Pathophysiology, Physical Assessment, and
Pharmacology
SECTION 1: PATHOPHYSIOLOGY
Question 1
A 55-year-old male presents with substernal chest pressure radiating to the left arm,
precipitated by exertion and relieved by rest. Which pathophysiologic mechanism
best explains his symptoms?
A) Fixed coronary artery obstruction with inadequate blood flow during increased
demand
B) Transient coronary artery vasospasm
C) Rupture of an atherosclerotic plaque with thrombus formation
D) Microvascular dysfunction without epicardial obstruction
Answer: A
Rationale: Stable angina is caused by fixed coronary artery obstruction
(atherosclerosis) that limits blood flow during increased myocardial oxygen demand
(exertion, stress). The pain is relieved by rest when demand decreases. Option B
describes Prinzmetal/variant angina, C describes acute coronary syndrome/MI, and D
describes cardiac syndrome X .
Question 2
A patient with chronic heart failure presents with worsening dyspnea, jugular venous
distension, and lower extremity edema. Which pathophysiologic mechanism is most
directly responsible for these findings?
A) Decreased cardiac output leading to renal hypoperfusion
B) Increased left ventricular end-diastolic pressure causing backward failure
,C) Reduced renal perfusion pressure activating the RAAS system
D) Increased systemic vascular resistance from compensatory vasoconstriction
Answer: B
Rationale: In chronic heart failure, reduced cardiac output leads to compensatory
fluid retention and increased filling pressures. Elevated left ventricular end-diastolic
pressure transmits backward into the left atrium and pulmonary circulation,
eventually causing systemic venous congestion as evidenced by JVD and peripheral
edema .
Question 3
What is the most common chronic condition seen in primary care settings?
A) Elevated blood pressure
B) Renal disease
C) Cardiovascular disease
D) Chronic kidney disease
Answer: A
Rationale: Elevated blood pressure (hypertension) is the most common chronic
condition seen in primary care settings. Hypertension can lead to more serious
conditions such as cardiovascular disease, renal disease, and, if left untreated,
possible death .
Question 4
According to the American Heart Association (AHA), what is the normal level for
blood pressure?
,A) 130/90 mmHg
B) 120/80 mmHg
C) 140/90 mmHg
D) 150/90 mmHg
Answer: B
Rationale: According to the AHA, normal blood pressure readings for systolic and
diastolic is 120/80 mmHg. Essential hypertension is classified as greater than 140/90.
Genetics, environment, and aging all have effects on essential hypertension .
Question 5
What is the definition of blood pressure?
A) Contraction of the heart
B) Elevated blood pressure
C) Force exerted against arterial walls by blood as it circulates through the body
D) No contraction of the heart
Answer: C
Rationale: Blood pressure is the force exerted against arterial walls by blood as it
circulates through the body. Systolic pressure is the force or contraction of the heart.
Diastole is the pressure in the arteries when the heart fills and rests between beats .
Question 6
A patient with a 40-pack-year smoking history presents with complaints of bilateral
calf pain when walking approximately one block. The pain resolves with rest. Which
pathophysiologic mechanism is most likely responsible?
, A) Venous stasis causing tissue edema
B) Atherosclerotic plaque formation leading to arterial lumen narrowing
C) Autoimmune inflammation of small vessel walls
D) Neurogenic compression of spinal nerve roots
Answer: B
Rationale: Intermittent claudication is the hallmark symptom of peripheral arterial
disease (PAD). The pathophysiology involves atherosclerosis causing progressive
narrowing of arterial lumens in the lower extremities. During exercise, increased
oxygen demand cannot be met due to limited blood flow, resulting in ischemic
muscle pain that resolves with rest .
Question 7
What is the proper formula for cardiac output?
A) CO = BP/PVR
B) CO × SV
C) CO = SV × HR
D) CO × SV × HR
Answer: C
Rationale: Blood pressure is dependent upon many factors such as cardiac output
and peripheral vascular resistance (PVR). The correct formula for cardiac output is CO
= SV × HR (stroke volume × heart rate). Cardiac output in a healthy adult is
approximately 5 liters/min .
Question 8
How many liters/min of blood are pumped by the heart in a healthy adult?
