Necrotizing Soft-Tissue Infections

Fournier's gangrene as a rare complication in patient with uncontrolled type 2 diabetes treated with surgical debridement: A case report and literature review

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Fournier’s gangrene (FG) is a rare disease which usually affects men. It is characterized by progressive necrotizing fasciitis.

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A 66-year-old man with uncontrolled type 2 diabetes, obesity with BMI 38, chronic kidney failure and chronic heart failure, reported the onset of symptoms about 14 days before his hospitalization, without consulting any doctor due to Covid-19 pandemic.

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The combination therapy of surgical debridement and antibiotics infusion was effective.

Introduction

Fournier’s gangrene is a potentially fatal emergency condition, supported by an infection of perineal and perianal region, characterized by necrotizing fasciitis with a rapid spread to fascial planes. FG, usually due to compromised host, may be sustained by many microbial pathogens.

Case report

A 66-year-old man, with a history of uncontrolled type 2 diabetes, obesity with BMI 38, chronic kidney failure and chronic heart failure, was admitted to the Emergency Department with a large area of necrosis involving the perineal and perianal regions.

Discussion

Fournier’s gangrene is favoured by hypertension, obesity, chronic alcoholism, renal and heart failure. Generally, Fournier’s gangrene needs other procedures in addition to wound debridement such as colostomy, cystostomy, or orchiectomy.

Conclusion

We report a case of FG found as complication in a patient with uncontrolled type 2 diabetes, treated with effective combination therapy with surgical debridement and antibiotics infusion.

Fournier Gangrene: A Review for Emergency Clinicians

BACKGROUND

Fournier gangrene (FG) is a rare, life-threatening infection that can result in significant morbidity and mortality, with many patients requiring emergency department (ED) management for complications and stabilization.

OBJECTIVE

This narrative review provides an evidence-based summary of the current data for the emergency medicine evaluation and management of FG.

DISCUSSION

Although originally thought to be an idiopathic process, FG has been shown to have a strong association for male patients with advanced age and comorbidities affecting microvascular circulation and immune system function, most commonly those with diabetes or alcohol use disorder. However, it can also affect patients without risk factors. The initial infectious nidus is usually located in the genitourinary tract, gastrointestinal tract, or perineum. FG is a mixed infection of aerobic and anaerobic bacterial flora. The development and progression of gangrene is often fulminant and can rapidly cause multiple organ failure and death, although patients may present subacutely with findings similar to cellulitis. Laboratory studies, as well as imaging including point-of-care ultrasound, conventional radiography, and computed tomography are important diagnostic adjuncts, though negative results cannot exclude diagnosis. Treatment includes emergent surgical debridement of all necrotic tissue, broad-spectrum antibiotics, and resuscitation with intravenous fluids and vasoactive medications.

CONCLUSIONS

FG requires a high clinical level of suspicion, combined with knowledge of anatomy, risk factors, and etiology for an accurate diagnosis. Although FG remains a clinical diagnosis, relevant laboratory and radiography investigations can serve as useful adjuncts to expedite surgical management, hemodynamic resuscitation, and antibiotic administration.

Management of equivocal (early) Fournier's gangrene

BACKGROUND

Fournier's gangrene (FG) is an acute progressive necrotizing fasciitis of the genital area and perineum with possible extension to the abdominal wall. Surgical debridement is the gold standard management modality of established patients. Equivocal (early) FG represents a challenge in diagnosis. The objective of this study was to compare conservative management and early exploration in cases of equivocal (early) FG.

METHODS

This was an observational study where data of all patients diagnosed as early FG in our departments over 4 years (2011-2015) were enrolled. Patients were divided into two groups: group 1 with conservative treatment, and group 2 managed with urgent exploration with longitudinal hemiscrotal incision starting from external inguinal ring. All patients' demographics, vital signs, laboratory finding and clinical findings were reported.

