TheoryFree ACLS Practice Test
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ACLS Questions
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Q1For cases of significant adult bradycardia accompanied by poor perfusion, what specific medications would you administer, and at what dosages?
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✓ Correct answer: Atropine .5 mg followed by Dopamine 2-10 mcg/kg/min or Epi 2-10 mcg/min
For cases of significant adult bradycardia accompanied by poor perfusion, the correct medications to administer are Atropine followed by either Dopamine or Epinephrine, depending on the dosage.<br/><br/>Option D (none of the above) is the wrong answer because there are specific medications that should be administered in this situation.<br/><br/>Option C (Epi 0.01 mg/kg followed by Atropine 0.5 mg or Dopamine 5-10 mcg/kg/min) is incorrect because the order of administration is incorrect. Atropine should be given first, followed by either Dopamine or Epinephrine.<br/><br/>Option B (Atropine 1 mg followed by Epi 0.01 mg/kg or Dopamine 5-10 mcg/kg/min) is also incorrect because the dosage for Atropine is higher than the recommended .5 mg. Additionally, the order of administration is incorrect.<br/><br/>In summary, the correct answer is A) Atropine .5 mg followed by Dopamine 2-10 mcg/kg/min or Epi 2-10 mcg/min. This combination and dosage will help improve perfusion in cases of significant adult bradycardia.
Q2(True or False) After initiating external pacing, you should assess the carotid pulse to confirm mechanical capture.
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✓ Correct answer: False
After initiating external pacing, you should not assess the carotid pulse to confirm mechanical capture.<br/><br/>External pacing is a method of providing electrical stimulation to pace the heart and increase the heart rate in patients with symptomatic bradycardia or heart blocks that are unresponsive to medications.<br/><br/>The electrical stimulation during external pacing may cause muscular jerking that can mimic the carotid pulse, leading to a false sense of mechanical capture.<br/><br/>Instead, the provider should monitor the patient's cardiac rhythm and the presence of electrical capture on the ECG monitor. This is confirmed by observing consistent pacing spikes on the ECG tracing, which indicate that the electrical impulse is reaching the heart and causing depolarization.
Q3A 46-year-old patient arrives with complaints of fatigue and dyspnea upon exertion. Clear lung sounds and an oxygen saturation of 94% are noted. The patient's blood pressure (BP) reads 80/42, and the heart rate (HR) is 49. In response, oxygen supplementation is initiated, intravenous access is established, and the monitor exhibits the displayed rhythm (as shown below). Despite these steps, a 12-Lead ECG does not reveal any ST elevation. <br/><br/>What action should be taken as the next intervention?
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✓ Correct answer: Administer atropine 0.5 mg IV
In this scenario, the patient presents with symptoms of fatigue, difficulty breathing during physical activity, and hemodynamic instability with a blood pressure reading of 80/42 and a heart rate of 49 beats per minute. The normal lung sounds and oxygen saturation level indicate that the issue is not primarily related to respiratory function.<br/><br/>The specific rhythm displayed on the cardiac monitor is not provided, but it is mentioned that there is no ST elevation on the 12-Lead ECG, which rules out acute myocardial infarction as the cause of the symptoms.<br/><br/>With a low blood pressure and bradycardia (slow heart rate), the most likely cause of the patient's symptoms is a symptomatic bradyarrhythmia. The most appropriate intervention for symptomatic bradycardia is the administration of atropine, which increases heart rate by inhibiting the effects of the vagus nerve on the heart.<br/><br/>Option B (Begin transcutaneous pacing) is incorrect because transcutaneous pacing is usually reserved for patients with complete heart block or other forms of bradyarrhythmias that do not respond to atropine or are temporarily unstable.<br/><br/>Option C (Start dopamine infusion) is incorrect because dopamine is a vasopressor agent that is typically used to increase blood pressure in hypotensive patients, but it does not directly increase heart rate.<br/><br/>Option D (Start epinephrine infusion) is incorrect because epinephrine is also a vasopressor agent that can increase blood pressure, but it does not specifically address the bradycardia.<br/><br/>In summary, the most appropriate intervention in this case would be to administer atropine 0.5 mg IV to increase the patient's heart rate and address the symptomatic bradycardia.
Q4During the treatment of symptomatic bradycardia in an adult patient, a second IV atropine dose of 1 mg is administered. However, the patient becomes unresponsive and stops breathing. Following this, 5 cycles of high-quality CPR and ventilations are provided, followed by a rhythm check. The monitor displays an unorganized rhythm lacking identifiable QRS complexes. A monophonic defibrillator is utilized to deliver an unsynchronized shock of 360 joules, and chest compressions are resumed. During the subsequent 2-minute rhythm check, the patient remains unconscious, and you observe the rhythm depicted below. <br/><br/>What is your initial action?