Pharmacology
SECTION 1: PATHOPHYSIOLOGY
Question 1
A 55-year-old male presents with substernal chest pressure radiating to the left arm,
precipitated by exertion and relieved by rest. Which pathophysiologic mechanism
best explains his symptoms?
A) Fixed coronary artery obstruction with inadequate blood flow during increased
demand
B) Transient coronary artery vasospasm
C) Rupture of an atherosclerotic plaque with thrombus formation
D) Microvascular dysfunction without epicardial obstruction
Answer: A
Rationale: Stable angina is caused by fixed coronary artery obstruction
(atherosclerosis) that limits blood flow during increased myocardial oxygen demand
(exertion, stress). The pain is relieved by rest when demand decreases. Option B
describes Prinzmetal/variant angina, C describes acute coronary syndrome/MI, and D
describes cardiac syndrome X .
Question 2
A patient with chronic heart failure presents with worsening dyspnea, jugular venous
distension, and lower extremity edema. Which pathophysiologic mechanism is most
directly responsible for these findings?
A) Decreased cardiac output leading to renal hypoperfusion
B) Increased left ventricular end-diastolic pressure causing backward failure
,C) Reduced renal perfusion pressure activating the RAAS system
D) Increased systemic vascular resistance from compensatory vasoconstriction
Answer: B
Rationale: In chronic heart failure, reduced cardiac output leads to compensatory
fluid retention and increased filling pressures. Elevated left ventricular end-diastolic
pressure transmits backward into the left atrium and pulmonary circulation,
eventually causing systemic venous congestion as evidenced by JVD and peripheral
edema .
Question 3
What is the most common chronic condition seen in primary care settings?
A) Elevated blood pressure
B) Renal disease
C) Cardiovascular disease
D) Chronic kidney disease
Answer: A
Rationale: Elevated blood pressure (hypertension) is the most common chronic
condition seen in primary care settings. Hypertension can lead to more serious
conditions such as cardiovascular disease, renal disease, and, if left untreated,
possible death .
Question 4
According to the American Heart Association (AHA), what is the normal level for
blood pressure?
,A) 130/90 mmHg
B) 120/80 mmHg
C) 140/90 mmHg
D) 150/90 mmHg
Answer: B
Rationale: According to the AHA, normal blood pressure readings for systolic and
diastolic is 120/80 mmHg. Essential hypertension is classified as greater than 140/90.
Genetics, environment, and aging all have effects on essential hypertension .
Question 5
What is the definition of blood pressure?
A) Contraction of the heart
B) Elevated blood pressure
C) Force exerted against arterial walls by blood as it circulates through the body
D) No contraction of the heart
Answer: C
Rationale: Blood pressure is the force exerted against arterial walls by blood as it
circulates through the body. Systolic pressure is the force or contraction of the heart.
Diastole is the pressure in the arteries when the heart fills and rests between beats .
Question 6
A patient with a 40-pack-year smoking history presents with complaints of bilateral
calf pain when walking approximately one block. The pain resolves with rest. Which
pathophysiologic mechanism is most likely responsible?
, A) Venous stasis causing tissue edema
B) Atherosclerotic plaque formation leading to arterial lumen narrowing
C) Autoimmune inflammation of small vessel walls
D) Neurogenic compression of spinal nerve roots
Answer: B
Rationale: Intermittent claudication is the hallmark symptom of peripheral arterial
disease (PAD). The pathophysiology involves atherosclerosis causing progressive
narrowing of arterial lumens in the lower extremities. During exercise, increased
oxygen demand cannot be met due to limited blood flow, resulting in ischemic
muscle pain that resolves with rest .
Question 7
What is the proper formula for cardiac output?
A) CO = BP/PVR
B) CO × SV
C) CO = SV × HR
D) CO × SV × HR
Answer: C
Rationale: Blood pressure is dependent upon many factors such as cardiac output
and peripheral vascular resistance (PVR). The correct formula for cardiac output is CO
= SV × HR (stroke volume × heart rate). Cardiac output in a healthy adult is
approximately 5 liters/min .
Question 8
How many liters/min of blood are pumped by the heart in a healthy adult?