RESULTS

A total of 28 patients were enrolled in the study. Group 1 was managed with conservative treatment (17 patients) and group 2 underwent urgent exploration (11 patients). Overall, four patients (23.5%) out of 17 patients of group 1 showed a good response to conservative management without any surgical debridement. A total of 13 patients (76.5%) developed gangrenous discoloration and needed surgical debridement later. In group 2, four patients (36.4%) underwent scrotal exploration and release incision only without debridement and showed an excellent clinical outcome. A total of four patients (36.4%) underwent debridement with excision of doubtful deep subcutaneous and fascial tissues. The remaining three patients (27.2%) underwent debridement of necrotic fascia. The hospital stay was significantly shorter in group 2 patients than group 1 (7.5 ± 3.75 versus 13.4 ± 5.19 days p < 0.05). The mean number of debridement sessions was 3.74 ± 0.69 in group 1 versus 1.82 ± 0.34 in group 2.

CONCLUSIONS

Early exploration and debridement in equivocal (early) FG has a better clinical outcome with reduced hospital stay and number of debridement sessions than conservative treatment with delayed debridement.

Contemporary diagnosis and management of Fournier's gangrene

Fournier's gangrene, an obliterative endarteritis of the subcutaneous arteries resulting in gangrene of the overlying skin, is a rare but severe infective necrotizing fasciitis of the external genitalia. Mainly associated with men and those over the age of 50, Fournier's gangrene has been shown to have a predilection for patients with diabetes as well as people who are long-term alcohol misusers. The nidus for the synergistic polymicrobial infection is usually located in the genitourinary tract, lower gastointestinal tract or skin. Early diagnosis remains imperative as rapid progression of the gangrene can lead to multiorgan failure and death. The diagnosis is often made clinically, although radiography can be helpful when the diagnosis or the extent of the disease is difficult to discern. The Laboratory Risk Indicator for Necrotizing Fasciitis score can be used to stratify patients into low, moderate or high risk and the Fournier's Gangrene Severity Index (FGSI) can also be used to determine the severity and prognosis of Fournier's gangrene. Mainstays of treatment include rapid and aggressive surgical debridement of necrotized tissue, hemodynamic support with urgent resuscitation with fluids, and broad-spectrum parental antibiotics. After initial radical debridement, open wounds are generally managed with sterile dressings and negative-pressure wound therapy. In cases of severe perineal involvement, colostomy has been used for fecal diversion or alternatively, the Flexi-Seal Fecal Management System can be utilized to prevent fecal contamination of the wound. After extensive debridement, many patients sustain significant defects of the skin and soft tissue, creating a need for reconstructive surgery for satisfactory functional and cosmetic results.

Necrotizing cervical fasciitis: Prognosis based on a new grading system

We conducted a 10-year retrospective study to determine the prognosis of necrotizing cervical fasciitis (NCF). Our study population included 38 patients-32 males and 6 females, aged 10 months to 70 years (mean: 55 yr)-who had presented for management of NCF at our tertiary care hospital between Jan. 1, 2000, and Dec. 31, 2009. We classified each case into four categories based on the duration of disease prior to presentation, the severity of disease, and other factors that influence outcomes. We found that the most important factor in determining prognosis was the time interval between the onset of NCF and subsequent presentation for specialist or surgical intervention. Patients with a higher grade of NCF had longer hospital stays. Although aggressive surgical and medical intervention is the gold standard for the management of NCF, many of our patients presented with a relatively healthy appearing wound, which could mislead the evaluating clinician and delay prompt management. We believe that our new grading system will help obviate this problem and make clinicians more vigilant when faced with a new case of necrotizing fasciitis.

Spontaneous clostridial myonecrosis after pregnancy - emergency treatment to the limb salvage and functional recovery: a case report

Clostridial myonecrosis (CM) is a rare, life threatening necrotizing infection of a skeletal muscle caused by Clostridium perfringens in the majority of cases. The diagnosis may be difficult because of few diagnostic and cutaneous signs early in its course. Standard therapy involves surgical debridements of a devitalized tissue and high-dose organism-specific antibiotic therapy. The hyperbaric oxygen has also showed its usefulness in the treatment of these infections. Autograft systems as tissue replacement, based on bioengineered materials, have been demonstrated to be safe and effective treatments for chronic wounds and a suitable physiotherapy is recommended for the recovery of functional impairments of upper extremities. We present a rare case of CM of right upper limb treated with a combination of standard treatments and new techniques.

