ECG Chest Leads and Cardiac Events Quiz
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Questions and Answers

Which wave on the ECG represents ventricular repolarization?

  • T wave (correct)
  • QRS complex
  • P wave
  • PR interval

    • What does the presence of pathological Q waves in leads V1-V6 indicate?

  • Acute inferior wall myocardial infarction
  • Acute anterolateral wall myocardial infarction (correct)
  • Normal ECG findings
  • Right atrial hypertrophy

    • What is the normal duration of the P wave on an ECG?

  • More than 0.12 seconds
  • Absent
  • Less than 0.12 seconds (correct)
  • 2.5 mm in height

    • Which wave on the ECG represents atrial depolarization?

    <p>P wave</p> Signup and view all the answers

    What does the ST segment on an ECG represent?

    <p>Pause in electrical activity before repolarization</p> Signup and view all the answers

    What does a tall R wave in lead V1 and a deep S wave in lead V6 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    Which interval on an ECG represents the total time for ventricular depolarization and repolarization?

    <p>QT interval</p> Signup and view all the answers

    What does a tall P wave in lead II indicate on an ECG?

    <p>Left atrial hypertrophy</p> Signup and view all the answers

    What does an R:S ratio greater than 1 in lead V1 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    What does the presence of ST segment elevation in leads III and aVF indicate on an ECG?

    <p>Acute inferior myocardial infarction</p> Signup and view all the answers

    What does a normal P wave duration and amplitude indicate on an ECG?

    <p>Normal atrial depolarization</p> Signup and view all the answers

    What does a R:S ratio greater than 1 in lead V1 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    Which lead should be used to analyze the rhythm strip on a 12 Lead ECG?

    <p>Lead II</p> Signup and view all the answers

    What does a deep S wave in lead V6 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    What does the presence of ST-T inversion in lead V1 indicate on an ECG?

    <p>Right ventricular infarction</p> Signup and view all the answers

    What does the presence of U waves on an ECG indicate?

    <p>Pause in electrical activity</p> Signup and view all the answers

    What does a normal QRS complex width indicate on an ECG?

    <p>Ventricular depolarization</p> Signup and view all the answers

    What does the presence of ST segment depression indicate on an ECG?

    <p>Ischemic heart disease</p> Signup and view all the answers

    What does the presence of P wave preceding all R waves indicate on an ECG?

    <p>Normal sinus rhythm</p> Signup and view all the answers

    What does the presence of ST segment depression indicate on an ECG?

    <p>Myocardial infarction</p> Signup and view all the answers

    What does a tall R wave in lead V1 and a deep S wave in lead V6 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    Which wave on the ECG represents atrial depolarization?

    <p>P wave</p> Signup and view all the answers

    What does a R:S ratio greater than 1 in lead V1 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    What does the presence of U waves on an ECG indicate?

    <p>Ventricular repolarization</p> Signup and view all the answers

    Which wave on the ECG represents ventricular depolarization?

    <p>QRS complex</p> Signup and view all the answers

    What does the presence of ST segment elevation in leads III and aVF indicate on an ECG?

    <p>Inferior wall MI</p> Signup and view all the answers

    What does a tall P wave in lead II indicate on an ECG?

    <p>LA hypertrophy</p> Signup and view all the answers

    Which wave on the ECG represents ventricular repolarization?

    <p>T wave</p> Signup and view all the answers

    What does a normal QRS complex width indicate on an ECG?

    <p>Ventricular depolarization</p> Signup and view all the answers

    What does the presence of ST segment elevation in leads I and aVL indicate on an ECG?

    <p>Anterior myocardial infarction</p> Signup and view all the answers

    What does the presence of ST segment elevation in leads I and aVL indicate on an ECG?

    <p>Anterolateral wall myocardial infarction</p> Signup and view all the answers

    What does a tall R wave in lead V1 and a deep S wave in lead V6 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    What does a normal P wave duration and amplitude indicate on an ECG?

    <p>Normal atrial depolarization</p> Signup and view all the answers

    Which wave on the ECG represents ventricular depolarization?

    <p>QRS complex</p> Signup and view all the answers

    What does the presence of U waves on an ECG indicate?

    <p>Abnormal electrolyte levels</p> Signup and view all the answers

    What does the presence of ST segment elevation in leads I and aVL indicate on an ECG?

    <p>Acute anterolateral wall myocardial infarction</p> Signup and view all the answers

    Which wave on the ECG represents atrial depolarization?

    <p>P wave</p> Signup and view all the answers

    What does a tall P wave in lead II indicate on an ECG?

    <p>Left atrial hypertrophy</p> Signup and view all the answers

    What does the presence of ST segment depression indicate on an ECG?

    <p>Ischemia</p> Signup and view all the answers

    Which wave on the ECG represents atrial depolarization?

    <p>P wave</p> Signup and view all the answers

    What does a tall P wave in lead II indicate on an ECG?

    <p>Left atrial hypertrophy</p> Signup and view all the answers

    What does the presence of ST-T inversion in lead V1 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

    Which wave on the ECG represents ventricular repolarization?

    <p>T wave</p> Signup and view all the answers

    What does the presence of ST segment depression indicate on an ECG?

    <p>Myocardial infarction</p> Signup and view all the answers

    What does a tall R wave in lead V1 and a deep S wave in lead V6 indicate on an ECG?

    <p>RVH</p> Signup and view all the answers

    Which wave on the ECG represents atrial depolarization?

    <p>P wave</p> Signup and view all the answers

    What does the presence of ST segment elevation in leads II and aVF indicate on an ECG?

    <p>Acute anterolateral wall MI</p> Signup and view all the answers

    What does a tall R wave in lead V1 and a deep S wave in lead V6 indicate on an ECG?

    <p>Right ventricular hypertrophy</p> Signup and view all the answers

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