In a 75-year-old man who develops a sore throat three days after uncomplicated cataract surgery, are there any specific concerns or considerations?

Sore Throat 3 Days Post-Cataract Surgery: Key Concerns

While sore throat after cataract surgery is typically related to general anesthesia (if used), you must urgently rule out endophthalmitis and systemic infection, particularly culture-negative infective endocarditis, which can present with non-specific systemic symptoms including sore throat in the early postoperative period.

Primary Concern: Endophthalmitis Risk

The most critical concern is postoperative endophthalmitis, a vision-threatening complication. The causative organisms (coagulase-negative Staphylococcus 68.4%, S. aureus 6.8%, Streptococcus species 8.2%) are ocular surface pathogens that can cause systemic symptoms 1.

Immediate Assessment Required:

• Ocular examination: Look for decreased vision, eye pain, redness, hypopyon, or vitritis
• Systemic signs: Fever, chills, malaise accompanying the sore throat
• Timeline: Day 3 post-op is within the typical window for acute endophthalmitis

Secondary Concern: Systemic Infection

A recent case report documents culture-negative infective endocarditis following cataract surgery, presenting with fever, chills, anorexia, and generalized weakness—symptoms that could initially manifest as "sore throat" 2. This patient had:

• No obvious eye infection signs
• Persistent negative blood cultures
• Elevated inflammatory markers
• Required transesophageal echocardiography for diagnosis

Red Flags Requiring Urgent Workup:

• Fever (even intermittent)
• Constitutional symptoms (weakness, anorexia, chills)
• Persistent symptoms beyond 24-48 hours
• Any cardiac history or new cardiac symptoms

If Anesthesia-Related (Lower Risk Scenario)

If the patient had general anesthesia, sore throat is common but typically benign:

• Incidence: 41% with general anesthesia vs. 3% with local anesthesia 3
• Pooled incidence at 24 hours post-intubation: 16.4% 4
• Usually self-limiting and resolves within 48-72 hours

However, at day 3 post-op, persistence warrants investigation rather than reassurance.

Clinical Algorithm

Step 1: Immediate ocular examination

• Visual acuity, slit-lamp exam, dilated fundus exam
• If ANY signs of endophthalmitis → emergent ophthalmology consultation

Step 2: Assess for systemic infection

• Temperature, vital signs
• If fever or constitutional symptoms → CBC, inflammatory markers (CRP, ESR), blood cultures
• Consider cardiac evaluation if symptoms persist or worsen

Step 3: Anesthesia history

• If local anesthesia was used → sore throat is highly unusual and demands investigation
• If general anesthesia was used AND no systemic/ocular signs → may observe but maintain high suspicion

Step 4: Follow-up timeline

• Patient should be seen within 48 hours if symptoms persist 5
• Instruct patient to return immediately for vision changes, eye pain, fever, or worsening symptoms

Critical Pitfall to Avoid

Do not dismiss this as "routine post-anesthesia sore throat" without excluding serious complications. The combination of recent intraocular surgery and new systemic symptoms (even seemingly minor ones like sore throat) requires a lower threshold for investigation in a 75-year-old patient. The mortality and morbidity from missed endophthalmitis or endocarditis far outweigh the inconvenience of additional testing.

The patient should have immediate access to the operating ophthalmologist for evaluation 5, and if systemic infection is suspected, coordinate with internal medicine or infectious disease.