DHA Pharmacist Drug Interactions and Safety 2

Question 1

What is the DRESS syndrome and which medications commonly cause it?

Accepted Answer

Drug Reaction with Eosinophilia and Systemic Symptoms — a severe reaction caused by anticonvulsants, allopurinol, or antibiotics occurring 2-8 weeks after starting

Answer

DRESS is a severe, potentially fatal drug reaction presenting with rash, fever, eosinophilia, and organ involvement, commonly caused by carbamazepine, phenytoin, allopurinol, and sulfonamides, with delayed onset of 2-8 weeks.

Question 2

What is the significance of therapeutic drug monitoring (TDM) in DHA pharmacy practice?

Accepted Answer

Monitoring blood levels of narrow therapeutic index drugs (vancomycin, aminoglycosides, lithium, digoxin) to ensure efficacy and prevent toxicity

Answer

TDM is essential for drugs with narrow therapeutic indices where the difference between effective and toxic levels is small, including vancomycin, aminoglycosides, lithium, digoxin, and phenytoin.

Question 3

How should DHA pharmacists manage drug allergies versus drug intolerances?

Accepted Answer

True allergies involve immune-mediated reactions (anaphylaxis risk) requiring avoidance, while intolerances cause non-immune side effects that may be manageable

Answer

DHA pharmacists must distinguish true drug allergies (immune-mediated, potentially life-threatening) from intolerances (non-immune, dose-dependent side effects), as management differs significantly — avoidance versus symptom management.

Question 4

What is the pharmacist's responsibility regarding medication safety alerts and Dear Healthcare Professional Communications (DHPCs)?

Accepted Answer

Review all safety alerts promptly, implement required changes in practice, communicate to relevant staff, and update patient counseling accordingly

Answer

DHA pharmacists must promptly review all medication safety alerts and DHPCs, implement required practice changes (new warnings, dosing changes, restrictions), communicate to staff, and update patient counseling.

Question 5

What are the risks of abrupt discontinuation of certain medications that DHA pharmacists should counsel about?

Accepted Answer

Beta-blockers (rebound hypertension), benzodiazepines (seizures), SSRIs (discontinuation syndrome), and corticosteroids (adrenal crisis) require gradual tapering

Answer

DHA pharmacists must counsel patients about medications requiring gradual tapering: beta-blockers (rebound hypertension/angina), benzodiazepines (seizures), SSRIs (discontinuation syndrome), and corticosteroids (adrenal insufficiency).

DHA Pharmacist Practice Test

DHA Pharmacist Practice Test

DHA Pharmacist Drug Interactions and Safety 2