Ultimate APEA 3P 2026/2027 Exam Prep Bundle – 4 Real Exams, Answer Key, and Complete
Study Guide | GRADE A+
Question 1
A 62-year-old man with a history of hypertension suddenly develops crushing substernal chest
pain that radiates to his left arm. The nurse practitioner suspects an acute myocardial infarction.
Which laboratory test becomes elevated first?
A. Troponin I
B. CK-MB
C. Myoglobin
D. BNP
Answer
✅ C. Myoglobin
Rationale
Myoglobin is released from injured muscle very quickly after myocardial injury.
• Myoglobin: rises within 1–2 hours
• Troponin I: rises in about 3–6 hours and is the most specific marker
• CK-MB: rises within 4–6 hours
• BNP: indicates heart failure, not myocardial infarction
Clinical Pearl: Troponin is the best test for confirming MI, but myoglobin rises first.
Question 2
Which electrolyte abnormality is most likely to cause peaked T waves on an ECG?
A. Hyponatremia
B. Hypokalemia
C. Hyperkalemia
D. Hypercalcemia
Answer
✅ C. Hyperkalemia
Rationale
Elevated potassium alters cardiac conduction.
,Typical ECG findings include:
• Tall, peaked T waves
• Widened QRS complexes
• Flattened or absent P waves
• Severe cases can progress to ventricular fibrillation or asystole.
Question 3
A patient with poorly controlled diabetes presents with excessive thirst, frequent urination, and
blurred vision. Which hormone deficiency is responsible?
A. Glucagon
B. Cortisol
C. Insulin
D. Growth hormone
Answer
✅ C. Insulin
Rationale
Insulin allows glucose to enter cells. When insulin is deficient or ineffective:
• Blood glucose rises.
• Glucose spills into the urine.
• Water follows glucose, causing polyuria.
• Dehydration leads to polydipsia.
Question 4
Which antihypertensive medication should be avoided during pregnancy?
A. Labetalol
B. Methyldopa
C. Nifedipine
D. Lisinopril
Answer
✅ D. Lisinopril
Rationale
, ACE inhibitors can cause fetal kidney damage and other serious fetal complications.
Safe options during pregnancy include:
• Labetalol
• Methyldopa
• Nifedipine
Question 5
A patient presents with fever, productive cough, and crackles in the right lower lung. Which
diagnosis is most likely?
A. Asthma
B. COPD
C. Pneumonia
D. Pulmonary embolism
Answer
✅ C. Pneumonia
Rationale
Classic findings include:
• Fever
• Productive cough
• Crackles
• Focal lung findings
• Chest X-ray showing infiltrates
Asthma usually presents with wheezing rather than crackles.
Question 6
A patient with chronic kidney disease develops anemia. What is the primary cause?
A. Iron overload
B. Vitamin B12 deficiency
C. Decreased erythropoietin production
D. Increased platelet destruction
Answer
Study Guide | GRADE A+
Question 1
A 62-year-old man with a history of hypertension suddenly develops crushing substernal chest
pain that radiates to his left arm. The nurse practitioner suspects an acute myocardial infarction.
Which laboratory test becomes elevated first?
A. Troponin I
B. CK-MB
C. Myoglobin
D. BNP
Answer
✅ C. Myoglobin
Rationale
Myoglobin is released from injured muscle very quickly after myocardial injury.
• Myoglobin: rises within 1–2 hours
• Troponin I: rises in about 3–6 hours and is the most specific marker
• CK-MB: rises within 4–6 hours
• BNP: indicates heart failure, not myocardial infarction
Clinical Pearl: Troponin is the best test for confirming MI, but myoglobin rises first.
Question 2
Which electrolyte abnormality is most likely to cause peaked T waves on an ECG?
A. Hyponatremia
B. Hypokalemia
C. Hyperkalemia
D. Hypercalcemia
Answer
✅ C. Hyperkalemia
Rationale
Elevated potassium alters cardiac conduction.
,Typical ECG findings include:
• Tall, peaked T waves
• Widened QRS complexes
• Flattened or absent P waves
• Severe cases can progress to ventricular fibrillation or asystole.
Question 3
A patient with poorly controlled diabetes presents with excessive thirst, frequent urination, and
blurred vision. Which hormone deficiency is responsible?
A. Glucagon
B. Cortisol
C. Insulin
D. Growth hormone
Answer
✅ C. Insulin
Rationale
Insulin allows glucose to enter cells. When insulin is deficient or ineffective:
• Blood glucose rises.
• Glucose spills into the urine.
• Water follows glucose, causing polyuria.
• Dehydration leads to polydipsia.
Question 4
Which antihypertensive medication should be avoided during pregnancy?
A. Labetalol
B. Methyldopa
C. Nifedipine
D. Lisinopril
Answer
✅ D. Lisinopril
Rationale
, ACE inhibitors can cause fetal kidney damage and other serious fetal complications.
Safe options during pregnancy include:
• Labetalol
• Methyldopa
• Nifedipine
Question 5
A patient presents with fever, productive cough, and crackles in the right lower lung. Which
diagnosis is most likely?
A. Asthma
B. COPD
C. Pneumonia
D. Pulmonary embolism
Answer
✅ C. Pneumonia
Rationale
Classic findings include:
• Fever
• Productive cough
• Crackles
• Focal lung findings
• Chest X-ray showing infiltrates
Asthma usually presents with wheezing rather than crackles.
Question 6
A patient with chronic kidney disease develops anemia. What is the primary cause?
A. Iron overload
B. Vitamin B12 deficiency
C. Decreased erythropoietin production
D. Increased platelet destruction
Answer
