Pointers

• Aggressive Surgery Essential
• Immediate Surgical Consultation
• Death Due to Delay
• Aggressive Early Surgery
• Delay Occurs Commonly
• Prompt Surgical Evaluation
• Both Severity and Delay
• Postoperative Antibiotic Errors

Aggressive Surgery Essential

Unique Identifier: 20087753
Author Urschel JD
Institution Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
Title Necrotizing soft tissue infections.
Source Postgrad Med J 1999 Nov;75(889): p645-9
ISSN 0032-5473
Abstract

Necrotizing soft tissue infections are a group of highly lethal infections that typically occur after trauma or surgery. Many individual infectious entities have been described, but they all have similar pathophysiologies, clinical features, and treatment approaches. The essentials of successful treatment include early diagnosis, aggressive surgical debridement, antibiotics, and supportive intensive treatment unit care. The two commonest pitfalls in management are failure of early diagnosis and inadequate surgical debridement. These life-threatening infections are often mistaken for cellulitis or innocent wound infections, and this is responsible for diagnostic delay. Tissue gas is not a universal finding in necrotizing soft tissue infections. This misconception also contributes to diagnostic errors. Incision and drainage is an inappropriate surgical strategy for necrotizing soft tissue infections; excisional debridement is needed. Hyperbaric oxygen therapy may be useful, but it is not as important as aggressive surgical therapy. Despite advances in antibiotic therapy and intensive treatment unit medicine, the mortality of necrotizing soft tissue infections is still high. This article emphasizes common treatment principles for all of these infections, and reviews some of the more important individual necrotizing soft tissue infectious entities.

Immediate Surgical Consultation

Unique Identifier: 99383713
Author Fink S; Chaudhuri TK; Davis HH
Institution Veterans Affairs Medical Center, Hampton, VA, USA.
Title Necrotizing fasciitis and malpractice claims.
Source South Med J 1999 Aug;92(8): p770-4
ISSN 0038-4348
Abstract

BACKGROUND: Necrotizing fasciitis (NF) is an aggressive bacterial infection of the superficial fascia and subcutaneous tissues that is increasing in incidence. The high toll exacted by this illness provides a setting for malpractice claims. METHOD: We reviewed 180 consecutive malpractice claims submitted by attorneys for medical expert review between 1987 and late 1997. Four cases involved NF. RESULTS: Alleged failure to obtain timely surgical consultation was the basis for three claims, and alleged failure to prevent NF by proper nursing care was the basis for the fourth. Three cases were closed and one was settled. CONCLUSIONS: The cornerstone of risk management for a clinical presentation compatible with NF is immediate surgical consultation, with other diagnostic steps a secondary consideration.

Death Due to Delay

Unique Identifier: 98354404
Author Adant JP; Bluth F; Fissette J
Institution Department of Plastic Surgery, University Hospital Sart Tilman, Liege, Belgium.
Title Necrotizing fasciitis: a life-threatening infection.
Source Acta Chir Belg 1998 Jun;98(3): p102-6
ISSN 0001-5458
Abstract

Necrotizing fasciitis is a rapidly progressing, synergistic bacterial infection of fascia with a reported average mortality of about 40%. Fournier's disease, necrotizing fasciitis of the genital sphere, is also included in this study. Seven patients were studied over a one-year period between May 1991 and October 1992. Most commonly, they were infected by perineal diseases, medical procedures and cutaneous ulcers. The local clinical signs are cellulitis, oedema, blisters, necrosis and crepitus; general septic symptoms may also be present. Associated chronic diseases were present in 4 patients. Three infections were polymicrobial. Control of this potentially lethal soft-tissue infection is based on early clinical diagnosis, timely, wide surgical debridements and appropriate antibiotic treatment. The overall mortality rate was 1 of 7 (14%). Death was due to persistent wound sepsis and systemic septic complications, but mainly to delay in surgical treatment. The presence of chronic debilitating diseases (diabetes, alcohol abuse, renal insufficiency, ...) contribute to increase rate of both local and systemic infection.

