L 1 ENT

General Overview of Pharm + Clinical Exams

• Focus on drug + dose + duration + clinical use.

ENT + EYE PHARM MCQs

• Focused on prescribing decisions with clear dosing guidelines.

• Each question presents scenarios relevant to clinical practice.

Question 1: Acute Otitis Externa

• Prescribed Drug: Ciprofloxacin/Dexamethasone Otic Drops

• Correct Dosing Option: B. 4 drops twice daily for 7 days

• Explanations:
    - Option A: Underdosed and too short duration.
    - Option B: Correct, standard dosing of ~4 drops BID for 7 days.
    - Option C: Incorrect dosing schedule.
    - Option D: Too frequent application.

Question 2: Pain Management for Otitis Externa

• Drug: Ibuprofen

• Correct Instruction: B. 2 tablets every 4–6 hours PRN

• Explanations:
    - Option A: Inadequate dosing.
    - Option B: Correct OTC dosing per notes.
    - Option C: Toxic dosing level.
    - Option D: Too infrequent dosing.

Question 3: Prescribing Amoxicillin for ABRS

• Condition: Uncomplicated Acute Bacterial Rhinosinusitis (ABRS)

• Correct Dosing Regimen: B. 500 mg three times daily for 5–10 days

• Explanations:
    - Option A: Too low and duration is too short.
    - Option B: Correct standard dosing.
    - Option C: Incorrectly resembles doxycycline dosing.
    - Option D: Incorrect dosing schedule.

Question 4: Amoxicillin-Clavulanate for ABRS

• Correct Dosing: B. 875/125 mg twice daily for 7–10 days

• Explanations:
    - Option A: Underdosed.
    - Option B: Correct regimen.
    - Option C: Incorrect frequency.
    - Option D: Not an appropriate formulation for ABRS.

Question 5: Doxycycline Regimen for Penicillin Allergy

• Prescribed Dose: B. 100 mg twice daily or 200 mg once daily for 5–10 days

• Explanations:
    - Option A: Too low.
    - Option B: Correct dosing based on guidelines.
    - Option C: Incorrect drug dosing.
    - Option D: Incorrect dosing frequency.

Question 6: Levofloxacin Use for ABRS

• Prescribed Dose: C. 500 mg once daily for 5–10 days

• Explanations:
    - Option A: Too low of a dose.
    - Option B: Subtherapeutic.
    - Option C: Correct dosing as per resistance guidelines.
    - Option D: Toxic to patients.

Question 7: Moxifloxacin for ABRS

• Correct Dosing: B. 400 mg once daily for 5–10 days

• Explanations:
    - Option A: Too low dosing.
    - Option B: Correct dosing schedule.
    - Option C: Excessive dosage.
    - Option D: Incorrect dosing scheme.

Question 8: Mometasone Nasal Spray for Allergic Rhinitis

• Correct Instruction: B. 2 sprays each nostril once daily

• Explanations:
    - Option A: Insufficient, requiring continuous use.
    - Option B: Correct dosing for effective treatment.
    - Option C: Overuse can lead to adverse effects.
    - Option D: Excessive dosing instruction.

Question 9: Ciprofloxacin Eye Drops for Bacterial Conjunctivitis

• Correct Regimen: B. 1–2 drops every 2 hours for 2 days, then every 4 hours for 5 days

• Explanations:
    - Option A: Ineffective under-dosing.
    - Option B: Correct stepped dosing approach.
    - Option C: Incorrect frequency of administration.
    - Option D: Application frequency too infrequent.

Question 10: Polymyxin B + Trimethoprim Eye Drops Dosing

• Correct Dosing: B. 1–2 drops every 3–6 hours for 7–10 days

• Explanations:
    - Option A: Underdosing the regimen.
    - Option B: Correct regimen based on guidelines.
    - Option C: Too infrequent application schedule.
    - Option D: Incorrect dosing setup.

HIGH-YIELD DRUG PEARLS (TEST FAVORITES)

• Ciprodex (ciprofloxacin + dexamethasone): 4 drops BID × 7 days.

• Amoxicillin-Clavulanate: 875/125 mg BID × 7–10 days.

• Doxycycline: 100 mg BID or 200 mg once daily.

• Levofloxacin: 500 mg daily.

• Moxifloxacin: 400 mg daily.

• Mometasone Nasal Spray: 2 sprays/nostril daily.

• Ciprofloxacin Eye Drops: q2h then q4h (step-down dosing).

Otorrhea - Ear Discharge (Exam Considerations)

• Symptoms/Signs: Ear pain after Q-tip use, muffled hearing, white discharge.

• Differential Diagnosis (DDx): Exclude conditions by anatomical location:
    - External Ear: Acute otitis externa, foreign body, trauma to ear canal.
    - Middle Ear: Acute otitis media with TM perforation, chronic suppurative otitis media, cholesteatoma.
    - Other: Fungal otitis externa, myringitis.
  

Physical Examination Findings

• General Findings: Consider vital signs and overall appearance.

• Specific Exam: Examine ears for wax, discharge, tenderness; otoscopic examination for TM findings.

• Notable Findings: EAC discharge, positive pain during tragal manipulation, symmetrical auricles.

• Diagnosing Acute Otitis Externa: Look for supportive evidence such as discharge, inflammation, and pain upon manipulation of tragus.
  

Treatment Protocol - 5 Steps

• Topical Therapies:
    1. Aural toilet (debried obstruction)
    2. Treat inflammation and infection
    3. Control pain
    4. Avoid promoting factors
    5. Follow-up culture for recalcitrant cases.

• Agents: Antibiotics, antiseptics, glucocorticoids, acidifying solutions.

Topical Therapy for External Otitis

• Indications for Topical Therapy: Initial therapy for diffuse, uncomplicated cases.
    - Considerations for ototoxicity with aminoglycosides such as neomycin.

• Precautions: Avoid acidifying solutions in cases of TM perforation and assess for allergic reactions.

Pain Management

• Mild to Moderate Pain: Acetaminophen or NSAIDs (e.g., Ibuprofen).

Nasal Discharge & Congestion

• History: Viral URI with persistent worsening after initial improvement.

• Differential Diagnosis: Acute bacterial rhinosinusitis vs Viral URI.

• **Common Pathogens: ** Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis.

• Examinations: Notable nasal examination for tender maxillary sinuses and purulent discharge.

• Diagnosis Evidence: Double worsening symptom pattern indicative of ABRS.

• Treatment Options: Watchful waiting or antibiotics depending on severity and duration of symptoms.