Hi, thanks for posting your concern in the HCM.
Necrotizing fascitis or flesh eating disease can be due to many bacteria, including Clostridia, Staph., Strepto. etc.
The treatment is definitely based on antibiotic therapy and maintenance of fluid and electrolyte balance, surgical debridement and sometimes
hyperbaric oxygen therapy. But, it is better to give antibiotics based culture sensitivity results of specimen like wound swab and blood.
Prognosis will depend upon the age, general medical condition of the patient, presence or absence of
diabetes, immunity status, renal function, presence and absence of
sepsis etc. As your mother is elderly, prognosis can be worse than a younger patient. However, with rational treatment and judicial use of antimicrobials (antibiotics) both her life and her limb can be saved if the causative organism is not multi-drug resistant.
Therefore, please don't worry. The treatment protocol has been correct.
However, in case you have any further query in future, you can directly ask me questions @ http://www.HealthcareMagic.com/doctors/dr-kaushik-sarkar/68460. Please attach all the investigation reports and mention the patient's detailed medical history and current list of medications.
Regards,
Dr. Kaushik