ACLS Tachycardia and Bradycardia Algorithms 2

Question 1

A patient has a heart rate of 160 bpm with a narrow QRS complex and is hemodynamically stable. What is the first-line treatment?

Accepted Answer

Vagal maneuvers

Answer

Immediate synchronized cardioversion

Answer

Adenosine 12 mg IV push

Answer

Amiodarone 150 mg IV over 10 minutes

Question 2

During the bradycardia algorithm, atropine fails to increase the heart rate. What is the next intervention?

Accepted Answer

Transcutaneous pacing or dopamine/epinephrine infusion

Answer

Repeat atropine 1 mg IV

Answer

Synchronized cardioversion

Answer

Adenosine 6 mg IV push

Question 3

A 58-year-old patient has a heart rate of 190 bpm with a wide QRS complex and is pulseless. What is the correct action?

Accepted Answer

Defibrillation and CPR per VF/pVT algorithm

Answer

Synchronized cardioversion at 120 J

Answer

Adenosine 6 mg IV push

Answer

Amiodarone 300 mg IV bolus

Question 4

Which of the following is NOT a sign of hemodynamic instability requiring immediate intervention in tachycardia?

Accepted Answer

Heart rate of 110 bpm at rest

Answer

Hypotension (BP < 90 mmHg)

Answer

Altered mental status

Answer

Acute pulmonary edema

Question 5

What is the maximum total dose of atropine recommended in the ACLS bradycardia algorithm?

Accepted Answer

3 mg

Answer

1 mg

Answer

2 mg

Answer

5 mg

Question 6

A patient presents with atrial fibrillation with rapid ventricular response at 145 bpm, BP 88/60. What is the most appropriate next step?

Accepted Answer

Synchronized cardioversion

Answer

Rate control with diltiazem IV

Answer

Anticoagulation with heparin

Answer

Rhythm control with oral flecainide

Question 7

Which energy setting is recommended for synchronized cardioversion of atrial flutter?

Accepted Answer

50–100 J

Answer

120–200 J

Answer

200 J

Answer

360 J