Free PTCB PTCE Practice Exam with Questions & Answers | Set: 7

Risperidone (Risperdal oral solution)is anatypical antipsychoticused to treatschizophrenia, bipolar disorder, and autism-related irritability.

Itsoral liquid formulationmust be storedin the refrigerator (between 2°C and 8°C or 36°F to 46°F)to maintain stability.

If left at room temperature for an extended period, theactive ingredients can degrade, reducing the medication's effectiveness.

Storage Considerations for Other Medications:

Gabapentin (Neurontin liquid formulation):Must be refrigerated.✅

Sertraline (Zoloft oral solution):Stored at room temperature.❌

Aripiprazole (Abilify liquid formulation):Stored at room temperature.❌

????Reference:Manufacturer’s storage guidelines,USP Chapter <797>for compounded sterile preparations.

Arexvyis anRSV (respiratory syncytial virus) vaccinefor adults60+ years.

Oncereconstituted, itmust be used within 4 hoursto ensurestability and potency.

After4 hours, bacterial growth andloss of vaccine efficacymake it unsafe for administration.

Why Other Options Are Incorrect:

A. 30 minutes?❌Too short—vaccines are stable for a longer duration.

C. 24 hours?❌Too long—Arexvy degrades faster.

D. 1 week?❌No vaccine remains effective for 7 days after reconstitution.

????Reference:CDC Vaccine Storage & Handling Guidelines,Arexvy Manufacturer Labeling (GSK).

Calcium carbonate binds to doxycycline, preventing its absorption, reducing its effectiveness.

Doxycycline is a tetracycline antibiotic used for bacterial infections.

Patients should take doxycycline 1–2 hours before or after antacids.

????Reference:FDA Drug Interaction Guidelines, PTCB Medication Absorption Guide.

Comprehensive and Detailed Step-by-Step Explanation:

To calculate the percentage ofpsylliumin the final preparation:

Formula:

A math equations with numbers and symbols Description automatically generated with medium confidence

Sincepsylliummakes up500 gout of1000 g (1 kg)of the bulk laxative, it accounts for50%of the total formulation.

????Reference:

USP <795>Compounding Standards

PTCE ExamPharmaceutical Calculations

Anear miss(orclose call) is anerror that is identified and corrected before it causes harm to a patient.

Example:A technician picks uphydroxyzine (an antihistamine) instead of hydralazine (a blood pressure medication),but the pharmacist catches the mistake before dispensing.

Why Other Options Are Incorrect:

A. Adverse Drug Event (ADE)?❌Occurs when a patient is actually harmed by medication.

B. Recall?❌Issued by manufacturers or the FDA when a drug is defective or unsafe.

D. Root-Cause Analysis (RCA)?❌A method toanalyze errors AFTER they occurto prevent future mistakes.

????Reference:ISMP Medication Safety Guidelines, PTCE Exam Study Guide on Error Prevention.

Oxaprozinis anonsteroidal anti-inflammatory drug (NSAID)used to treat arthritis. It is listed on theISMP (Institute for Safe Medication Practices) List of Confused Drug Namesdue to its similarity toTopamax (topiramate), an anticonvulsant used for epilepsy and migraine prevention. The confusion arises because both drug nameslook and sound similar, which can lead to dispensing errors.

A. Tobradex→ Incorrect. Tobradex is anantibiotic/steroid ophthalmic medicationand is not confused with oxaprozin.

C. Tradjenta→ Incorrect. Tradjenta (linagliptin) is aDPP-4 inhibitor for diabetesand is not commonly confused with oxaprozin.

D. Trileptal→ Incorrect. Trileptal (oxcarbazepine) is ananticonvulsantbut is not on the ISMP Confused Drug List with oxaprozin.

Incorrect Answer Choices:Pharmacy Technician References:

PTCB PTCE Exam Content Outline (Error Prevention and Look-Alike/Sound-Alike (LASA) Drugs)

Institute for Safe Medication Practices (ISMP) List of Confused Drug Names

FDA Drug Safety Communications

Mosby’s Pharmacy Technician Exam Review