Differentiation between supraventricular and ventricular rhythm is made on the basis of the
A. Duration (width) of the QRS complex and the presence or absence of P waves.
B. Appearance of the ST segment.
C. Amplitude of the U wave.
D. Duration of the PR interval.
Abnormally tall and peaked T waves suggest which of the following?
A. Hyperkalemia.
B. Acutepericarditis.
C. Acute MI.
D. Hypokalemia.
Which of the following conditions can prolong the QT interval?
A. Hypokalemia and hypercalcemia.
B. Hyperkalemia and hypercalcemia.
C. Hypocalcemia and hypokalemia.
D. Hypocalcemia and hyperkalemia.
In the ECG strip shown below, which arrhythmia is indicated?
A. Atrial flutter.
B. Atrial fibrillation.
C. Prematureatrial contractions.
D. Atrial tachycardia.
Subendocardial ischemia usually produces
A. ST-segment elevation.
B. ST -segment depression.
C. Q waves.
D. U waves.
In the ECG strip shown below, which arrhythmia is present?
A. Premature ventricular contractions.
B. Ventricular tachycardia.
C. Ventriculartrigeminy.
D. Ventricularbigeminy. (From Goldberger AL: Clinical Electrocardiography: A Simplified Approach, 6th ed. 51. Louis, Mosby, 1999, p 167.)
In the ECG strip shown below, what disorder is indicated?
A. Subendocardial ischemia.
B. Transmural ischemia.
C. Acute inferior MI.
D. Posterior MI (From Goldberger AL: Clinical Electrocardiography: A Simplified Approach, 6th ed. St. Louis, Mosby, 1999,p91.)
In the ECG strip shown below, what abnormality is indicated?
A. LBBB.
B. Posterior wall MI.
C. RBBB.
D. LVH. (From Goldberger AL: Clinical Electrocardiography: A Simplified Approach, 6th ed. St. Louis, Mosby, 1999, p 70.)
What condition can cause ST-segment elevation?
A. Digitalis toxicity.
B. Hypocalcemia.
C. Hypokalemia.
D. Acutepericarditis.
In the ECG strip shown below, what disorder is indicated?
A. Acutepericarditis.
B. Inferior MI.
C. Posterior MI.
D. Anterior MI. (From Goldberger AL: Clinical Electrocardiography: A Simplified Approach, 6th ed. St. Louis, Mosby, 1999, p 91.)
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