Clinical and microbiological spectrum of necrotizing fasciitis in surgical patients at a Philippine university medical centre

OBJECTIVE

The study describes the clinical characteristics, bacteriology and risk factors for mortality of patients with necrotizing fasciitis (NF), seen in a university medical centre.

METHODS

The medical charts of NF patients admitted to the institution from January 2004 to July 2007 were retrieved and reviewed retrospectively.

RESULTS

The majority of the 67 patients included in the study presented with localized nonspecific inflammatory manifestations: tenderness (94%), warmth (86%), oedema (76%), skin necrosis (75%), and ulceration (68%). Diabetes mellitus (22%) was the most common predisposing medical condition. The most frequent isolates were Escherichia coli (44%), Acinetobacter baumannii (19%), Staphylococcus aureus (15%) and Enterococcus faecium (15%). Overall mortality rate was 36%. Risk factors significantly associated with mortality were truncal involvement (p = 0.034), leukocytosis (p = 0.038), acidosis (p = 0.001), hypoalbuminaemia (p = 0.004), hypocalcaemia (p = 0.000) and hyponatraemia (p = 0.023). Logistic regression analysis revealed acidosis [p < 0.05, odds ratio (OR) = 9] and hypoalbuminaemia (p < 0.05, OR = 14) as significant independent risk factors for mortality.

CONCLUSION

The identified risk factors can inform clinicians of increased mortality risks for certain patients with NF. They should serve as a trigger for more aggressive surgical and critical care, and antimicrobial therapy for these patients.

Integrated clinical care pathway for managing necrotising soft tissue infections

BACKGROUND

Necrotising soft tissue infections (NSTI) are relatively common infections with high morbidity and mortality rate, as they often present late in their course. Quick and aggressive surgical treatment improves survival and decreases hospital stay.

MATERIALS AND METHODS

All patients with NSTI managed at our centre from June 2007 to January 2009 were included in this prospective study. We evaluated various parameters like age, co-morbidities, biochemical parameters, time interval between admission and first operative intervention, against duration of hospital stay and out come of the case.

RESULTS

Fifty-four patients with NSTI were admitted and treated during the study period. Male to female ratio was 6:1. Mean time interval between admission and operative intervention was 6 hours. Mean period of hospitalisation was 53 days and we had limb salvage rate of 100% and one mortality (1.85%). Diabetes mellitus was the most common co-morbid condition and Staphylococcus aureus the most common isolate. Presence of leucocytosis, hyponatraemia, hypoalbuminaemia, anaemia and deranged renal functions were found to be poor prognostic factors.

CONCLUSION

Late and varied presentation is the rule rather than exception with NSTI. Early recognition of the condition, with emergency operative intervention and repeated debridement by a dedicated surgical team, is the key to patient survival and limb salvage.

Clostridium septicum sepsis and colorectal cancer - a reminder

Background

Spontaneous clostridium septicum infections are rare and are associated with a high mortality. Association of clostridium infection with colorectal malignancies have been previously reported and most cases are described in tumours of the ascending colon. We report our experience of clostridium septicum infection in the presence of tumour perforation in a series of two patients as a reminder of its association with sepsis in the presence of colorectal malignancy.

Case Presentation

We isolated clostridium septicum infection in a series of two patients admitted as emergencies. One patient was found to have a perforated caecal tumour intraoperatively whilst the other had a perforated rectal tumour. The clinical outcome and management of each case are reported and underlying reasons for variations in outcome are discussed.

Conclusion

Although uncomman, the possibility of clostridium septicum sepsis should be borne in mind in patients who present with underlying malignancy and have sepsis. The cumulative effect of sepsis and malignant perforation is associated with a high morbidity and mortality. Awareness and early diagnosis of clostridium septicum may improve the prognosis of what is usually regarded as a fatal infection.

