ECG module 3 Flashcards
What is the main purpose of the ECG interpretation checklist described in the module?
A) To identify common ECG patterns at a glance.
B) To diagnose all ECG abnormalities quickly.
C) To ensure that abnormalities are not missed during ECG interpretation.
D) To skip the analysis of easy ECGs.
C) To ensure that abnormalities are not missed during ECG interpretation.
Which component of the ECG interpretation checklist involves determining the pacemaker responsible for the ECG tracing?
A) Determining the rhythm.
B) Tracing the route of depolarization.
C) P-wave analysis.
D) QRS complex analysis.
A) Determining the rhythm.
What is the normal range for the QRS rate when determining the rhythm in a 10-second ECG strip?
A) 30-60 beats/min
B) 60-100 beats/min
C) 100-120 beats/min
D) 120-150 beats/min
B) 60-100 beats/min
What does it mean when the QRS complexes are spaced regularly in an ECG strip?
A) The ECG is showing atrial fibrillation.
B) The ECG is showing a rhythm likely originating from a pacemaker.
C) The ECG is showing a completely irregular rhythm.
D) The ECG is displaying group beats.
B) The ECG is showing a rhythm likely originating from a pacemaker.
What is the normal width for QRS complexes in an ECG?
A) Less than 40 ms
B) Less than 60 ms
C) Less than 80 ms
D) Less than 120 ms
D) Less than 120 ms
When calculating the axis in an ECG tracing, what is the main lead used to determine the axis?
A) Lead I
B) Lead II
C) Lead III
D) Lead aVR
A) Lead I
In a normal sinus rhythm ECG, where should the P wave be upright?
A) Lead I
B) Lead II
C) Lead III
D) Lead aVR
B) Lead II
What is the primary purpose of analyzing the ST segment in ECG interpretation?
A) To identify the axis of the ECG.
B) To check for P-wave morphology.
C) To determine the rate of the QRS complexes.
D) To ensure it returns to the iso-electric line.
D) To ensure it returns to the iso-electric line.
What is the normal range for the PR interval duration in an ECG?
A) 20-60 ms
B) 60-100 ms
C) 100-200 ms
D) 200-300 ms
C) 100-200 ms
In which leads should T waves be mostly negative in a chest lead ECG?
A) V1 and V2
B) V3 and V4
C) V5 and V6
D) V7 and V8
A) V1 and V2
If an ECG shows ST elevation, what should you primarily consider?
A) Right bundle branch block
B) Left ventricular hypertrophy
C) Acute myocardial infarction
D) Atrial fibrillation
C) Acute myocardial infarction
Which of the following statements about the P-wave in ECG interpretation is correct?
A) P-wave must be positive in lead aVR.
B) P-wave is always biphasic in V1.
C) P-wave morphology is not important in diagnosis.
D) P-wave duration should not exceed 120 ms.
D) P-wave duration should not exceed 120 ms.
If the QT interval in an ECG is calculated to be 0.50 seconds and the preceding RR interval is 0.90 seconds, what should you conclude?
A) Normal QT interval
B) Prolonged QT interval
C) Shortened QT interval
D) Irregular rhythm
B) Prolonged QT interval
If an ECG shows a pattern of ST-segment elevation followed by T-wave inversion, what condition should be considered?
A) Ventricular tachycardia
B) Pericarditis
C) Atrial fibrillation
D) Supraventricular tachycardia
B) Pericarditis
In ECG analysis, what is the primary purpose of identifying R-wave progression?
A) Determining the axis of the heart
B) Assessing for atrial fibrillation
C) Identifying bundle branch blocks
D) Evaluating the progression of ventricular depolarization
D) Evaluating the progression of ventricular depolarization
