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PTU Final Exam NEWEST 2025 ACTUAL EXAM TEST- COMPLETE REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+ (MOST RECENT!!)
PTU (Propylthiouracil) Practice Questions
1
What is the primary indication for PTU?
Answer:
Hyperthyroidism
Rationale:
PTU reduces thyroid hormone production and is used to manage hyperthyroidism.
2
PTU belongs to which drug class?
Answer:
Thioamide antithyroid agent
Rationale:
Thioamides inhibit thyroid hormone synthesis.
3
Which thyroid hormones are affected by PTU?
Answer:
T3 and T4
Rationale:
PTU inhibits synthesis of both thyroid hormones.
2026 2027 GRADED A+
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4
PTU has a unique ability compared to methimazole. What is it?
Answer:
Blocks peripheral conversion of T4 to T3
Rationale:
This makes PTU especially useful in thyroid storm.
5
Why is PTU preferred in thyroid storm?
Answer:
It rapidly decreases active T3 levels
Rationale:
T3 is the most active thyroid hormone; reducing it quickly is lifesaving.
6
Which trimester of pregnancy is PTU preferred?
Answer:
First trimester
Rationale:
Methimazole increases risk of congenital defects early in pregnancy.
7
Which serious adverse effect carries a black box warning for PTU?
Answer:
Severe hepatotoxicity
Rationale:
PTU can cause acute liver failure.
2026 2027 GRADED A+
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8
Which lab should be monitored most closely with PTU therapy?
Answer:
Liver function tests (AST, ALT)
Rationale:
Early detection of liver injury is critical.
9
A patient on PTU reports dark urine and jaundice. What is the priority action?
Answer:
Stop the medication and notify the provider
Rationale:
These are signs of liver failure.
10
Which blood disorder is associated with PTU?
Answer:
Agranulocytosis
Rationale:
PTU can cause a dangerous drop in white blood cells.
11
Which symptom suggests agranulocytosis?
Answer:
Sore throat and fever
Rationale:
Infection symptoms may indicate low WBC count.
2026 2027 GRADED A+
, 4|Page
12
What instruction should the nurse give regarding sore throat while on PTU?
Answer:
Stop the medication and contact the provider immediately
Rationale:
This may indicate agranulocytosis.
13
How often is PTU typically administered?
Answer:
Every 8 hours
Rationale:
PTU has a short half-life.
14
Why is PTU not preferred for long-term therapy?
Answer:
High risk of liver toxicity
Rationale:
Methimazole is safer for chronic use.
15
Which medication is usually preferred over PTU for long-term hyperthyroidism?
Answer:
Methimazole
Rationale:
Lower risk of severe hepatotoxicity.
2026 2027 GRADED A+
PTU Final Exam NEWEST 2025 ACTUAL EXAM TEST- COMPLETE REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+ (MOST RECENT!!)
PTU (Propylthiouracil) Practice Questions
1
What is the primary indication for PTU?
Answer:
Hyperthyroidism
Rationale:
PTU reduces thyroid hormone production and is used to manage hyperthyroidism.
2
PTU belongs to which drug class?
Answer:
Thioamide antithyroid agent
Rationale:
Thioamides inhibit thyroid hormone synthesis.
3
Which thyroid hormones are affected by PTU?
Answer:
T3 and T4
Rationale:
PTU inhibits synthesis of both thyroid hormones.
2026 2027 GRADED A+
,2|Page
4
PTU has a unique ability compared to methimazole. What is it?
Answer:
Blocks peripheral conversion of T4 to T3
Rationale:
This makes PTU especially useful in thyroid storm.
5
Why is PTU preferred in thyroid storm?
Answer:
It rapidly decreases active T3 levels
Rationale:
T3 is the most active thyroid hormone; reducing it quickly is lifesaving.
6
Which trimester of pregnancy is PTU preferred?
Answer:
First trimester
Rationale:
Methimazole increases risk of congenital defects early in pregnancy.
7
Which serious adverse effect carries a black box warning for PTU?
Answer:
Severe hepatotoxicity
Rationale:
PTU can cause acute liver failure.
2026 2027 GRADED A+
,3|Page
8
Which lab should be monitored most closely with PTU therapy?
Answer:
Liver function tests (AST, ALT)
Rationale:
Early detection of liver injury is critical.
9
A patient on PTU reports dark urine and jaundice. What is the priority action?
Answer:
Stop the medication and notify the provider
Rationale:
These are signs of liver failure.
10
Which blood disorder is associated with PTU?
Answer:
Agranulocytosis
Rationale:
PTU can cause a dangerous drop in white blood cells.
11
Which symptom suggests agranulocytosis?
Answer:
Sore throat and fever
Rationale:
Infection symptoms may indicate low WBC count.
2026 2027 GRADED A+
, 4|Page
12
What instruction should the nurse give regarding sore throat while on PTU?
Answer:
Stop the medication and contact the provider immediately
Rationale:
This may indicate agranulocytosis.
13
How often is PTU typically administered?
Answer:
Every 8 hours
Rationale:
PTU has a short half-life.
14
Why is PTU not preferred for long-term therapy?
Answer:
High risk of liver toxicity
Rationale:
Methimazole is safer for chronic use.
15
Which medication is usually preferred over PTU for long-term hyperthyroidism?
Answer:
Methimazole
Rationale:
Lower risk of severe hepatotoxicity.
2026 2027 GRADED A+
