eMedicine Specialties > Emergency Medicine > Genitourinary
Fournier Gangrene: Follow-up
Updated: Mar 4, 2008
Follow-up
Further Inpatient Care
- The consulting urologist or surgeon may order further diagnostic tests, including cystourethroscopy, retrograde urethrography, sigmoidoscopy, barium enema, tissue biopsy, and examination under anesthesia.
- Urinary and/or fecal diversion (eg, suprapubic catheterization, colostomy) may be required depending on the source of infection.
- Multiple debridements in the operating room may be required to effectively remove all necrotic tissue. Patients with Fournier gangrene undergo an average of 2-4 operative procedures during their initial hospitalization.
- Orchidectomy and/or penectomy rarely are required.
- Hyperbaric oxygen therapy (HBO) has been used as an adjuvant to surgical and antimicrobial therapy, especially in patients for whom conventional treatment has failed, in those with documented clostridial involvement, or in those with myonecrosis or deep tissue involvement. HBO is postulated to reduce systemic toxicity, prevent extension of necrotizing infection, and inhibit growth of anaerobic bacteria. However, in one series, there was actually a trend toward increased mortality in patients undergoing HBO therapy.2 (This trend may have been related to selection bias). Decisions regarding hyperbaric therapy must be made on an individual basis and should be an adjuvant to debridement and antimicrobial therapy.
- A Fournier gangrene severity index score has been developed, which has been shown to aid in prognosis. A score from 0 to 4 is assigned to each of the following parameters3 : temperature; heart rate; respiratory rate; serum sodium, potassium, bicarbonate, and creatinine levels; hematocrit; and white blood cell count. Mortality is associated with a total score >9.
- Unprocessed honey, applied directly to the surface of the wounds, has been reported by some authors to enzymatically debride, sterilize, and dehydrate wounds and to improve local tissue oxygenation and re-epithelialization. This treatment is controversial, and no current studies support this practice.
- One published case report advocates irrigation of the perineum with superoxidized water as well as application of gauze soaked in zinc peroxide and hydrogen peroxide.
Transfer
- Fournier gangrene is a true surgical emergency. If the initial facility does not have the capability to provide operative therapy in a timely fashion, arrange for transfer once the patient has been stabilized and resuscitative efforts have begun.
- Patients often require a multidisciplinary team, including a urologist, general surgeon, and intensivist. Transfer to a tertiary facility may be required if these resources are not available at the initial facility.
Complications
- Progression to single-organ or multiorgan failure may occur, usually as a result of gram-negative sepsis and typically is the cause of death. Examples include acute renal failure and adult respiratory distress syndrome.
- Large scrotal, perineal, penile, and abdominal wall skin defects may require reconstructive procedures.
- Fatal tetanus associated with Fournier gangrene has been reported in the literature.
Prognosis
- Factors associated with an improved prognosis include age younger than 60 years, localized clinical disease, absence of systemic toxicity, and sterile blood cultures.
- Surprisingly, diabetes and HIV infection are not associated with higher mortality.
- The scrotum has a remarkable ability to heal and regenerate once the infection and necrosis have subsided.
Patient Education
Encourage diligent hygiene of the perineum, especially in immunocompromised patients or those with other risk factors for the disease.
Miscellaneous
Medicolegal Pitfalls
- Failure to realize that cutaneous findings often underestimate the extent of underlying disease
- Failure to initiate early broad-spectrum antibiotics
- Failure to obtain immediate urologic consultation or to transfer the patient to an appropriate facility if such resources are not available at the current facility
The authors and editors of eMedicine gratefully acknowledge the contributions of previous authors, Todd Thomsen, MD, and Eric Legome, MD, to the development and writing of this article.
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References
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Further Reading
Keywords
Fournier gangrene, Fournier's gangrene, gangrene of the penis and scrotum, polymicrobial necrotizing fasciitis, infection of superficial perineal fascia
Follow-up: Fournier Gangrene