#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 does 'QT prolongation' suggest when observed on an ECG?
Risk of torsades de pointes
ExplanationQT prolongation on an ECG indicates an increased risk of torsades de pointes.
#9
Which artifact is caused by loose electrode connections or poor skin preparation?
Baseline wander
ExplanationBaseline wander is often caused by loose electrode connections or poor skin preparation on an ECG.
#10
What does the 'J point' represent on an ECG tracing?
End of the ST segment
ExplanationThe 'J point' marks the end of the ST segment on an ECG tracing.
#11
What does the term 'atrial escape rhythm' refer to on an ECG?
Rhythm originating from the atria during bradycardia
ExplanationThe 'atrial escape rhythm' refers to a rhythm originating from the atria during bradycardia on an ECG.
#12
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.
#13
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.
#14
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.
#15
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.
#16
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.
#17
What is a common cause of 'P pulmonale' on an ECG?
Right atrial enlargement
Explanation'P pulmonale' often results from right atrial enlargement on an ECG.
#18
Which of the following ECG abnormalities is commonly associated with hyperkalemia?
Peaked T waves
ExplanationPeaked T waves are frequently associated with hyperkalemia on an ECG.
#19
Which electrolyte abnormality is often associated with 'Osborn waves'?
Hyperkalemia
Explanation'Osborn waves' are often seen in cases of hyperkalemia on an ECG.
#20
What does 'P mitrale' suggest when observed on an ECG?
Left atrial enlargement
Explanation'P mitrale' typically suggests left atrial enlargement when observed on an ECG.
#21
Which ECG finding is typically seen in patients with pericarditis?
ST segment elevation in all leads
ExplanationST segment elevation in all leads is a characteristic finding in patients with pericarditis on an ECG.
#22
Which of the following conditions is associated with 'delta waves' on an ECG?
Wolff-Parkinson-White syndrome
Explanation'Delta waves' are associated with Wolff-Parkinson-White syndrome on an ECG.
#23
What is 'Junctional escape rhythm' as seen on an ECG?
Rhythm originating from the atrioventricular node during bradycardia
Explanation'Junctional escape rhythm' is a rhythm originating from the atrioventricular node during bradycardia on an ECG.
#24
Which of the following represents a common cause of 'QT interval prolongation'?
Hypokalemia
ExplanationHypokalemia is a common cause of 'QT interval prolongation' on an ECG.
#25
What does 'R on T phenomenon' suggest on an ECG?
Risk of ventricular fibrillation
ExplanationThe 'R on T phenomenon' suggests an increased risk of ventricular fibrillation on an ECG.