Aggressive Early Surgery

Unique Identifier: 98246863
Author Bilton BD; Zibari GB; McMillan RW; Aultman DF; Dunn G; McDonald JC
Institution Department of Surgery, Louisiana State University Medical School- Shreveport, USA.

Title Aggressive surgical management of necrotizing fasciitis serves to decrease mortality: a retrospective study.
Source Am Surg 1998 May;64(5): p397-400; discussion 400-1
ISSN 0003-1348
Abstract

Necrotizing fasciitis is an aggressive soft-tissue infection that in the past has carried a significant mortality rate. One of the most important determinants of outcome is recognition of the disease process. This is followed by aggressive resuscitation measures and radical debridement at the initial operation to control the infectious spread at the outset. The objective of this study is to help reveal the benefits of aggressive early surgical debridement in the treatment of necrotizing fasciitis. A retrospective review of the medical records of 68 patients between the years 1980 and 1996 with the diagnosis of necrotizing fasciitis was performed. The patients were assigned to two groups, Group A (21; 31%), who had delay in therapy or inadequate preliminary therapy and Group B (47; 69%), who underwent aggressive surgical debridement from the outset. Concomitant disease processes were noted. The medical records of 68 patients were studied. Age ranged from 13 to 67 (mean, 52) years of age. There were 38 (56%) females, 21 (64%) of the patients were African-American, 24 (73%) of the patients had concomitant disease processes, 29 (42%) of the patients had a history of tobacco use, 11 (16%) of the patients had a history of alcohol consumption, and 11 (16%) of the patients were obese. Mortality in Group A was 8 of 21 patients (38%). Mortality in Group B was 2 of 47 patients (4.2%). The difference in mortality was found to be statistically significant (P = 0.0007). Early recognition and expeditious initial wide excision and debridement along with appropriate antibiotic coverage and support of systemic effects of necrotizing fasciitis serve to decrease morbidity and mortality. We believe the above is an absolute necessity followed by frequent washing and minor debridement of the wound until granulating tissue is observed. This can then be followed by procedures to close/cover the surgical defect (i.e., split-thickness skin grafts or various coverage flaps).

Delay Occurs Commonly

Unique Identifier: 97253188
Author Stone DR; Gorbach SL
Institution Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA.
Title Necrotizing fasciitis. The changing spectrum.
Source Dermatol Clin 1997 Apr;15(2): p213-20
ISSN 0733-8635
Abstract

Necrotizing fasciitis, by nature of its high inoculum of aggressive bacteria and the depth of the fascial involvement, is one of the most serious infections known to humans. Rapid tissue destruction of skin and fascia, along with bacteremia, is common. The mortality for this disease is much higher than that for cellulitis. Unfortunately, delay in diagnosis occurs commonly. The emergence of toxic shock strains of Streptococcus leading to fasciitis with organ dysfunction makes it necessary to make a rapid diagnosis and institute early antibiotic and surgical interventions.

Prompt Surgical Evaluation

Unique Identifier: 96135088
Author Lille ST; Sato TT; Engrav LH; Foy H; Jurkovich GJ
Institution Department of Surgery, Harborview Medical Center, University of Washington School of Medicine, Seattle 98104, USA.
Title Necrotizing soft tissue infections: obstacles in diagnosis.
Source J Am Coll Surg 1996 Jan;182(1): p7-11
ISSN 1072-7515
Abstract