Fournier's gangrene: is it scrotal gangrene?

INTRODUCTION

Fournier's gangrene was originally described as scrotal gangrene in young males. Today, it is generally accepted as synergistic necrotizing fasciitis of perineal, genital, or perianal regions, and the epidemiologic data have changed. However, there are still limited data about females due to the lack of female patients, even in large case series.

METHODS

A retrospective review of the medical records of all patients who received surgery for emergency conditions over the past 22 years was performed to identify patients with Fournier's gangrene. Data from these patients were then reviewed to determine the age, gender, etiology, causative bacteria, predisposing factors, treatment modalities, length of hospital stay, and morbidity and mortality rates associated with Fournier's gangrene. Data were evaluated using multivariate analyses.

RESULTS

Sixty-five patients (20 female) were identified with the diagnosis of Fournier's gangrene. The mean age was 50.8 years. The most common etiology was hemorrhoidectomy in male and perianal abscess in female patients. The most commonly isolated microorganism in both male and female patients was Escherichia coli. Twenty-nine patients had diabetes mellitus, which was the most common predisposing factor. Mean hospitalization time was 24.4 days and the overall mortality was 27.70%.

CONCLUSION

Fournier's gangrene is still an important disease with high mortality rates in spite of the developments in intensive care units and new-generation antibiotics. It seems that there are no major differences between male and female patients in the characteristics of the condition.

Aggressive management of necrotizing fasciitis through a multidisciplinary approach using minimal surgical procedures: a case report

Necrotizing fasciitis is an aggressive, destructive infection of the soft tissue and fascia and is a life-threatening surgical emergency. A case study is presented of necrotizing fasciitis in the right lower extremity of a 53-year-old male resident of a long-term skilled nursing facility. Limb salvage was achieved through a multidisciplinary approach with early surgical management and aggressive postoperative management. Through 3 surgical procedures, the combined efforts of podiatric surgery, orthopaedic surgery, general/trauma surgery, and infectious disease provided early wound closure and limb salvage. An aggressive multidisciplinary approach to the management of necrotizing fasciitis in the lower extremity is necessary for limb salvage. Use of this multidisciplinary approach will minimize the number of surgical procedures and decrease the potential morbidity and mortality seen in patients with this infection.

Clostridium septicum infections in children: a case report and review of the literature

Clostridium myonecrosis is a rare and deadly infection that progresses very rapidly; thus, prompt diagnosis and treatment is vital. In adults, clostridial myonecrosis used to be a well-known complication of war wounds. Today, it is usually seen in settings of trauma, surgery, malignancy, skin infections/burns, and septic abortions. More recently, cases of nontraumatic or spontaneous clostridial myonecrosis have been reported in both adults and children. Clostridium perfringens and Clostridium septicum are responsible for the majority of the clinically relevant infections. Higher mortality rates are seen when C septicum is the causative agent. Here we present a child who survived a severe case of C septicum myonecrosis involving both abdominal and thoracic cavities. This rare infection has a high mortality rate and might be easily misdiagnosed in children, even by experienced clinicians, because of its nonspecific presentation. We also review all reported pediatric cases of C septicum infection and myonecrosis and discuss the surgical and medical interventions associated with improved survival. We identified a total of 47 cases of C septicum infection; of these, 22 (47%) were cases of C septicum associated with myonecrosis. Several factors, if available, were analyzed for each case: age, gender, infection location, previous diagnoses, presenting signs and symptoms, neutropenia, gross pathology of the colon, antibiotic use, surgical intervention, and final outcome. We found that conditions related with C septicum infection in children can be grouped into 3 major categories: patients with neutrophil dysfunction; patients with associated bowel ischemia; and patients with a history of trauma. Malignancies were found in 49% of the cases, cyclic or congenital neutropenia in 21%, hemolytic-uremic syndrome in 11%, structural bowel ischemia in 4%, and local extremity trauma in 6%. In addition, 6% of the cases had no known underlying disorder. Abdominal symptoms including vomiting, diarrhea, blood per rectum, abdominal pain, anorexia, and/or acute abdomen, were reported in 85% of the children. Fever was also a common finding. The mainstay of treatment for C septicum infection was parenteral antibiotics and/or surgical intervention. The mortality rate for children with C septicum infection and myonecrosis was 57% and 59%, respectively. Although 82% of all cases received antibiotics, only 43% underwent therapeutic surgical intervention. Several clinical factors were found to be associated with improved survival. Only 35% of the children with gastrointestinal tract involvement survived, compared with 86% of the children without gastrointestinal tract involvement. The survival rates for other conditions ranged from 0% to 50%. One hundred percent survival was reported in patients with no previously diagnosed conditions and those with infections resulting from trauma to the extremities. All survivors received antibiotic treatment, compared with only 68% of the nonsurvivors. Most survivors (84%) underwent therapeutic surgical intervention, compared with only 12% of nonsurvivors. Other treatments were used adjunctively, including hyperbaric oxygen, granulocyte colony-stimulating factor, granulocyte transfusions, and intravenous immunoglobulin. C septicum infections in children are often fatal; thus, one needs to have a high index of suspicion in at-risk patients. This review describes who these patients are, their clinical presentation, and the therapeutic strategies associated with improved survival.

