NSG530 Exam 2 V3 | NSG 530 Advanced
Pathophysiology | Wilkes University
This comprehensive exam-style resource is designed to prepare students for advanced
pathophysiology assessments related to cardiovascular dysfunction, pulmonary disease
progression, and hematologic abnormalities. The material emphasizes evidence-based disease
analysis and advanced clinical application.
The questions are structured to closely mirror actual course exams while reinforcing
prioritization, clinical reasoning, and advanced pathophysiological interpretation. Detailed
expert explanations support understanding and successful exam performance.
════════════════════════════════════
The Exam Covers:
• Dysrhythmias and cardiac dysfunction
• Myocardial infarction pathophysiology
• Respiratory failure mechanisms
• Pulmonary hypertension
• Clotting disorders and thrombosis
• Pathophysiology of shock states
• Advanced pulmonary assessment
• Oxygen transport abnormalities
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1. A patient presents with a ST-segment elevation myocardial infarction (STEMI). Which of
the following best describes the underlying pathophysiology?
A. Partial occlusion of a coronary artery leading to subendocardial ischemia.
B. Temporary vasospasm of the coronary arteries without permanent damage.
C. Complete occlusion of a major coronary artery resulting in transmural injury.
D. Gradual buildup of stable plaque leading to exertional chest pain.
Correct Answer: C
,Expert Explanation: In a STEMI, there is typically a complete and persistent occlusion of a
coronary artery, often due to a ruptured plaque and thrombus formation. This lack of blood
flow leads to transmural necrosis, meaning the full thickness of the myocardium is affected.
The characteristic ST-segment elevation on the EKG reflects this widespread electrical
injury to the heart muscle.
2. Which compensatory mechanism is most directly responsible for the increase in systemic
vascular resistance (SVR) seen in hypovolemic shock?
A. Activation of the renin-angiotensin-aldosterone system (RAAS)
B. Activation of the parasympathetic nervous system
C. Release of atrial natriuretic peptide (ANP)
D. Decreased production of antidiuretic hormone (ADH)
Correct Answer: A
Expert Explanation: In response to low blood volume, the kidneys release renin, which
eventually leads to the production of Angiotensin II. Angiotensin II is a potent
vasoconstrictor that increases systemic vascular resistance to help maintain blood
pressure. Additionally, this system triggers the release of aldosterone to retain sodium and
water, further attempting to expand plasma volume.
3. A patient with chronic obstructive pulmonary disease (COPD) develops pulmonary
hypertension. What is the primary pathophysiological driver of this condition?
A. Chronic alveolar hypoxia causing pulmonary vasoconstriction.
, B. Left ventricular failure leading to pulmonary venous congestion.
C. Increased cardiac output from chronic compensatory tachycardia.
D. Systemic hypertension spilling over into the pulmonary circulation.
Correct Answer: A
Expert Explanation: Chronic alveolar hypoxia in COPD patients triggers pulmonary artery
vasoconstriction as a mechanism to divert blood to better-ventilated areas. Over time, this
chronic vasoconstriction leads to structural remodeling and permanent narrowing of the
pulmonary vessels. The resulting increase in pulmonary vascular resistance manifests as
pulmonary hypertension and can eventually lead to right-sided heart failure (cor
pulmonale).
4. Disseminated intravascular coagulation (DIC) is characterized by which of the following
processes?
A. Localized clotting confined to the site of initial vascular injury.
B. An inherited deficiency in Factor VIII leading to spontaneous bleeding.
C. Systemic activation of coagulation followed by consumption of clotting factors.
D. Overproduction of platelets leading to arterial wall thickening.
Correct Answer: C
Expert Explanation: DIC involves the widespread, uncontrolled activation of the
coagulation cascade, leading to the formation of microthrombi throughout the vasculature.
Pathophysiology | Wilkes University
This comprehensive exam-style resource is designed to prepare students for advanced
pathophysiology assessments related to cardiovascular dysfunction, pulmonary disease
progression, and hematologic abnormalities. The material emphasizes evidence-based disease
analysis and advanced clinical application.
The questions are structured to closely mirror actual course exams while reinforcing
prioritization, clinical reasoning, and advanced pathophysiological interpretation. Detailed
expert explanations support understanding and successful exam performance.
════════════════════════════════════
The Exam Covers:
• Dysrhythmias and cardiac dysfunction
• Myocardial infarction pathophysiology
• Respiratory failure mechanisms
• Pulmonary hypertension
• Clotting disorders and thrombosis
• Pathophysiology of shock states
• Advanced pulmonary assessment
• Oxygen transport abnormalities
════════════════════════════════════
1. A patient presents with a ST-segment elevation myocardial infarction (STEMI). Which of
the following best describes the underlying pathophysiology?
A. Partial occlusion of a coronary artery leading to subendocardial ischemia.
B. Temporary vasospasm of the coronary arteries without permanent damage.
C. Complete occlusion of a major coronary artery resulting in transmural injury.
D. Gradual buildup of stable plaque leading to exertional chest pain.
Correct Answer: C
,Expert Explanation: In a STEMI, there is typically a complete and persistent occlusion of a
coronary artery, often due to a ruptured plaque and thrombus formation. This lack of blood
flow leads to transmural necrosis, meaning the full thickness of the myocardium is affected.
The characteristic ST-segment elevation on the EKG reflects this widespread electrical
injury to the heart muscle.
2. Which compensatory mechanism is most directly responsible for the increase in systemic
vascular resistance (SVR) seen in hypovolemic shock?
A. Activation of the renin-angiotensin-aldosterone system (RAAS)
B. Activation of the parasympathetic nervous system
C. Release of atrial natriuretic peptide (ANP)
D. Decreased production of antidiuretic hormone (ADH)
Correct Answer: A
Expert Explanation: In response to low blood volume, the kidneys release renin, which
eventually leads to the production of Angiotensin II. Angiotensin II is a potent
vasoconstrictor that increases systemic vascular resistance to help maintain blood
pressure. Additionally, this system triggers the release of aldosterone to retain sodium and
water, further attempting to expand plasma volume.
3. A patient with chronic obstructive pulmonary disease (COPD) develops pulmonary
hypertension. What is the primary pathophysiological driver of this condition?
A. Chronic alveolar hypoxia causing pulmonary vasoconstriction.
, B. Left ventricular failure leading to pulmonary venous congestion.
C. Increased cardiac output from chronic compensatory tachycardia.
D. Systemic hypertension spilling over into the pulmonary circulation.
Correct Answer: A
Expert Explanation: Chronic alveolar hypoxia in COPD patients triggers pulmonary artery
vasoconstriction as a mechanism to divert blood to better-ventilated areas. Over time, this
chronic vasoconstriction leads to structural remodeling and permanent narrowing of the
pulmonary vessels. The resulting increase in pulmonary vascular resistance manifests as
pulmonary hypertension and can eventually lead to right-sided heart failure (cor
pulmonale).
4. Disseminated intravascular coagulation (DIC) is characterized by which of the following
processes?
A. Localized clotting confined to the site of initial vascular injury.
B. An inherited deficiency in Factor VIII leading to spontaneous bleeding.
C. Systemic activation of coagulation followed by consumption of clotting factors.
D. Overproduction of platelets leading to arterial wall thickening.
Correct Answer: C
Expert Explanation: DIC involves the widespread, uncontrolled activation of the
coagulation cascade, leading to the formation of microthrombi throughout the vasculature.
