A 38-year-old woman undergoes open appendectomy for acute appendicitis. The appendix is perforated with purulent peritoneal fluid. On postoperative day 3, the patient has persistent fever (38.8°C), tachycardia (110/min), and the surgical wound shows erythema and induration but no fluctuance. There is no purulent drainage. Hemoglobin is 9.2 g/dL (preop 12.5), and WBC is 16,500/µL. What is the most appropriate next step in management?
A. Perform bedside ultrasound of the wound and abdomen; drain if collection is identified
B. Start or escalate IV broad-spectrum antibiotics; obtain blood cultures and monitor closely for 24–48 hours
C. Perform immediate wound exploration and drainage under local anesthesia
D. Obtain urgent CT abdomen/pelvis to detect occult intra-abdominal or wound collection
Explanation
Clinical Scenario Analysis
The patient presents with early postoperative fever (day 3) after perforated appendicitis with:
Systemic signs: fever, tachycardia
Local wound signs: erythema and induration (cellulitis), but no fluctuance or purulent drainage
Laboratory: anemia (likely from blood loss/inflammation) and leukocytosis
Risk factors: perforated appendix with peritoneal contamination
Differential Diagnosis of Postoperative Fever
Table
Finding
Diagnosis
Management
Fluctuance + purulent drainage
Wound abscess
Urgent drainage
Erythema + induration, NO fluctuance
Cellulitis/early infection
IV antibiotics + monitoring
Fever + no wound signs
Intra-abdominal collection
Imaging (CT/US) ± drainage
Fever + respiratory signs
Pneumonia
CXR, respiratory support
Why Antibiotics & Observation is Correct
Key Point
In the absence of fluctuance or purulent drainage, cellulitis (not abscess) is the primary concern and responds to IV antibiotics. Premature surgical drainage of cellulitis increases morbidity without benefit.
High-YieldNEET PG
The absence of fluctuance is critical — it indicates no loculated collection. Erythema and induration alone represent inflammatory cellulitis, which is managed medically.
1.
No abscess present — fluctuance is the clinical hallmark of abscess; its absence argues against loculated collection
2.
Cellulitis responds to antibiotics — broad-spectrum coverage (e.g., piperacillin-tazobactam or carbapenems for perforated appendix) is appropriate
3.
Blood cultures guide therapy — essential in postoperative sepsis to identify causative organisms
4.
Close monitoring (24–48 hours) — if fever persists or fluctuance develops, escalate to imaging or drainage
5.
Avoid unnecessary surgery — opening a cellulitic wound without abscess increases infection risk and delays healing
Postoperative Fever Management Decision Tree
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Clinical Pearl
Perforated appendicitis carries high risk of polymicrobial infection (E. coli, Bacteroides, Enterococcus, anaerobes). Empiric coverage must include both aerobic gram-negatives and anaerobes. Blood cultures are essential because bacteremia is common in perforated viscus.
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