Q. For the normal heartbeat, depolarization stimulus originates in
(a) His-bundle areas
(b) Epicardium
(c) Sinoatrial (SA)node
(d) Atrioventricular (AV) node
Answer: :: (c)
Q. The characteristics – slurring of the initial QRS deflection, shortened PR interval, and prolonged QRS duration are of this condition
(a) Atrial tachycardia
(b) Left bundle branch block
(c) WPW (Wolff-Parkinson-White) syndrome
(d) Myocardial ischemia
Answer: :: (c)
Q. P wave indicates
(a) Depolarization of right ventricle
(b) Depolarization of left ventricle
(c) Depolarization of both atria
(d) Atria to ventricular conduction time
Answer: :: (c)
Q. Ventricular muscle depolarization is indicated by
(a) PR interval
(b) P wave
(c) U wave
(d) The QRS complex
Answer: :: (d)
Q. ECG identified by the PR interval tends to become longer with every succeeding ECG complex until there is a P wave not followed by a QRS is observed in
(a) Third-Degree Atrioventricular Block
(B) Second-Degree Atrioventricular Block, Type II
(C) Second-Degree Atrioventricular Block, Type I
(D) First-Degree Atrioventricular Block, Type II
Answer: :: (c)
Q. ECG (Electrocardiogram) was developed first by
(a) Wilhelm His
(b) Steward
(c) Hubert Mann
(d) Willem Einthoven
Answer: :: (d)
Q. This is the classic ECG change in MI (myocardial infarction)
(a) ST-segment elevation
(b) T-wave inversion
(c) Development of an abnormal Q wave
(d) All of these
Answer: :: (d)
Q. In which of these conditions can widen QRS and Tall-tented T waves be observed?
(a) Hyponatremia
(b) Hyperkalemia
(c) Hyperglycemia
(d) Hyperphosphatemia
Answer: :: (b)
Q. Hypokalemia is the condition of low potassium levels in your blood. Hypokalemia ECG changes are observed by
(a) ST segment elevation
(b) U wave (a position deflection after the T wave)
(c) Tall peaked T waves
(d) Widening of the QRS complex and increased amplitude
Answer: :: (b)
Q. A normal ECG report must consist of the following information
(a) Rhythm, cardiac axis
(b) Conduction intervals
(c) Description of the ST segments, QRS complexes, T-waves
(d) All of these
Answer: :: (d)