#1
Which of the following is a common cause of motion artifact in an ECG?
Patient movement
ExplanationECG interference often occurs due to the movement of the patient.
#2
What is the typical duration of a normal P wave in an ECG?
Less than 0.04 seconds
ExplanationA normal P wave usually lasts less than 0.04 seconds.
#3
Which ECG waveform represents ventricular depolarization?
QRS complex
ExplanationThe QRS complex signifies ventricular depolarization in an ECG.
#4
What does 'ST segment elevation' typically indicate on an ECG?
Myocardial infarction
ExplanationST segment elevation often suggests myocardial infarction.
#5
Which of the following artifacts is commonly caused by electrode poor contact or muscle contraction?
Somatic tremor
ExplanationPoor electrode contact or muscle contraction often leads to somatic tremor artifacts on an ECG.
#6
What is a common characteristic of the QRS complex in a normal ECG?
It typically has a duration of less than 0.12 seconds
ExplanationA normal QRS complex usually lasts less than 0.12 seconds.
#7
Which of the following is a typical characteristic of an artifact known as 'AC interference'?
Regular pattern with a frequency of 60 Hz
Explanation'AC interference' artifacts often exhibit a regular pattern with a frequency of 60 Hz.
#8
What is 'Torsades de pointes' as observed on an ECG?
Ventricular tachycardia
Explanation'Torsades de pointes' refers to a type of ventricular tachycardia seen on an ECG.
#9
Which of the following conditions is commonly associated with 'Osborn waves' on an ECG?
Hypothermia
Explanation'Osborn waves' are often observed in cases of hypothermia on an ECG.
#10
What is a potential cause of 'sawtooth pattern' on an ECG?
Atrial flutter
ExplanationA 'sawtooth pattern' on an ECG is commonly caused by atrial flutter.
#11
What is a common finding in 'Wolff-Parkinson-White syndrome' on an ECG?
Short PR interval
ExplanationA short PR interval is a typical finding in Wolff-Parkinson-White syndrome on an ECG.
#12
Which of the following represents an abnormal finding in the T wave morphology of an ECG?
Inverted T wave in leads V1-V3
ExplanationAn inverted T wave in leads V1-V3 is considered an abnormal finding in T wave morphology on an ECG.