Necrotizing Fasciitis in a Postmastectomy Wound

Necrotizing fasciitis is a rare, life-threatening condition, characterized by progressive gangrene of the subcutaneous tissue with subsequent death of the overlying skin. It is associated with a high mortality rate. We describe a patient who developed this condition after elective mastectomy and survived. Necrotizing fasciitis is known to occur in any part of the body, including the breast, and also following any kind of surgery, however, to the best of our knowledge this condition has never been described after a mastectomy. The diagnosis and management algorithm of this condition is discussed.

Necrotising fasciitis: a new management algorithm based on clinical classification

Necrotising fasciitis is a rare infection of the subcutaneous tissues. If untreated, it is invariably fatal, and thus a high index of suspicion for the diagnosis is required. The disease's manifestation can range from a fulminant presentation to a subtle and insidious development. The priority in every case is to proceed to radical surgical debridement. On review of the literature and based on our clinical experience, we propose a new classification based on clinical presentation and suggest an algorithm to facilitate the management of this devastating condition. Increasing awareness should be given to the management of the large wounds resulting from the surgical debridement of necrotising fasciitis.

[Fournier's gangrene: anatomo-clinical features in adults and children. Therapy update]

Fournier's gangrene is a skin infectious-necrotising process in the peri-neogenital area affecting males, usually in their sixties or seventies. Isolated flora from cultures of the necrotic lesion is commonly multi-microbial. In a majority of cases both aerobic and anaerobic micro-organisms are found in the cultures, Escherichia coli being the most commonly identified germ. Although considered in the past an idiopathic condition, in most patients today a genitourinary, anorectal or dermal triggering factor can be identified. There are a series of systemic host debilitating disorders such as diabetes mellitus, chronic alcohol abuse, and malignant neoplasia that are associated to this condition and may be considered risk factor to suffer this disease. Fournier's gangrene in children show specific bacteriological, pathogenic, clinical, therapeutic and prognostic features that distinguish it from that in adults. The most extensively accepted management for this condition includes therapy with broad-spectrum parenteral antibiotics and early and aggressive surgical debridement of the necrotic areas. Mortality continues to be high, ranging between 10-80% in the various series. Finally, a group of 7 patients with Fournier's gangrene is analyzed (1991-1998) aiming to establish a comparison between our results and those seen in recent series.

