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PTU FINAL EXAM1- 3 (Practice) NEWEST 2026 ACTUAL EXAM TEST- COMPLETE
REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+ (MOST RECENT!!)
PTU (Propylthiouracil) – EXAM 1
1
What is the primary therapeutic purpose of PTU?
Answer:
To treat hyperthyroidism
Rationale:
PTU decreases thyroid hormone production and activity.
2
PTU belongs to which medication class?
Answer:
Antithyroid (thioamide)
Rationale:
Thioamides inhibit thyroid hormone synthesis.
3
Which hormones are reduced by PTU therapy?
Answer:
T3 and T4
Rationale:
PTU inhibits formation of both thyroid hormones.
2026 2027 GRADED A+
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4
Which mechanism is UNIQUE to PTU?
Answer:
Inhibition of peripheral conversion of T4 to T3
Rationale:
This makes PTU especially effective in thyroid storm.
5
Which condition is a primary indication for PTU use?
Answer:
Graves’ disease
Rationale:
Graves’ disease causes excess thyroid hormone production.
6
Why is PTU preferred in thyroid storm?
Answer:
It rapidly lowers active T3 levels
Rationale:
T3 is the most potent thyroid hormone.
7
Which trimester of pregnancy favors PTU use?
Answer:
First trimester
Rationale:
PTU has lower teratogenic risk early in pregnancy.
2026 2027 GRADED A+
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8
Which serious adverse effect carries a black box warning?
Answer:
Severe hepatotoxicity
Rationale:
PTU can cause acute liver failure.
9
Which symptom suggests PTU-induced liver injury?
Answer:
Jaundice
Rationale:
Yellowing of skin indicates liver dysfunction.
10
Which lab values should be monitored closely during PTU therapy?
Answer:
AST and ALT
Rationale:
Elevated liver enzymes indicate hepatotoxicity.
11
Which blood disorder is associated with PTU?
Answer:
Agranulocytosis
Rationale:
PTU can cause dangerously low white blood cells.
2026 2027 GRADED A+
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12
Which symptom may indicate agranulocytosis?
Answer:
Fever and sore throat
Rationale:
These are early signs of infection due to low WBCs.
13
What should the nurse instruct a patient to do if fever develops?
Answer:
Stop PTU and contact the provider immediately
Rationale:
Prevents life-threatening complications.
14
How often is PTU usually administered?
Answer:
Every 8 hours
Rationale:
Short half-life requires multiple daily doses.
15
Why is PTU not first-line for long-term therapy?
Answer:
High risk of liver toxicity
Rationale:
Methimazole is safer for chronic use.
2026 2027 GRADED A+
PTU FINAL EXAM1- 3 (Practice) NEWEST 2026 ACTUAL EXAM TEST- COMPLETE
REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+ (MOST RECENT!!)
PTU (Propylthiouracil) – EXAM 1
1
What is the primary therapeutic purpose of PTU?
Answer:
To treat hyperthyroidism
Rationale:
PTU decreases thyroid hormone production and activity.
2
PTU belongs to which medication class?
Answer:
Antithyroid (thioamide)
Rationale:
Thioamides inhibit thyroid hormone synthesis.
3
Which hormones are reduced by PTU therapy?
Answer:
T3 and T4
Rationale:
PTU inhibits formation of both thyroid hormones.
2026 2027 GRADED A+
,2|Page
4
Which mechanism is UNIQUE to PTU?
Answer:
Inhibition of peripheral conversion of T4 to T3
Rationale:
This makes PTU especially effective in thyroid storm.
5
Which condition is a primary indication for PTU use?
Answer:
Graves’ disease
Rationale:
Graves’ disease causes excess thyroid hormone production.
6
Why is PTU preferred in thyroid storm?
Answer:
It rapidly lowers active T3 levels
Rationale:
T3 is the most potent thyroid hormone.
7
Which trimester of pregnancy favors PTU use?
Answer:
First trimester
Rationale:
PTU has lower teratogenic risk early in pregnancy.
2026 2027 GRADED A+
,3|Page
8
Which serious adverse effect carries a black box warning?
Answer:
Severe hepatotoxicity
Rationale:
PTU can cause acute liver failure.
9
Which symptom suggests PTU-induced liver injury?
Answer:
Jaundice
Rationale:
Yellowing of skin indicates liver dysfunction.
10
Which lab values should be monitored closely during PTU therapy?
Answer:
AST and ALT
Rationale:
Elevated liver enzymes indicate hepatotoxicity.
11
Which blood disorder is associated with PTU?
Answer:
Agranulocytosis
Rationale:
PTU can cause dangerously low white blood cells.
2026 2027 GRADED A+
, 4|Page
12
Which symptom may indicate agranulocytosis?
Answer:
Fever and sore throat
Rationale:
These are early signs of infection due to low WBCs.
13
What should the nurse instruct a patient to do if fever develops?
Answer:
Stop PTU and contact the provider immediately
Rationale:
Prevents life-threatening complications.
14
How often is PTU usually administered?
Answer:
Every 8 hours
Rationale:
Short half-life requires multiple daily doses.
15
Why is PTU not first-line for long-term therapy?
Answer:
High risk of liver toxicity
Rationale:
Methimazole is safer for chronic use.
2026 2027 GRADED A+
