ECG ORIENTATION KAISER 1 QUESTION SET
WITH RATIONALES AND ECG WAVEFORM
INTERPRETATION PRACTICE 2026
◉ Systole.
Answer: The contraction of the heart
◉ Willem Eithoven.
Answer: A dutch physiologist who developed techinques to record
the electrical activity of the heart in the late 1800s
◉ Normal Sinus Rhythm(NSR).
Answer: Regular heart rate of 60-80 bpm
◉ Sinus Bradycardia.
Answer: A heart rate below 60 bpm
◉ Sinus Tachycardia.
Answer: A heart rate above 100 bpm
◉ Polarization.
, Answer: The resting state of the myocardial wall, no electrical
activity
◉ Depolarization.
Answer: The elecrical system of the heart stimulates a myocardial
cell, resulting in the contraction of the stimulated heart muscle
◉ Repolarization.
Answer: The process of reaching the resting state before the heart
muscle cells can be electrically stimulated again
◉ P wave.
Answer: The first deflection=occurs during the contraction of the
atria
◉ PR segment.
Answer: return to baseline after atrial contraction
◉ QRS complex.
Answer: contraction of both ventricles
◉ ST segment.
WITH RATIONALES AND ECG WAVEFORM
INTERPRETATION PRACTICE 2026
◉ Systole.
Answer: The contraction of the heart
◉ Willem Eithoven.
Answer: A dutch physiologist who developed techinques to record
the electrical activity of the heart in the late 1800s
◉ Normal Sinus Rhythm(NSR).
Answer: Regular heart rate of 60-80 bpm
◉ Sinus Bradycardia.
Answer: A heart rate below 60 bpm
◉ Sinus Tachycardia.
Answer: A heart rate above 100 bpm
◉ Polarization.
, Answer: The resting state of the myocardial wall, no electrical
activity
◉ Depolarization.
Answer: The elecrical system of the heart stimulates a myocardial
cell, resulting in the contraction of the stimulated heart muscle
◉ Repolarization.
Answer: The process of reaching the resting state before the heart
muscle cells can be electrically stimulated again
◉ P wave.
Answer: The first deflection=occurs during the contraction of the
atria
◉ PR segment.
Answer: return to baseline after atrial contraction
◉ QRS complex.
Answer: contraction of both ventricles
◉ ST segment.