Massive infectious soft-tissue injury: diagnosis and management of necrotizing fasciitis and purpura fulminans

LEARNING OBJECTIVES

After studying the article, the participant should be able to: 1. Describe the most common bacteriology of necrotizing fasciitis and purpura fulminans. 2. Describe the "finger test" in the diagnosis of necrotizing fasciitis. 3. Discuss the three presentation patterns of necrotizing fasciitis. 4. Discuss the pathophysiology of acute infectious purpura fulminans. 5. Discuss the treatment strategies for necrotizing fasciitis and purpura fulminans, including the use of artificial skin substitutes. Necrotizing fasciitis and purpura fulminans are two destructive processes that involve skin and soft tissues. The plastic and reconstructive surgeon may frequently be called on for assistance in the diagnosis, treatment, and/or reconstruction of patients with these conditions. Understanding the natural history and unique characteristics of these processes is essential for effective surgical management and favorable patient outcome. A comprehensive review of the literature pertaining to these two conditions is presented, outlining the different pathophysiologies, the patterns of presentation, and the treatment strategies necessary for successful management of these massive infectious soft-tissue diseases.

C, Wahl WL. Necrotizing Soft Tissue Infections: A Surgical Disease

Despite advances in antibiotics and infection control practices necrotizing fasciitis is still a potentially lethal disease. We reviewed 37 patients with necrotizing fasciitis to identify prognostic factors indicating outcome. Overall mortality was 24 per cent. Mortality was significantly increased for elderly patients. Solid-organ transplant recipients also represented a subset of patients with increased mortality. Most infections were polymicrobial. There was no Clostridium perfringens cultured. Rapid diagnosis and treatment with surgical debridement remains the cornerstone of therapy.

Fournier's gangrene: changing face of the disease

PURPOSE

Our experience with ten cases of Fournier's gangrene prompted us to review the related literature to highlight the current status of the disease.

METHODS

Data from ten patients with the diagnosis of Fournier's gangrene treated at our center from January 1997 until December 1998 were analyzed. These patients were treated by aggressive resuscitation, triple antibiotics, and urgent surgery. The English-language medical literature for the past 30 years was reviewed.

RESULTS

The epidemiologic features of our patients were similar to those reported in other recent studies. Mortality rate was 20 percent. Currently, the disease affects both genders and a wide range of ages, has a more insidious onset than in the past, and is not idiopathic. Associated systemic disorders (diabetes, alcoholism, and immunosuppression) are common. Perianal infection is the commonest cause and is associated with more moribund features.

CONCLUSION

The epidemiology of Fournier's gangrene is changing from its original description. Population aging worldwide--as a result of improving health care--and therefore the increasing prevalence of associated medical disorders may explain these changes. These factors may also explain the consistently high mortality rate during more recent years, masking any survival benefits from improved medical care. Better understanding of the pathophysiology has reduced the ratio of idiopathic cases to a minimum.

Fournier's gangrene in a modern surgical setting: improved survival with aggressive management

OBJECTIVE

To examine the outcome of 23 consecutive patients with Fournier's gangrene.

PATIENTS AND METHODS

Patients' charts were reviewed retrospectively from all those treated for Fournier's gangrene between July 1994 and July 1997 at the UCLA affiliated hospitals.

RESULTS

Twenty-three patients were identified (mean age 51.7 years, range 13-71). The aetiologies included perirectal abscess (43%), urethral stricture (30%), scrotal abscess (21%) and unknown (4%). Predisposing factors included diabetes mellitus (43%), steroids or chemotherapy (21%), alcohol abuse (43%), malignancy (26%) and radiation therapy (9%). All 23 patients initially received wide debridement and placement of a percutaneous suprapubic tube. At the time of the first surgery, total scrotectomy was required in all, colostomy in 17% and penectomy in 4%. An additional 35% required eventual colostomy and an additional 9% required a penectomy. Patients underwent repeat debridement a mean of 2.5 times; the overall survival was 96%.

CONCLUSION

Survival can be improved in patients with Fournier's gangrene by combining aggressive surgical and medical management. The keys to successful outcome included a high index of suspicion, prompt fluid resuscitation, rapid initiation of broad-spectrum antibiotics, a multidisciplinary approach, early surgical intervention with radical debridement, haemodynamic support in an intensive care setting, and frequent repeat operative debridement.

