NURS 5432 ADVANCED NURSING PRACTICE
FINAL EXAM TEST BANK Q&A WITH
DETAILED RATIONALES (NEWEST VERIFIED
VERSION)
Question 1
A 55-year-old male presents with acute, severe chest pain radiating to his left
jaw. The nurse practitioner suspects myocardial infarction. Which cellular
change occurs first during myocardial ischemia?
A) Lactic acidosis due to anaerobic glycolysis
B) Failure of the sodium-potassium pump
C) Cellular swelling and membrane rupture
D) Influx of calcium ions into the mitochondria
,VERIFIED ANSWER: A) Lactic acidosis due to anaerobic glycolysis
EXPLANATION: Within seconds of myocardial ischemia, the lack of oxygen
forces cells to switch from aerobic metabolism to anaerobic glycolysis. This
process rapidly produces lactic acid, lowering intracellular pH (lactic
acidosis) before mechanical pump failure or structural membrane rupture
occurs.
Question 2
A patient is prescribed a medication that acts as a competitive antagonist. What
effect does a competitive antagonist have on the dose-response curve of an
agonist?
A) Shifts the curve to the right, decreasing potency
B) Shifts the curve downward, decreasing maximal efficacy
C) Shifts the curve to the left, increasing potency
D) Shifts the curve upward, increasing maximal efficacy
VERIFIED ANSWER: A) Shifts the curve to the right, decreasing potency
EXPLANATION: Competitive antagonists bind reversibly to the same
receptor site as the agonist. This can be overcome by increasing the
concentration of the agonist, which shifts the dose-response curve to the right,
meaning a higher dose is needed to achieve the same effect (reduced potency)
while maximal efficacy remains unchanged.
Question 3
,During a physical assessment, the nurse practitioner notes a high-pitched,
musical whistling sound heard primarily during expiration throughout the lung
fields. How should this finding be documented?
A) Stridor
B) Wheezes
C) Coarse crackles
D) Pleural friction rub
VERIFIED ANSWER: B) Wheezes
EXPLANATION: Wheezes are continuous, high-pitched, musical sounds
caused by air flowing through narrowed or constricted small airways, typical
of asthma or COPD. Stridor is a harsh inspiratory sound indicating upper
airway obstruction, while crackles represent fluid in the alveoli.
Question 4
A patient with chronic kidney disease presents with a serum potassium level of
6.8 mEq/L. Which electrocardiogram (ECG) change is most characteristic of
this condition?
A) Prominent U waves
B) Prolonged QT interval
C) Tall, peaked T waves
D) ST-segment depression
VERIFIED ANSWER: C) Tall, peaked T waves
EXPLANATION: Severe hyperkalemia (potassium > 6.0 mEq/L) alters
myocardial repolarization, characteristically manifesting as tall, symmetrical,
, peaked T waves on an ECG. Prominent U waves and ST depression are
instead associated with hypokalemia.
Question 5
Which type of hypersensitivity reaction is mediated by IgE antibodies binding
to mast cells, resulting in anaphylaxis upon re-exposure to an allergen?
A) Type I (Immediate)
B) Type II (Cytotoxic)
C) Type III (Immune complex)
D) Type IV (Delayed-type)
VERIFIED ANSWER: A) Type I (Immediate)
EXPLANATION: Type I hypersensitivity reactions are classic immediate
allergic reactions mediated by IgE antibodies. Upon re-exposure, the allergen
cross-links IgE on mast cells and basophils, causing the rapid degranulation
and release of histamine, which leads to anaphylaxis.
Question 6
A patient is initiated on Lisinopril for hypertension. The nurse practitioner
instructs the patient to seek immediate medical attention if they develop
swelling of the face, lips, or tongue. What is the biochemical cause of this
adverse reaction?
A) Increased breakdown of substance P
FINAL EXAM TEST BANK Q&A WITH
DETAILED RATIONALES (NEWEST VERIFIED
VERSION)
Question 1
A 55-year-old male presents with acute, severe chest pain radiating to his left
jaw. The nurse practitioner suspects myocardial infarction. Which cellular
change occurs first during myocardial ischemia?
A) Lactic acidosis due to anaerobic glycolysis
B) Failure of the sodium-potassium pump
C) Cellular swelling and membrane rupture
D) Influx of calcium ions into the mitochondria
,VERIFIED ANSWER: A) Lactic acidosis due to anaerobic glycolysis
EXPLANATION: Within seconds of myocardial ischemia, the lack of oxygen
forces cells to switch from aerobic metabolism to anaerobic glycolysis. This
process rapidly produces lactic acid, lowering intracellular pH (lactic
acidosis) before mechanical pump failure or structural membrane rupture
occurs.
Question 2
A patient is prescribed a medication that acts as a competitive antagonist. What
effect does a competitive antagonist have on the dose-response curve of an
agonist?
A) Shifts the curve to the right, decreasing potency
B) Shifts the curve downward, decreasing maximal efficacy
C) Shifts the curve to the left, increasing potency
D) Shifts the curve upward, increasing maximal efficacy
VERIFIED ANSWER: A) Shifts the curve to the right, decreasing potency
EXPLANATION: Competitive antagonists bind reversibly to the same
receptor site as the agonist. This can be overcome by increasing the
concentration of the agonist, which shifts the dose-response curve to the right,
meaning a higher dose is needed to achieve the same effect (reduced potency)
while maximal efficacy remains unchanged.
Question 3
,During a physical assessment, the nurse practitioner notes a high-pitched,
musical whistling sound heard primarily during expiration throughout the lung
fields. How should this finding be documented?
A) Stridor
B) Wheezes
C) Coarse crackles
D) Pleural friction rub
VERIFIED ANSWER: B) Wheezes
EXPLANATION: Wheezes are continuous, high-pitched, musical sounds
caused by air flowing through narrowed or constricted small airways, typical
of asthma or COPD. Stridor is a harsh inspiratory sound indicating upper
airway obstruction, while crackles represent fluid in the alveoli.
Question 4
A patient with chronic kidney disease presents with a serum potassium level of
6.8 mEq/L. Which electrocardiogram (ECG) change is most characteristic of
this condition?
A) Prominent U waves
B) Prolonged QT interval
C) Tall, peaked T waves
D) ST-segment depression
VERIFIED ANSWER: C) Tall, peaked T waves
EXPLANATION: Severe hyperkalemia (potassium > 6.0 mEq/L) alters
myocardial repolarization, characteristically manifesting as tall, symmetrical,
, peaked T waves on an ECG. Prominent U waves and ST depression are
instead associated with hypokalemia.
Question 5
Which type of hypersensitivity reaction is mediated by IgE antibodies binding
to mast cells, resulting in anaphylaxis upon re-exposure to an allergen?
A) Type I (Immediate)
B) Type II (Cytotoxic)
C) Type III (Immune complex)
D) Type IV (Delayed-type)
VERIFIED ANSWER: A) Type I (Immediate)
EXPLANATION: Type I hypersensitivity reactions are classic immediate
allergic reactions mediated by IgE antibodies. Upon re-exposure, the allergen
cross-links IgE on mast cells and basophils, causing the rapid degranulation
and release of histamine, which leads to anaphylaxis.
Question 6
A patient is initiated on Lisinopril for hypertension. The nurse practitioner
instructs the patient to seek immediate medical attention if they develop
swelling of the face, lips, or tongue. What is the biochemical cause of this
adverse reaction?
A) Increased breakdown of substance P
