressure is 80/60 mm Hg. The cardiac monitor documents the rhythm shown here. She is receiving oxygen at 4 L/min by nasal cannula, and an IV has been established. What do you administer next? | Atropine 1 mg IV |
What action minimizes the risk of air entering the victim's stomach during bag-mask ventilation? | Ventilating until you see the chest rise |
How does complete chest recoil contribute to effective CPR? | Allows maximum blood return to the heart |
A patient's 12-lead ECG is transmitted by the paramedics and shows a STEMI. When the patient arrives in the emergency department, the rhythm shown here is seen on the cardiac monitor. The patient has resolution of moderate (5/10) chest pain after 3 doses of sublingual nitroglycerin. Blood pressure is 104/70 mm Hg. Which intervention is most important in reducing this patient's in-hospital and 30-day mortality rate? | Reperfusion therapy |
Which action is likely to cause air to enter the victim's stomach (gastric inflation) during bag-mask ventilation? | Ventilating too quickly |
A patient becomes unresponsive. You are uncertain if a faint pulse is present. The rhythm shown here is seen on the cardiac monitor. An IV is in place. Which action do you take next? | Start high-quality CPR |
A patient has been resuscitated from cardiac arrest. During post-ROSC treatment, the patient becomes unresponsive, with the rhythm shown here. Which action is indicated next? | Give an immediate unsynchronized high-energy shock (defibrillation dose) |
What is the maximum interval for pausing chest compressions? | 10 seconds |
Which action should you take immediately after providing an AED shock? | Resume chest compressions |
Your patient is not responsive and is not breathing. You can palpate a carotid pulse. Which action do you take next? | Start rescue breathing |
You arrive on the scene to find CPR in progress. Nursing staff report the patient was recovering from a pulmonary embolism and suddenly collapsed. Two shocks have been delivered, and an IV has been initiated. What do you administer now? | Epinephrine 1 mg IV |
A patient was in refractory ventricular fibrillation. A third shock has just been administered. Your team looks to you for instructions. What is your next action? | Resume high-quality chest compressions |
A 45-year-old woman with a history of palpitations develops light-headedness and palpitations. She has received adenosine 6 mg IV for the rhythm shown here, without conversion of the rhythm. She is now extremely apprehensive. Her blood pressure is 128/70 mm Hg. What is the next appropriate intervention? | Administer adenosine 12 mg IV |
What is the recommended depth of chest compressions for an adult victim? | At least 2 inches |
You are the code team leader and arrive to find a patient with CPR in progress. On the next rhythm check, you see the rhythm shown here. Team members tell you that the patient was well but reported chest discomfort and then collapsed. She has no pulse or respirations. Bag-mask ventilations are producing visible chest rise, and IO access has been established. Which intervention would be your next action? | Epinephrine 1 mg |
After initiation of CPR and 1 shock for ventricular fibrillation, this rhythm is present on the next rhythm check. A second shock is given, and chest compressions are resumed immediately. An IV is in place, and no drugs have been given. Bag-mask ventilations are producing visible chest rise. What is your next intervention? | Give epinephrine 1 mg IV/IO |
A 35-year-old woman presents with a chief complaint of palpitations. She has no chest discomfort, shortness of breath, or light-headedness. Her blood pressure is 120/78 mm Hg. Which intervention is indicated first? | Vagal maneuvers |
You are providing bag-mask ventilations to a patient in respiratory arrest. How often should you provide ventilations? | Every 6 seconds |
What is the recommended compression rate for high-quality CPR? | 100 to 120 compressions per minute |