ECG WORKOUT
EXERCISES IN ARRHYTHMIA
INTERPRETATION
8TH EDITION
• AUTHOR(S)JANE HUFF
TEST BANK
1
Reference
Ch. One — Anatomy and Physiology of the Heart — Description
and Location of the Heart
Stem
A patient complains of chest pain after blunt trauma to the left
anterior chest. Which surface of the heart is most likely injured
,by direct anterior impact and why? Use cardiac position and
surface relationships to decide.
A. Diaphragmatic (inferior) surface
B. Sternocostal (anterior) surface
C. Pulmonary (left) surface
D. Base (posterior) surface
Correct Answer
B
Rationale — Correct (B)
The sternocostal (anterior) surface faces the anterior chest wall
and ribs; blunt anterior trauma first affects this surface (right
ventricle predominance).
Rationale — Incorrect
A. Diaphragmatic surface lies inferior against the diaphragm;
less exposed anteriorly.
C. Pulmonary (left) surface faces the left lung/lateral chest, not
the anterior midline.
D. Base/posterior surface is posterior toward the vertebrae;
unlikely injured by direct anterior force.
Teaching Point
Anterior chest trauma most often impacts the sternocostal
surface (RV-dominant).
Citation
Huff, J. (2022). ECG Workout: Exercises in Arrhythmia
Interpretation (8th ed.). Ch. 1.
,2
Reference
Ch. One — Anatomy and Physiology of the Heart — Apex and
Surfaces
Stem
A nurse is locating the cardiac apex for point-of-care ultrasound.
At which anatomical landmark should the probe be placed to
visualize the left ventricular apex?
A. Right 2nd intercostal space, parasternal line
B. Left 5th intercostal space, midclavicular line
C. Left 3rd intercostal space, midaxillary line
D. Xiphoid process, midline
Correct Answer
B
Rationale — Correct (B)
The cardiac apex normally lies near the left 5th intercostal space
at the midclavicular line, corresponding to the left ventricular
apex.
Rationale — Incorrect
A. Right 2nd intercostal parasternal is near aortic area, not
apex.
C. Left 3rd intercostal midaxillary is too superior and lateral.
D. Xiphoid is inferior and midline, near RV/IVC region, not apex.
, Teaching Point
Apex palpation: left 5th intercostal space at the midclavicular
line (LV apex).
Citation
Huff, J. (2022). ECG Workout: Exercises in Arrhythmia
Interpretation (8th ed.). Ch. 1.
3
Reference
Ch. One — Anatomy and Physiology of the Heart — Structure of
the Heart Wall
Stem
During assessment, a patient’s myocardium is described as
hypertrophied due to chronic pressure overload. Which heart
wall layer is primarily responsible for forceful contraction and
becomes thicker with hypertrophy?
A. Epicardium
B. Endocardium
C. Myocardium
D. Pericardial sac
Correct Answer
C
Rationale — Correct (C)
The myocardium is the muscular layer containing
EXERCISES IN ARRHYTHMIA
INTERPRETATION
8TH EDITION
• AUTHOR(S)JANE HUFF
TEST BANK
1
Reference
Ch. One — Anatomy and Physiology of the Heart — Description
and Location of the Heart
Stem
A patient complains of chest pain after blunt trauma to the left
anterior chest. Which surface of the heart is most likely injured
,by direct anterior impact and why? Use cardiac position and
surface relationships to decide.
A. Diaphragmatic (inferior) surface
B. Sternocostal (anterior) surface
C. Pulmonary (left) surface
D. Base (posterior) surface
Correct Answer
B
Rationale — Correct (B)
The sternocostal (anterior) surface faces the anterior chest wall
and ribs; blunt anterior trauma first affects this surface (right
ventricle predominance).
Rationale — Incorrect
A. Diaphragmatic surface lies inferior against the diaphragm;
less exposed anteriorly.
C. Pulmonary (left) surface faces the left lung/lateral chest, not
the anterior midline.
D. Base/posterior surface is posterior toward the vertebrae;
unlikely injured by direct anterior force.
Teaching Point
Anterior chest trauma most often impacts the sternocostal
surface (RV-dominant).
Citation
Huff, J. (2022). ECG Workout: Exercises in Arrhythmia
Interpretation (8th ed.). Ch. 1.
,2
Reference
Ch. One — Anatomy and Physiology of the Heart — Apex and
Surfaces
Stem
A nurse is locating the cardiac apex for point-of-care ultrasound.
At which anatomical landmark should the probe be placed to
visualize the left ventricular apex?
A. Right 2nd intercostal space, parasternal line
B. Left 5th intercostal space, midclavicular line
C. Left 3rd intercostal space, midaxillary line
D. Xiphoid process, midline
Correct Answer
B
Rationale — Correct (B)
The cardiac apex normally lies near the left 5th intercostal space
at the midclavicular line, corresponding to the left ventricular
apex.
Rationale — Incorrect
A. Right 2nd intercostal parasternal is near aortic area, not
apex.
C. Left 3rd intercostal midaxillary is too superior and lateral.
D. Xiphoid is inferior and midline, near RV/IVC region, not apex.
, Teaching Point
Apex palpation: left 5th intercostal space at the midclavicular
line (LV apex).
Citation
Huff, J. (2022). ECG Workout: Exercises in Arrhythmia
Interpretation (8th ed.). Ch. 1.
3
Reference
Ch. One — Anatomy and Physiology of the Heart — Structure of
the Heart Wall
Stem
During assessment, a patient’s myocardium is described as
hypertrophied due to chronic pressure overload. Which heart
wall layer is primarily responsible for forceful contraction and
becomes thicker with hypertrophy?
A. Epicardium
B. Endocardium
C. Myocardium
D. Pericardial sac
Correct Answer
C
Rationale — Correct (C)
The myocardium is the muscular layer containing
