A patient has symptoms concerning for acute coronary syndrome, but the initial 12-lead ECG is normal or nondiagnostic. This ECG result rules out acute coronary syndrome.
8 Integrated ECG Case Practice Online Quiz Questions
Use this free practice quiz with 20 questions to review 8 Integrated ECG Case Practice, test your knowledge, and prepare for your next test or exam.
A patient becomes unresponsive and pulseless, and the monitor shows a chaotic, disorganized ventricular rhythm. What is the immediate treatment priority?
- A
Obtain a 12-lead ECG before starting treatment.
- B
Begin CPR and deliver unsynchronized defibrillation according to the cardiac-arrest algorithm.
- C
Perform synchronized cardioversion while checking for a pulse.
- D
Give adenosine before starting resuscitation.
A patient is alert with normal blood pressure and has a stable, regular narrow-complex tachycardia. Which initial rhythm-directed approach is reasonable?
- A
Proceed directly to unsynchronized defibrillation.
- B
Give adenosine regardless of whether the rhythm is regular.
- C
Assess and monitor; consider vagal maneuvers and adenosine if appropriate.
- D
Delay assessment until a 12-lead ECG confirms the rhythm.
A patient with an irregularly irregular narrow-complex tachycardia is confused and hypotensive, with a pulse. What is the immediate rhythm-management priority?
- A
Wait for laboratory results before treating the rhythm.
- B
Perform urgent synchronized cardioversion.
- C
Use unsynchronized defibrillation because the rhythm is irregular.
- D
Treat the ST depression as the only immediate priority.
Which actions belong in a systematic ECG review? Select all that apply.
- A
Confirm calibration and lead placement.
- B
Determine the rate and whether the rhythm is regular.
- C
Ignore ST–T changes if the rhythm is abnormal.
- D
Assess P waves and their relationship to QRS complexes, along with QRS width, axis, intervals, and ST–T changes.
Which findings are listed as signs of cardiopulmonary compromise when deciding whether a tachyarrhythmia is causing instability? Select all that apply.
- A
Hypotension
- B
A regular rhythm by itself
- C
Acute altered mental status
- D
Ischemic chest discomfort
When acute coronary syndrome is suspected, what is the target time from first medical contact for obtaining and interpreting a 12-lead ECG? Enter the value in minutes.
A patient has ongoing chest pain and horizontal ST depression in V1–V3 without diagnostic ST elevation on the standard tracing. Which posterior lead range should be considered to look for posterior injury?
In a patient with inferior ST elevation in leads II, III, and aVF, ST elevation in right-sided lead supports .
When first approaching a regular wide-complex tachycardia, treat it as potentially while obtaining expert help and assessing for ischemia or other causes.
According to the adult tachyarrhythmia algorithm described, what is the initial rapid IV push dose of adenosine for an appropriate regular rhythm? Enter the dose in milligrams.
A patient has persistent chest pressure, hypotension, ST elevation in II, III, and aVF, and ST elevation in V4R. What is the best immediate priority?
- A
Wait for troponin results before escalating care.
- B
Repeat the standard ECG later and defer activation unless blood pressure normalizes.
- C
Activate the STEMI or reperfusion pathway immediately and address hypotension while monitoring closely.
- D
Treat the right-sided lead finding as a reason to delay reperfusion assessment.
A patient has chest pressure and near-syncope, a heart rate of 34/min, blood pressure of 82/50 mm Hg, cool diaphoretic skin, and atrial activity dissociated from a slow, regular ventricular rhythm with broad QRS complexes. Identify the main rhythm concern and outline the immediate management priorities, including what to consider if initial treatment is ineffective.
A patient with sudden palpitations has a regular narrow-complex rhythm at 188/min, normal blood pressure, and no chest discomfort. Which initial rhythm-directed approach is appropriate?
- A
Monitor and assess; consider vagal maneuvers and, if appropriate under protocol, adenosine.
- B
Perform immediate unsynchronized defibrillation.
- C
Delay rhythm management until a 12-lead ECG shows visible P waves.
- D
Perform synchronized cardioversion immediately despite the absence of instability.
A patient is unresponsive and pulseless, and the monitor shows a chaotic, disorganized ventricular rhythm. The immediate pathway includes CPR and unsynchronized defibrillation.
- A
True
- B
False
A patient has ongoing chest pain and horizontal ST depression in V1–V3, without diagnostic ST elevation on the standard tracing. Which additional ECG step should be considered, and why?
- A
Obtain only a right-sided tracing because V1–V3 depression specifically identifies right-ventricular injury.
- B
Consider posterior leads V7–V9 because V1–V3 depression can be a clue to posterior injury.
- C
Repeat the standard tracing only after chest pain has resolved.
- D
Exclude acute coronary occlusion because the standard tracing has no diagnostic ST elevation.
A patient has an irregularly irregular narrow-complex rhythm, no consistent P waves, and a ventricular rate near 170/min. What rhythm diagnosis best describes this ECG finding?
A patient with possible acute coronary syndrome has ongoing chest discomfort, but the first 12-lead ECG is nondiagnostic. Which ECG approach is most appropriate?
- A
Wait for troponin results before obtaining an ECG.
- B
Obtain one ECG only if the rhythm is regular.
- C
Obtain and interpret a 12-lead promptly, targeting within 10 minutes, and repeat it if symptoms persist or the first tracing is nondiagnostic.
- D
Treat a normal or nondiagnostic first tracing as excluding acute coronary syndrome.
A patient has symptomatic bradycardia with hypotension and a concerning pattern for high-grade or complete AV block. Atropine has been ineffective. Which next approach is supported?
- A
Stop monitoring because the heart rate is the only relevant finding.
- B
Consider transcutaneous pacing and/or dopamine or epinephrine infusion, with expert consultation.
- C
Use unsynchronized defibrillation as the next routine step.
- D
Wait for the heart rate to normalize before addressing suspected ischemia.
A patient with a rapid, irregular narrow-complex rhythm has ST depression in several leads. The ST depression by itself proves that the cause is demand ischemia rather than concurrent acute coronary syndrome.
- A
True
- B
False