Intravenous immunoglobulins and plasmapheresis combined treatment in patients with severe toxic epidermal necrolysis: preliminary report

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Summary

Toxic epidermal necrolysis (TEN) is an acute drug-induced life-threatening disorder characterised by extensive epidermal exfoliation and high rate of mortality. Between October 2000 and April 2003, five severe TEN patients were evaluated using a specific TEN severity-of-illness scale (SCORTEN) and treated for the first time, with a combined therapy using Intravenous Human Immunoglobulins (IVIG) and plasmapheresis.

The standardised mortality ratio (SMR) analysis ([Σ observed deaths/Σ expected deaths]×100) was applied to establish how IVIG and plasmapheresis treatment could reduce TEN patient mortality.

The observed mortality was one out of five patients corresponding to 20%. The expected mortality based on SCORTEN was 3.319 corresponding to 66%. The SMR analysis revealed a 70% reduction in mortality (SMR=0.30; 95% confidence interval, 0.0–0.96).

Our series show a low mortality rate (20%) related to the severity of the patients (66% expected mortality). The use of IVIG in association with plasmapheresis has a rational basis and may be effective in severe TEN patients.

Section snippets

Patients and methods

Between October 2000 and April 2003, five severe TEN patients were referred to the Intensive Care Burn Unit (ICBU) of Sassari, in the island of Sardinia, Italy, (about 1 600 000 inhabitants). Total body surface area (TBSA) involved was calculated using the Lund–Browder chart.21 The TBSA involved was defined by the Nicolsky's sign (detachment of epidermis by digital pressure), erythematous confluent maculae, blisters and areas of detached epidermis.

Every drug introduced in the preceding 3 weeks

Results

Patients were referred to ICBU after 4.6 days average delay (range 2–9). Mean percentage of TBSA involved was 78.6% (range 62–90%) and mean detached skin percentage was 39.6% (range 28–52%).

Patients' clinical status is reported in Table 3. Mucosal involvement was noticed in the mouths of all patients. Patient 3 suffered from Crohn's disease and corticosteroids administration was continued under specialist's control. In all patients, except patient 3, parenteral nutrition was required. Ocular

Discussion

TEN is a rare pathological condition with a high mortality rate that requires immediate systemic and topical treatment due to its high mortality rate. The mechanism causing reaction is unknown. Paul et al.16 have demonstrated destruction of keratinocytes in TEN as result of apoptosis process. This is related to activation of Keratinocytes' death receptor (CD95 or Fas) inducted by interaction with its ligand (Fas-L) that is found up-regulated in TEN, probably secreted by peripheral blood

Acknowledgements

The authors would like to thank Dr Amelia Lissia, Department of Pathology, University of Sassari, for her support on histological analysis and the Physicians of the Department of Hematology, A.S.L. n° 1, SS. Annunziata Hospital of Sassari, for having performed plasmapheresis on patients.

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    Presented in part at the 14° National Congress of the Italian Burns Society, SIUst, Milano, 31 May–1 June 2001 and at the Summer Meeting of the British Association of Plastic Surgeons, Newport, South Wales, 2–4 July, 2003.

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