Necrotizing Soft Tissue Infections

The LRINEC Score-An Indicator for the Course and Prognosis of Necrotizing Fasciitis?

Background: The Laboratory Risk Indicator for Necrotizing Fasciitis score (LRINEC) is a simple tool used to support early diagnosis of Necrotizing Fasciitis (NF). The aim of this study was to investigate whether the LRINEC is suitable as a progression and prognosis parameter in patients with NF. Methods: In this retrospective study, laboratory data of 70 patients with NF were analyzed. The LRINEC was calculated for every patient at the time of hospital admission and postoperatively after surgical interventions. Furthermore, the LRINEC was examined as a prognostic factor for survival. Results: The overall lethality of our series was 20 out of 70 (28.6%). A highly significant LRINEC decrease was found for serial debridements. The largest decrease was observed after the first debridement. There was a significant difference between the initial LRINEC of deceased and surviving patients. A cut off value of >6.5 (7 LRINEC points) resulted in an optimal constellation of sensitivity (70%) and specificity (60%) to predict lethality in patients with NF. Conclusions: The LRINEC significantly decreases after surgical debridement. An initial LRINEC equal or greater than seven is an independent prognostic marker for lethality and can help to identify high-risk patients.

Skin and Soft Tissue Infections: A Case of Necrotizing Fasciitis

Necrotizing fasciitis is a rapidly progressing soft tissue infection associated with a high rate of mortality. Vibrio vulnificus, a gram-negative bacillus found in warm seawater, is a rare but serious cause of necrotizing fasciitis. Definitive treatment is often delayed because of the vague clinical manifestations associated with the early stages of the disease. Delays in diagnosis are directly associated with increased mortality. Because infection with V. vulnificus progresses more rapidly than other causes of necrotizing fasciitis, patients presenting with soft tissue symptoms and who have been in contact with raw seafood or seawater should be considered at high risk for V. vulnificus-associated necrotizing fasciitis. Health care providers in northern and inland areas must be aware of patients who have recently traveled to regions where V. vulnificus is more common, such as warm coastal regions. Early fasciotomy, debridement, and culture-directed antimicrobial therapy are essential to improve survival. The case presented in this report highlights the importance of early diagnosis of V. vulnificus-associated necrotizing fasciitis.