NU 578 Units 1-5 Exam Actual 2026/2027 with Detailed Rationales |
Complete Exam-Style Questions | Pass Guaranteed – A+
Graded(University of South Alabama)
EXAM INFORMATION
Total Questions: 70
Recommended Time: 105 Minutes
Passing Threshold: 78%
Exam Format: Multiple Choice Questions (MCQs)
Question Style: Scenario-Based, Applied, and Professional Decision-Making Questions
Difficulty Level: Comprehensive
==============================
SECTION 1: Advanced Health Assessment and Diagnostic Reasoning
Question 1
A 58-year-old male presents with progressive dyspnea on exertion, orthopnea, and
bilateral lower extremity edema. On cardiac auscultation, the nurse practitioner hears an
S3 gallop and a holosystolic murmur at the apex radiating to the axilla. Which physical
finding is most consistent with the underlying pathophysiology?
A. A displaced apical impulse laterally toward the left axilla
B. A palpable thrill at the right upper sternal border
C. A fixed split S2 sound on inspiration
D. A high-pitched diastolic decrescendo murmur at the left sternal border
,Correct Answer: A
Rationale: The presentation is consistent with dilated cardiomyopathy leading to mitral
regurgitation. The S3 gallop indicates volume overload, and the apical holosystolic
murmur radiating to the axilla is classic for mitral regurgitation. In dilated
cardiomyopathy, the left ventricle enlarges and displaces the apical impulse laterally. A
thrill at the right upper sternal border suggests aortic stenosis. A fixed split S2 is
characteristic of an atrial septal defect. A high-pitched diastolic decrescendo murmur at
the left sternal border is classic for aortic regurgitation.
Question 2
A 42-year-old female reports intermittent episodes of palpitations, lightheadedness, and
anxiety over the past three months. Her ECG during an asymptomatic period shows
sinus rhythm with a normal PR interval. During a symptomatic episode, the ECG reveals
a narrow-complex tachycardia with a rate of 180 bpm, absent P waves, and a regular
rhythm. Which diagnostic test is most appropriate to confirm the suspected arrhythmia
mechanism?
A. Electrophysiology study with programmed atrial stimulation
B. Continuous Holter monitoring for 48 hours
C. Adenosine administration during the tachycardia episode
D. Tilt-table testing with isoproterenol challenge
Correct Answer: C
,Rationale: The presentation of paroxysmal narrow-complex tachycardia with absent P
waves and regular rhythm is highly suggestive of atrioventricular nodal reentrant
tachycardia (AVNRT). Administering adenosine during the episode will terminate AVNRT
by blocking the AV node, thereby confirming the mechanism. An electrophysiology study
is invasive and reserved for refractory cases or ablation planning. Holter monitoring may
not capture the arrhythmia if episodes are infrequent. Tilt-table testing is used to
evaluate neurocardiogenic syncope, not supraventricular tachycardia.
Question 3
During a comprehensive geriatric assessment, the nurse practitioner notes that a
78-year-old patient has lost 12 pounds over the past six months without dieting.
Laboratory studies reveal a hemoglobin of 9.8 g/dL and a mean corpuscular volume of
108 fL. Which additional finding on peripheral blood smear would best support the
suspected etiology?
A. Hypersegmented neutrophils with macro-ovalocytes
B. Microcytic hypochromic red blood cells with target cells
C. Schistocytes and helmet cells
D. Basophilic stippling and nucleated red blood cells
Correct Answer: A
Rationale: The macrocytic anemia (MCV > 100 fL) with weight loss in an older adult
raises concern for megaloblastic anemia, most commonly due to vitamin B12 or folate
deficiency. Hypersegmented neutrophils and macro-ovalocytes are pathognomonic for
, megaloblastic anemia. Microcytic hypochromic cells with target cells suggest
thalassemia or liver disease. Schistocytes indicate microangiopathic hemolytic anemia.
Basophilic stippling and nucleated red blood cells are seen in lead poisoning and severe
hemolysis.
Question 4
A 35-year-old male with a history of intravenous drug use presents with fever, chills, and
a new holosystolic murmur at the left lower sternal border that increases with
inspiration. Blood cultures are pending. Which physical examination finding would most
strongly support a diagnosis of tricuspid valve endocarditis?
A. Osler nodes and Janeway lesions on the palms and soles
B. Pulsus paradoxus greater than 10 mmHg during inspiration
C. A murmur that becomes louder during inspiration
D. A diastolic blowing murmur at the right second intercostal space
Correct Answer: C
Rationale: The right-sided heart murmur that intensifies with inspiration is known as
Carvallo's sign, which is specific for tricuspid regurgitation. In the context of fever and IV
drug use, this strongly suggests tricuspid valve endocarditis. Osler nodes and Janeway
lesions can occur in any endocarditis but are not specific to right-sided involvement.
Pulsus paradoxus indicates cardiac tamponade. A diastolic blowing murmur at the right
second intercostal space suggests aortic regurgitation.
