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  • Title: Case report: epidural abscess in a parturient with pruritic urticarial papules and plaques of pregnancy (PUPPP).
    Author: Cummings KC, Dolak JA.
    Journal: Can J Anaesth; 2006 Oct; 53(10):1010-4. PubMed ID: 16987856.
    Abstract:
    PURPOSE: To describe the risk factors for epidural abscess (EA) formation following epidural analgesia in a parturient with pruritic urticarial papules and plaques of pregnancy (PUPPP). CLINICAL FEATURES: A 33 yr-old gravida 2 nulliparous patient at 36 weeks gestation presented with severe pre-eclampsia, and PUPPP (treated with prednisone). Magnesium prophylaxis was started and labour was induced. An epidural catheter was placed at the L(3-4) level using standard aseptic technique. Bupivacaine was incrementally injected to achieve a T10 sensory level, and analgesia was maintained using a continuous infusion of 0.0625% bupivacaine with fentanyl. Nine days post-delivery, the patient developed back pain radiating to her right leg, but she was otherwise asymptomatic. She was afebrile; with a slightly tender, non-erythematous, non-draining, 1 cm nodule at the epidural catheter site. Motor and sensory examinations were normal at that time. However, the patient returned 24 hr later and further investigations revealed: WBC 17,800.mm(-3), platelets 486,000.mm(-3), erythrocyte sedimentation rate 50 mm.hr(-1), and C-reactive protein 8.8 mg.dL(-1). The magnetic resonance imaging demonstrated an EA at the L(3-4) level causing minimal cord compression. The patient underwent an emergency decompressive laminectomy. Cultures revealed methicillin-sensitive Staphylococcus aureus. Her pain improved, and she was discharged on the third postoperative day with a six-week course of iv ceftriaxone. CONCLUSION: Causative organisms for EAs include coagulase-negative Staphylococci, S. aureus, and Gram-negative bacilli. Infection can occur either hematogenously or by direct contamination during catheter placement. Risk factors include immunocompromised states and PUPPP, as with the case of this patient.
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