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✓ Correct answer: Check for a palpable pulse
When a patient's heart rhythm becomes unstable or stops, it is important to quickly assess their condition and take appropriate action. Option A, checking for a palpable pulse, is the correct response in this situation. By checking for a pulse, you can determine if the patient's heart is still beating and if they have a circulation.<br/><br/>Option B, preparing for immediate transcutaneous pacing, is not the correct response. Transcutaneous pacing is a procedure used to treat a slow heart rate or a heart block. In this scenario, there is no indication that the patient's heart rate is slow or that they have a heart block.<br/><br/>Option C, administering atropine 1 mg IVP (intravenous push), is also an incorrect response. Atropine is commonly used to treat symptomatic bradycardia, but in this scenario, there is no indication that the patient has a slow heart rate requiring atropine administration.<br/><br/>Option D, resuming chest compressions, is not the correct response either. Chest compressions are performed during cardiopulmonary resuscitation (CPR) when a patient does not have a palpable pulse. In this scenario, the correct first step is to assess for a palpable pulse before initiating chest compressions.<br/><br/>In conclusion, option A, checking for a palpable pulse, is the correct response to this situation. It is important to first determine if the patient has a pulse before proceeding with any further interventions or treatments.
Q5For transcutaneous pacing, it is recommended to adjust the demand rate at:
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✓ Correct answer: started at 60-80/min with adjustment based on clinical response
The initial demand rate should be established at 60/min, which can subsequently be adjusted higher or lower once pacing capture is achieved.<br/><br/>Option A suggests starting at 80/min with adjustment based on clinical response, which is incorrect. Starting at a higher rate may not be appropriate and can cause unnecessary discomfort or complications for the patient. <br/><br/>Option C suggests that the demand rate should not be higher than 60/min, which is also incorrect. While some patients may require a lower demand rate, it is not a blanket recommendation for all cases. <br/><br/>Option D suggests starting at 100/min and then reducing it to a minimum based on clinical response, which is also incorrect. Starting at a higher rate and then reducing it may not be the most appropriate approach and can lead to potential complications.
Q6(True or False)<br/><br/>PEA and Asystole are both rhythms that can be treated with electrical shock.
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✓ Correct answer: False
PEA (Pulseless Electrical Activity) and Asystole are both rhythms that are considered to be cardiac arrest rhythms. However, they cannot be treated with electrical shock. <br/><br/>Option B (True): This answer choice is incorrect. PEA and asystole cannot be treated with electrical shock, so the statement is false.
Q7Which of the following conditions does not warrant the use of transcutaneous pacing?
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✓ Correct answer: asystole
Transcutaneous pacing is a medical procedure that involves the use of electrical stimulation to pace the heart and correct abnormal heart rhythms. However, it is not appropriate to use transcutaneous pacing in all situations.<br/><br/>Option B) 2nd degree block type II<br/>Second-degree heart block type II is a condition in which some electrical signals from the heart's upper chambers (atria) fail to reach the lower chambers (ventricles). Transcutaneous pacing is a suitable treatment option for this condition because it can help regulate the heart rate and restore proper electrical conduction.<br/><br/>Option C) complete block<br/>Complete heart block, also known as third-degree heart block, is a condition in which no electrical signals from the atria reach the ventricles. Transcutaneous pacing is a suitable treatment option for this condition because it can provide the necessary electrical stimulation to maintain an appropriate heart rate.<br/><br/>Option D) both 1 and 2<br/>This option incorrectly suggests that both asystole and second-degree block type II do not warrant the use of transcutaneous pacing. Asystole, which refers to the absence of any electrical activity in the heart, is a condition that does not respond well to transcutaneous pacing. Instead, advanced cardiac life support measures, such as cardiopulmonary resuscitation (CPR) and administration of medications, are necessary for managing asystole.<br/><br/>In summary, asystole is the only condition listed that does not warrant the use of transcutaneous pacing.
Q8After initiating CPR and delivering one shock for ventricular fibrillation, the patient still shows signs of persistent fine ventricular fibrillation (VF). In order to address this situation, a second shock is administered promptly, and chest compressions are immediately resumed. Additionally, an intravenous line is already established, and no medication has been administered thus far. The bag-mask ventilations are momentarily stopped to safely insert an esophageal tracheal tube, which results in noticeable chest rise and equal breath sounds heard throughout all lung fields.<br/><br/>What is your next step in the management of this patient?