Clostridium septicum infection in children with cyclic neutropenia

Atraumatic Clostridium septicum infection is rare in infancy and childhood and is associated with a high mortality rate. Although in adults it has been reported to occur mainly in patients with gastrointestinal malignancy, pediatric cases were always associated with neutropenia. About 70% of the cases were described in children with neutropenia caused by chemotherapy and 30% were found in children with cyclic neutropenia. No case was described in children with other forms of congenital severe neutropenia. We describe three children with cyclic neutropenia and severe Clostridium septicum infection, discuss the various possibilities of causation, and the need for prompt and aggressive treatment of this serious condition.

Necrotizing soft tissue infections of the chest wall

BACKGROUND

Necrotizing soft tissue infections of the chest wall are uncommon, and they have received little discussion in the medical literature.

METHODS

We performed a collective review of the literature to summarize information on etiology, prevention, treatment, complications, and outcome of chest wall necrotizing soft tissue infections. Manual, Medline, and Current Contents searches of the English-language medical literature were done.

RESULTS

There were 9 reported cases of necrotizing soft tissue infection of the chest wall. Eight were complications of invasive procedures and operations. Tube thoracostomy for empyema (4 patients) was the most common antecedent procedure. Excessive soft tissue dissection during chest tube insertion was implicated in the genesis of these infections. Necrotizing infections complicated esophageal operations in 2 patients. Overall mortality was 89%. Only 3 of the 9 patients underwent early and adequate debridement. Chest wall stability and wound reconstruction were problematic in patients who survived the initial septic illness.

CONCLUSIONS

Necrotizing soft tissue infections of the chest wall are highly lethal infections that require urgent and aggressive debridement. Diagnostic delay and inadequate debridement are common reasons for treatment failure. Repetitive surgical debridement is often needed to control sepsis. Wound closure is challenging in patients who survive the initial septic phase of their illness.

Soft tissue infections and the diabetic foot

Soft tissue infections are classified as local or spreading. Spreading soft tissue infections are potentially life-threatening conditions, requiring prompt diagnosis and treatment. The information presented is based on a literature review and the authors' clinical experience. Diagnosis of soft tissue infections is aimed at determining the level of infection (skin, fascia, muscle) and whether necrosis is present. The bacteriology of these infections is varied and is of secondary importance. Treatment of skin infections that have no dead tissue is with antibiotics alone. Infections at the fascial or muscle level and those with necrosis at any level require surgical debridement and adjuvant antibiotics. The feet of diabetic patients are prone to plantar forefoot ulcers associated with tissue destruction and infection. The vast majority are caused by mechanical factors. If local immune defenses are adequate, bacterial colonization occurs without infection. Most diabetic foot ulcers will respond to relief of pressure, which may require total contact casting. Antibiotics and debridement are required in infected or deep ulcers, or when the ulcer does not respond to total contact casting.

Joseph Jones: infection with flesh eating bacteria

A Confederate Army surgeon, Joseph Jones, is generally credited to have provided the first modern description of necrotizing fasciitis, then known as hospital gangrene. This is a soft tissue infection characterized by a rapid and progressive course. In the 1990s, this entity has been popularized by the media as representing infection with "flesh eating bacteria." Certain patients are at particular risk to develop necrotizing soft tissue infections. Those with impaired immunity, diabetes mellitus, and intravenous drug abuse are particularly vulnerable, but these infections can also occur in previously healthy patients. Diagnostic radiographic testing is often helpful, including the use of plain radiographs, computed tomographic (CT) scan and magnetic resonance imaging (MRI). The most frequent infecting bacterial organism is Group A beta-hemolytic streptococcus, and there are indications to suggest that this organism may be acquiring greater virulence. Many infections, however, involve several bacterial pathogens. The keys to successful outcome are early diagnosis and surgical debridement. Fluid resuscitation and administration of broad spectrum antibiotics should be initiated as soon as the diagnosis is suspected.