Clinical Pathophysiology Made Ridiculously
Simple: Color Edition
3rd Edition
Author(s)Aaron Berkowitz MD PhD
TEST BANK
1
Reference: Berkowitz, 2023, Ch. 1: Anatomical Overview —
Coronary Perfusion
Question Stem: A 72-year-old man with new exertional chest
pain is tachycardic (HR 120). As the nurse suspects myocardial
ischemia, which physiologic change best explains ischemia
during tachycardia?
A. Reduced systolic ejection time decreases coronary perfusion
B. Shortened diastole reduces coronary perfusion.
C. Increased contractility reduces oxygen extraction.
D. Increased aortic pressure decreases coronary blood flow.
Correct Answer: B
Rationales:
, • Correct (B): Coronary perfusion to the left ventricle
primarily occurs during diastole; tachycardia shortens
diastole and thus reduces coronary perfusion time,
precipitating ischemia. This matches Berkowitz’s discussion
of coronary flow dependence on diastolic time.
• Incorrect (A): Systolic ejection time is less relevant because
coronary flow to LV myocardium is minimal in systole.
• Incorrect (C): Increased contractility raises myocardial
oxygen demand but does not directly reduce coronary
perfusion time.
• Incorrect (D): Higher aortic pressure can increase coronary
driving pressure, not reduce flow, unless accompanied by
reduced diastolic time.
Teaching Point: Coronary perfusion to the left ventricle occurs
mainly during diastole.
Citation: Berkowitz, 2023, Ch. 1: Anatomical Overview
2
Reference: Berkowitz, 2023, Ch. 1: Left Heart Failure
Question Stem: A patient with long-standing hypertension
develops orthopnea and pink frothy sputum. Which mechanism
best explains these pulmonary symptoms?
A. Left atrial infarction causing bronchospasm
B. Elevated left ventricular end-diastolic pressure raising
,pulmonary capillary hydrostatic pressure
C. Systemic venous hypertension causing transudation into
alveoli
D. Loss of alveolar surfactant due to hypoperfusion
Correct Answer: B
Rationales:
• Correct (B): In left-sided heart failure, elevated LVEDP
transmits backward to the left atrium and pulmonary
capillaries, increasing hydrostatic pressure and causing
pulmonary edema (pink frothy sputum, orthopnea).
Berkowitz emphasizes backward failure and hydrostatic
pulmonary edema.
• Incorrect (A): Left atrial infarction is uncommon and
bronchospasm does not explain frothy sputum.
• Incorrect (C): Systemic venous hypertension is a feature of
right HF, not the primary cause of pulmonary edema.
• Incorrect (D): Surfactant loss from hypoperfusion is not the
principal mechanism for acute cardiogenic pulmonary
edema.
Teaching Point: Elevated LV filling pressure causes pulmonary
edema via increased pulmonary capillary hydrostatic pressure.
Citation: Berkowitz, 2023, Ch. 1: Left Heart Failure
3
, Reference: Berkowitz, 2023, Ch. 1: Right Heart Failure /
Symptoms and Signs of Heart Failure
Question Stem: A patient with chronic COPD develops
worsening peripheral edema and prominent jugular venous
distention (JVD). Which finding best differentiates right heart
failure from isolated liver disease causing edema?
A. New bibasilar crackles on lung auscultation
B. Positive hepatojugular reflux and elevated JVD
C. Elevated serum bilirubin with low albumin
D. Warm, erythematous lower extremities
Correct Answer: B
Rationales:
• Correct (B): Right HF causes systemic venous congestion
manifested by elevated JVP and a positive hepatojugular
reflux; these findings support cardiac right-sided failure
rather than primary hepatic synthetic dysfunction.
Berkowitz highlights systemic venous congestion signs as
hallmark of right HF.
• Incorrect (A): Bibasilar crackles indicate pulmonary
congestion (left HF), not specific to right HF vs liver
disease.
• Incorrect (C): Elevated bilirubin/low albumin indicate
hepatic dysfunction rather than venous congestion signs.
• Incorrect (D): Warm, erythematous legs suggest cellulitis
or inflammation, not venous congestion.