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✓ Correct answer: Confirm the placement of the advanced airway with waveform capnography device
After delivering a second shock and resuming chest compressions, the next step in the management of this patient is to confirm the placement of the advanced airway with a waveform capnography device. This is important because it allows for the continuous monitoring of exhaled carbon dioxide (CO2) levels, which serves as an objective confirmation of correct endotracheal tube placement. <br/><br/>Option B (Confirm the advanced airway by listening for the absence of air sounds over the epigastrum) is incorrect. While it is important to confirm tube placement, listening for the absence of air sounds over the epigastrum is not a reliable method. Gastric inflation can produce misleading sounds, and relying on this method alone can lead to errors in airway management.<br/><br/>Option C (Administer IV epinephrine 1 mg (1:10,000) followed by a 20 mL saline flush) is also incorrect. At this point, the priority is to ensure proper airway management, rather than administering medication. While epinephrine is an important drug in the management of cardiac arrest, confirming the airway takes precedence in this situation.<br/><br/>Option D (Monitor CPR quality and provide ventilation uncoordinated with compression at a rate of 10/min) is incorrect as well. High-quality CPR with coordinated compressions and ventilations at an adequate rate is crucial in the management of cardiac arrest. Ventilations should be synchronized with compressions, and a rate of 10/min is too low. This option does not address the need to confirm the advanced airway placement.<br/><br/>In summary, confirming the placement of the advanced airway with a waveform capnography device is the next step in the management of this patient. This allows for continuous monitoring of exhaled CO2 levels, providing objective confirmation of correct endotracheal tube placement.
Q9Which of the following statements about catecholamine sensitive polymorphic ventricular tachycardia (CPVT) is false?
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✓ Correct answer: Treatment of choice is beta blocker and ICD.
Catecholamine sensitive polymorphic ventricular tachycardia (CPVT) is a genetic disorder that affects the heart's electrical system. It is caused by mutations in genes that control calcium channels in the heart muscle cells, not the ryanodine receptor as mentioned in option A. These mutations disrupt the normal regulation of calcium, leading to abnormal heart rhythms.<br/><br/>Option B states that bidirectional ventricular tachycardia is not seen in CPVT. This is incorrect. In fact, bidirectional ventricular tachycardia is a characteristic feature of CPVT. It is characterized by alternating directions of ventricular beats on an electrocardiogram (ECG).<br/><br/>Option C states that exercise is not associated with sudden cardiac death in CPVT. This is also incorrect. Exercise or emotional stress can trigger ventricular arrhythmias in individuals with CPVT, and it is a significant cause of sudden cardiac death in affected individuals.<br/><br/>The correct treatment for CPVT involves a combination of beta blockers and implantable cardioverter-defibrillator (ICD) therapy. Beta blockers help to prevent the excessive release of catecholamines (stress hormones) during physical or emotional stress, reducing the risk of arrhythmias. ICDs are implanted devices that can deliver electrical shocks to restore normal heart rhythm if a life-threatening arrhythmia occurs.<br/><br/>Therefore, option D is the incorrect statement as it misrepresents the recommended treatment for CPVT.
Q10While attending to a patient in cardiac arrest, effective and high-quality chest compressions are being administered. The patient has been intubated, and an IV has been established in the right antecubital space.<br/><br/>After the initial uncoordinated electrical activity rhythm without identifiable QRS complexes or P waves, a shock is administered, followed by 2 minutes of CPR. During the subsequent rhythm assessment, the monitor displays the following rhythm (as depicted below). If the patient continues to remain unresponsive and a palpable pulse is detected at a rate of 180/min, what should be the next medication and dosage administered?<br/><br/>What is the subsequent drug and dose to be provided if the patient remains unconscious and maintains a palpable pulse at a rate of 180/min?
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✓ Correct answer: Adenosine 6 mg IV
Adenosine is the appropriate medication to administer next because the patient's heart rhythm is displaying a wide complex tachycardia, which suggests a possible supraventricular tachycardia or ventricular tachycardia. Adenosine is a medication that can help diagnose and treat supraventricular tachycardias by temporarily stopping the heart and allowing it to restart in a normal rhythm. The initial dose of adenosine is 6 mg, followed by a rapid flush of normal saline. If there is no response to the initial dose, a second dose of 12 mg may be given.<br/><br/>Option A (Atropine 0.5 mg IV) is the wrong answer because atropine is typically used for symptomatic bradycardia, not for unstable tachycardias. Atropine works by blocking the action of the vagus nerve and increasing heart rate, which can be beneficial in cases of bradycardia.<br/><br/>Option C (Epinephrine 1 mg IV) is also an incorrect answer because epinephrine is indicated for cardiac arrest with pulselessness, not for managing unstable tachycardias. Epinephrine is a vasoconstrictor that helps increase blood flow to vital organs during cardiopulmonary resuscitation.<br/><br/>Option D (Amiodarone 300 mg IV) is not the appropriate choice in this scenario either. Amiodarone is commonly used for ventricular fibrillation and pulseless ventricular tachycardia, not for managing stable tachycardias with a pulse. It works by stabilizing the electrical activity of the heart and controlling abnormal rhythms.<br/><br/>In summary, the appropriate medication and dosage to administer next for a patient with an unconscious state and a pulse rate of 180 beats per minute, displaying the described heart rhythm, is B) Adenosine 6 mg IV.
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