Complete Exam-Style Questions | Pass Guaranteed – A+
Graded(University of South Alabama)
EXAM INFORMATION
Total Questions: 70
Recommended Time: 105 Minutes
Passing Threshold: 78%
Exam Format: Multiple Choice Questions (MCQs)
Question Style: Scenario-Based, Applied, and Professional Decision-Making Questions
Difficulty Level: Comprehensive
==============================
SECTION 1: Advanced Health Assessment and Diagnostic Reasoning
Question 1
A 58-year-old male presents with progressive dyspnea on exertion, orthopnea, and
bilateral lower extremity edema. On cardiac auscultation, the nurse practitioner hears an
S3 gallop and a holosystolic murmur at the apex radiating to the axilla. Which physical
finding is most consistent with the underlying pathophysiology?
A. A displaced apical impulse laterally toward the left axilla
B. A palpable thrill at the right upper sternal border
C. A fixed split S2 sound on inspiration
D. A high-pitched diastolic decrescendo murmur at the left sternal border
,Correct Answer: A
Rationale: The presentation is consistent with dilated cardiomyopathy leading to mitral
regurgitation. The S3 gallop indicates volume overload, and the apical holosystolic
murmur radiating to the axilla is classic for mitral regurgitation. In dilated
cardiomyopathy, the left ventricle enlarges and displaces the apical impulse laterally. A
thrill at the right upper sternal border suggests aortic stenosis. A fixed split S2 is
characteristic of an atrial septal defect. A high-pitched diastolic decrescendo murmur at
the left sternal border is classic for aortic regurgitation.
Question 2
A 42-year-old female reports intermittent episodes of palpitations, lightheadedness, and
anxiety over the past three months. Her ECG during an asymptomatic period shows
sinus rhythm with a normal PR interval. During a symptomatic episode, the ECG reveals
a narrow-complex tachycardia with a rate of 180 bpm, absent P waves, and a regular
rhythm. Which diagnostic test is most appropriate to confirm the suspected arrhythmia
mechanism?
A. Electrophysiology study with programmed atrial stimulation
B. Continuous Holter monitoring for 48 hours
C. Adenosine administration during the tachycardia episode
D. Tilt-table testing with isoproterenol challenge
Correct Answer: C
,Rationale: The presentation of paroxysmal narrow-complex tachycardia with absent P
waves and regular rhythm is highly suggestive of atrioventricular nodal reentrant
tachycardia (AVNRT). Administering adenosine during the episode will terminate AVNRT
by blocking the AV node, thereby confirming the mechanism. An electrophysiology study
is invasive and reserved for refractory cases or ablation planning. Holter monitoring may
not capture the arrhythmia if episodes are infrequent. Tilt-table testing is used to
evaluate neurocardiogenic syncope, not supraventricular tachycardia.
Question 3
During a comprehensive geriatric assessment, the nurse practitioner notes that a
78-year-old patient has lost 12 pounds over the past six months without dieting.
Laboratory studies reveal a hemoglobin of 9.8 g/dL and a mean corpuscular volume of
108 fL. Which additional finding on peripheral blood smear would best support the
suspected etiology?
A. Hypersegmented neutrophils with macro-ovalocytes
B. Microcytic hypochromic red blood cells with target cells
C. Schistocytes and helmet cells
D. Basophilic stippling and nucleated red blood cells
Correct Answer: A
Rationale: The macrocytic anemia (MCV > 100 fL) with weight loss in an older adult
raises concern for megaloblastic anemia, most commonly due to vitamin B12 or folate
deficiency. Hypersegmented neutrophils and macro-ovalocytes are pathognomonic for
, megaloblastic anemia. Microcytic hypochromic cells with target cells suggest
thalassemia or liver disease. Schistocytes indicate microangiopathic hemolytic anemia.
Basophilic stippling and nucleated red blood cells are seen in lead poisoning and severe
hemolysis.
Question 4
A 35-year-old male with a history of intravenous drug use presents with fever, chills, and
a new holosystolic murmur at the left lower sternal border that increases with
inspiration. Blood cultures are pending. Which physical examination finding would most
strongly support a diagnosis of tricuspid valve endocarditis?
A. Osler nodes and Janeway lesions on the palms and soles
B. Pulsus paradoxus greater than 10 mmHg during inspiration
C. A murmur that becomes louder during inspiration
D. A diastolic blowing murmur at the right second intercostal space
Correct Answer: C
Rationale: The right-sided heart murmur that intensifies with inspiration is known as
Carvallo's sign, which is specific for tricuspid regurgitation. In the context of fever and IV
drug use, this strongly suggests tricuspid valve endocarditis. Osler nodes and Janeway
lesions can occur in any endocarditis but are not specific to right-sided involvement.
Pulsus paradoxus indicates cardiac tamponade. A diastolic blowing murmur at the right
second intercostal space suggests aortic regurgitation.