Simple: Color Edition
3rd Edition
Author(s)Aaron Berkowitz MD PhD
TEST BANK
1
Reference: Berkowitz, 2023, Ch. 1: Anatomical Overview —
Coronary Perfusion
Question Stem: A 72-year-old man with new exertional chest
pain is tachycardic (HR 120). As the nurse suspects myocardial
ischemia, which physiologic change best explains ischemia
during tachycardia?
A. Reduced systolic ejection time decreases coronary perfusion
B. Shortened diastole reduces coronary perfusion.
C. Increased contractility reduces oxygen extraction.
D. Increased aortic pressure decreases coronary blood flow.
Correct Answer: B
Rationales:
, • Correct (B): Coronary perfusion to the left ventricle
primarily occurs during diastole; tachycardia shortens
diastole and thus reduces coronary perfusion time,
precipitating ischemia. This matches Berkowitz’s discussion
of coronary flow dependence on diastolic time.
• Incorrect (A): Systolic ejection time is less relevant because
coronary flow to LV myocardium is minimal in systole.
• Incorrect (C): Increased contractility raises myocardial
oxygen demand but does not directly reduce coronary
perfusion time.
• Incorrect (D): Higher aortic pressure can increase coronary
driving pressure, not reduce flow, unless accompanied by
reduced diastolic time.
Teaching Point: Coronary perfusion to the left ventricle occurs
mainly during diastole.
Citation: Berkowitz, 2023, Ch. 1: Anatomical Overview
2
Reference: Berkowitz, 2023, Ch. 1: Left Heart Failure
Question Stem: A patient with long-standing hypertension
develops orthopnea and pink frothy sputum. Which mechanism
best explains these pulmonary symptoms?
A. Left atrial infarction causing bronchospasm
B. Elevated left ventricular end-diastolic pressure raising
,pulmonary capillary hydrostatic pressure
C. Systemic venous hypertension causing transudation into
alveoli
D. Loss of alveolar surfactant due to hypoperfusion
Correct Answer: B
Rationales:
• Correct (B): In left-sided heart failure, elevated LVEDP
transmits backward to the left atrium and pulmonary
capillaries, increasing hydrostatic pressure and causing
pulmonary edema (pink frothy sputum, orthopnea).
Berkowitz emphasizes backward failure and hydrostatic
pulmonary edema.
• Incorrect (A): Left atrial infarction is uncommon and
bronchospasm does not explain frothy sputum.
• Incorrect (C): Systemic venous hypertension is a feature of
right HF, not the primary cause of pulmonary edema.
• Incorrect (D): Surfactant loss from hypoperfusion is not the
principal mechanism for acute cardiogenic pulmonary
edema.
Teaching Point: Elevated LV filling pressure causes pulmonary
edema via increased pulmonary capillary hydrostatic pressure.
Citation: Berkowitz, 2023, Ch. 1: Left Heart Failure
3
, Reference: Berkowitz, 2023, Ch. 1: Right Heart Failure /
Symptoms and Signs of Heart Failure
Question Stem: A patient with chronic COPD develops
worsening peripheral edema and prominent jugular venous
distention (JVD). Which finding best differentiates right heart
failure from isolated liver disease causing edema?
A. New bibasilar crackles on lung auscultation
B. Positive hepatojugular reflux and elevated JVD
C. Elevated serum bilirubin with low albumin
D. Warm, erythematous lower extremities
Correct Answer: B
Rationales:
• Correct (B): Right HF causes systemic venous congestion
manifested by elevated JVP and a positive hepatojugular
reflux; these findings support cardiac right-sided failure
rather than primary hepatic synthetic dysfunction.
Berkowitz highlights systemic venous congestion signs as
hallmark of right HF.
• Incorrect (A): Bibasilar crackles indicate pulmonary
congestion (left HF), not specific to right HF vs liver
disease.
• Incorrect (C): Elevated bilirubin/low albumin indicate
hepatic dysfunction rather than venous congestion signs.
• Incorrect (D): Warm, erythematous legs suggest cellulitis
or inflammation, not venous congestion.