BACKGROUND: This study was done to identify obstacles in the early diagnosis and treatment of necrotizing soft tissue infections. STUDY DESIGN: A ten-year retrospective case series was analyzed. RESULTS: Data from 29 patients were analyzed. Among patients undergoing early operation within 24 hours of admission (n = 17) there was one death (6 percent mortality rate); survivors averaged 2.9 operations per patient. By comparison, of patients with delayed operation (n = 12) three died (25 percent mortality rate) and there were 3.6 operations per patients. Positive fine-needle aspiration (FNA) of suspicious lesions, demonstrating either pus or bacteria by Gram's stain, led to early operation in 80 percent of patients tested. Patients with soft tissue gas on radiographs were more likely to undergo early operation (58 percent). Delayed operation was more common in the absence of radiographic findings. All patients admitted to nonsurgical services had delayed operations. CONCLUSIONS: Suspected necrotizing soft tissue infections require prompt surgical evaluation and early operative exploration. Early operation with definitive surgical therapy initiated within 24 hours of admission is associated with decreased mortality rates. Negative FNA findings, nondiagnostic radiographs, and admission to a nonsurgical service correlate with delay in definitive operative intervention.

Both Severity and Delay

Unique Identifier: 96057596
Author Carmeli Y; Ruoff KL
Institution Medical Services, Massachusetts General Hospital, Boston 02114, USA.
Title Report of cases of and taxonomic considerations for large-colony-forming Lancefield group C streptococcal bacteremia.
Source J Clin Microbiol 1995 Aug;33(8): p2114-7
ISSN 0095-1137
Abstract

Traditionally, group C streptococci include four species: Streptococcus equisimilis, S. zooepidemicus, S. equi, and S. dysgalactiae, the first three of which are group C beta-hemolytic streptococci (GCBHS). However, many of the beta-hemolytic streptococci carrying Lancefield group C antigen isolated from clinical specimens are S. milleri. These organisms can be differentiated by colony size. We retrospectively collected data concerning large-colony-forming GCBHS bacteremia that occurred during a period of 8 years at the Massachusetts General Hospital. A total of 222 cases of beta-hemolytic streptococcal bacteremia were identified; data on the Lancefield grouping were available in 192 cases: 45 cases (23.6%) were group A, 96 cases (50%) were group B, 7 cases (3.6%) were group C (large colony forming), and 44 cases (22.9%) were group G. The medical records for cases of large-colony-forming GCBHS bacteremia were reviewed. In one case, the isolate was thought to be a contaminant; the other six cases are reported (five males and one female; mean age, 55 years). All patients had severe underlying conditions, and none had a history of exposure to animals. The clinical syndromes included two cases of cellulitis and one case each of endocarditis, myocardial infarction complicated by infection, pneumonia, and myofasciitis. The diagnoses for two patients with endovascular infections were delayed. Three of the six patients had fatal outcomes, and other two, after prolonged hospitalization, were transferred to a long-term rehabilitation center. We concluded that the severe outcomes reflect delay in diagnosis and treatment as well as the severity of the underlying diseases. The taxonomy of GCBHS is discussed.(ABSTRACT TRUNCATED AT 250 WORDS).

Postoperative Antibiotic Errors

Twenty-eight cases of necrotizing fasciitis (NF) were treated in 27 patients. Most commonly these infections were caused by perineal disease, operative procedures, and cutaneous ulcers. Associated chronic diseases were present in 21 patients. Postoperative fasciitis occurred when prophylactic antibiotics were omitted or used inappropriately during clean-contaminated or contaminated procedures and when primary skin closure was done in the presence of intra-abdominal contamination. All but four infections were polymicrobial. The overall mortality rate was 73% (20 of 27). Death was due to persistent would sepsis in nine, systemic septic complications despite apparent local control of the infection in nine, and myocardial infarction in two patients. Five of seven survivors had NF limited to one region (leg, perineum, or abdomen). Only 2 of 15 patients survived when more than one debridement was necessary to control ongoing wound necrosis. Eleven of 12 patients who had a delay in treatment for more than 12 hours died. These results suggest that prompt recognition and treatment of NF are essential for survival. The presence of chronic debilitating diseases may contribute to the uncontrollable nature of both local and systemic infection, further emphasizing the need for early diagnosis. Postoperative fasciitis is potentially preventable by strict adherence to the principles for management of contaminated procedures.