ECG quiz

1.      Clinical Scenario: A 60-year-old male presents to the emergency department with sudden-onset chest pain, diaphoresis, and shortness of breath. The ECG shows ST-segment elevation in leads II, III, and aVF. Which intervention should be initiated immediately?

• A) Administer nitroglycerin

• B) Begin high-flow oxygen therapy

• C) Perform immediate cardioversion

• D) Activate the catheterization laboratory

2.     A 45-year-old female collapses suddenly in a shopping mall. Bystander CPR is initiated, and an automated external defibrillator (AED) is applied, which advises a shock. After the shock, you should:

• A) Check for a pulse and breathing

• B) Resume CPR immediately

• C) Give 1 mg of intravenous epinephrine

• D) Administer 300 mg of amiodarone intravenously

3. 3. A 70-year-old male with a known history of congestive heart failure presents with acute pulmonary edema and respiratory distress. Initial management should include:

•  A) Administering loop diuretics

• B) Initiating synchronized cardioversion

• C) Administering inotropic agents

• D) Performing immediate endotracheal intubation

4. During resuscitation efforts for a patient in cardiac arrest, an advanced airway is placed. Which waveform capnography finding indicates effective chest compressions?

• A) Sustained end-tidal carbon dioxide (EtCO2) reading of 10 mmHg

•  B) Initial spike of EtCO2 followed by a gradual decline

• C) A flatline trace with no EtCO2 waveform

• D) Continuous high EtCO2 reading above 40 mmHg

5. A 55-year-old female presents with acute chest pain, diaphoresis, and elevated troponin levels. ECG shows ST-segment elevation in leads V1 to V4. What is the most appropriate immediate intervention?

• A) Administer aspirin and heparin

• B) Perform synchronized cardioversion

• C) Administer amiodarone

• D) Prepare for immediate coronary angiography

6. Clinical Scenario: A 35-year-old male with a history of Wolff-Parkinson-White (WPW) syndrome develops rapid, irregular palpitations. The patient is conscious and hemodynamically stable. What is the first-line treatment of choice?

•  A) Adenosine

• B) Synchronized cardioversion

•  C) Amiodarone

• D) Intravenous beta-blockers

7. Clinical Scenario: A 66-year-old male presents with a sudden loss of consciousness and pulseless ventricular tachycardia. What is the initial intervention?

•  A) Defibrillation with 200 J

• B) Administering 1 mg of intravenous epinephrine

•  C) Initiating immediate synchronized cardioversion

• D) Give ASA and clopidogrel

8. What is the most common cause of ventricular tachycardia?

• a) Hypertrophic cardiomyopathy

• b) Long QT syndrome

• c) Myocardial infarction

• d) Valvular heart disease

9. A 78-year-old male with a known history of atrial fibrillation presents with rapid, irregular palpitations, hypotension, and altered mental status. The initial management should include:

• A) Synchronized cardioversion

• B) Administration of intravenous adenosine

• C) Intravenous administration of beta-blockers

• D) Cardioversion with 200 J

10.  A 42-year-old male presents with acute ST-segment elevation myocardial infarction (STEMI). After confirming the diagnosis, what is the recommended time frame for initiating percutaneous coronary intervention (PCI)?

• A) Within 12 hours of symptom onset

•  B) Within 6 hours of symptom onset

• C) Within 2 hours of symptom onset

• D) Within 90 minutes of symptom onset