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==Overview==
==Overview==
The mainstay of therapy for botulism is antitoxin therapy.  Antimicrobial therapy is recommended for wound botulism after antitoxin has been administered. 


==Treatment==
==Medical Therapy==
The respiratory failure and paralysis that occur with severe botulism may require a patient to be on a breathing machine for weeks, plus intensive medical and nursing care. After several weeks, the [[paralysis]] slowly improves. If diagnosed early, foodborne and wound botulism can be treated by inducing [[passive immunity]] with a horse-derived [[antitoxin]], which blocks the action of toxin circulating in the blood.<ref>Shapiro, Roger L. MD; Charles Hatheway, PhD; and David L. Swerdlow, MD [http://www.annals.org/cgi/content/full/129/3/221?ijkey=360c044072fcb6ead39e0866dcdbba9c51784956 ''Botulism in the United States: A Clinical and Epidemiologic Review''] Annals of Internal Medicine. 1 August 1998 Volume 129 Issue 3 Pages 221-228</ref> This can prevent patients from worsening, but recovery still takes many weeks. Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using [[enema]]s. Wounds should be treated, usually surgically, to remove the source of the toxin-producing bacteria. Good supportive care in a hospital is the mainstay of therapy for all forms of botulism.
 
Besides supportive care, infant botulism can be treated with human botulism immune globulin (BabyBIG), when available. Supply is extremely limited, but is available through the California Department of Health Services. This dramatically decreases the length of illness for most infants. Paradoxically, antibiotics (especially [[aminoglycosides]] or [[clindamycin]]) may cause dramatic acceleration of paralysis as the affected bacteria release toxin. Visual stimulation should be performed during the time the infant is paralyzed as well, in order to promote the normal development of visual pathways in the brain during this critical developmental period.


Furthermore each case of food-borne botulism is a potential public health emergency in that it is necessary to identify the source of the outbreak and ensure that all persons who have been exposed to the toxin have been identified, and that no contaminated food remains.
Clostridium botulinum is a [[toxin]] that paralyzes the [[muscles]]. [[Breathing]] requires the use of many muscles, including the [[diaphragm]]. Therefore, botulism will make breathing very difficult, so many people with botulism will need to be on a [[mechanical ventilator]] for a significant period of time, and Botulinum antitoxin should be administered as soon as possible. Antitoxin does not reverse paralysis but arrests progression.


There are two primary Botulinum Antitoxins available for treatment of wound and foodborne botulism. Trivalent (A,B,E) Botulinum Antitoxin is derived from equine sources utilizing whole [[antibodies]] (Fab & Fc portions). This antitoxin is available from the local health department via the [[Centers for Disease Control|CDC]]. The second antitoxin is heptavalent (A,B,C,D,E,F,G) Botulinum Antitoxin which is derived from "despeciated" equine [[IgG]] antibodies which have had the Fc portion cleaved off leaving the F(ab')2 portions. This is a less immunogenic antitoxin that is effective against all known strains of botulism where not contraindicated. This is available from the US Army. On June 1, 2006 the US Department of Health and Human Services awarded a $363 million contract with Cangene Corporation for 200,000 doses of Heptavalent Botulinum Antitoxin over five years for delivery into the Strategic National Stockpile beginning in 2007.<ref>http://mmrs.fema.gov/news/publichealth/2006/aug/nph2006-08-03a.aspx</ref>
==Antimicrobial regimen==
::* 1.'''Foodborne botulism'''<ref>{{cite web | title = CDC Drug Service  | url = http://www.cdc.gov/laboratory/drugservice/formulary.html#tbat }}</ref>
:::*  1.1 '''Adult'''
::::* Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.5 mL/min; incremental infusion rate if tolerated (every 30 minutes): double the rate; maximum infusion rate: 2 mL/min
:::* 1.2 '''Children'''
::::* 1.2.1 '''Children < 1 year'''
:::::* Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (10% of adult dose regardless of body weight)
::::* 1.2.1 '''Children  1-17 years'''
:::::* Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (20 – 100% of adult dose)
:::::* Note:Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using enemas.  A patient with severe botulism may require a ventilator as well as intensive medical and nursing care for several months.
::* 2. '''Infant botulism'''<ref>{{Cite web | title =BabyBIG | url =http://www.fda.gov/BiologicsBloodVaccines/BloodBloodProducts/ApprovedProducts/LicensedProductsBLAs/FractionatedPlasmaProducts/ucm089339.htm }}</ref>
:::* Preferred regimen:  BabyBIG, Botulism Immune Globulin Intravenous (Human) (BIG-IV) is for the treatment of patients below one year of age.The recommended total dosage  is 1mL/kg (50mg/kg), given as a single IV infusion as soon as the clinical diagnosis of infant botulism is made
:::* Note: infant with botulism must receive supportive care during their recovery. This includes ensuring proper nutrition,keeping the airway clear,watching for respiratory failure and if it develops,ventilator  may be needed.
::* 3. '''Wound botulism'''
:::*  3.1 '''Adult'''
::::* Preferred regimen (adult): Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.5 mL/min; incremental infusion rate if tolerated (every 30 minutes): double the rate; maximum infusion rate: 2 mL/min
:::* 3.2 '''Children'''
::::* 3.2.1 '''Children < 1 year'''
:::::* Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (10% of adult dose regardless of body weight)
::::* 3.2.2 '''Children  1-17 years'''
:::::* Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (20 – 100% of adult dose)
:::::* Note (1): Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using enemas.  A patient with severe botulism may require a ventilator as well as intensive medical and nursing care for several months.
:::::* Note (2): For wound botulism, antibiotics are used in addition to appropriate debridement.
:::::* Note (3): Antibiotic therapy is recommended for wound botulism after antitoxin has been administered.  [[Penicillin G]] 3 MU IV q4h in adults is frequently used. [[Metronidazole]] 500 mg IV q8h may be used as an alternative for penicillin-allergic patients.


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Michael Maddaleni, B.S., Tarek Nafee, M.D. [2]

Overview

The mainstay of therapy for botulism is antitoxin therapy. Antimicrobial therapy is recommended for wound botulism after antitoxin has been administered.

Medical Therapy

Clostridium botulinum is a toxin that paralyzes the muscles. Breathing requires the use of many muscles, including the diaphragm. Therefore, botulism will make breathing very difficult, so many people with botulism will need to be on a mechanical ventilator for a significant period of time, and Botulinum antitoxin should be administered as soon as possible. Antitoxin does not reverse paralysis but arrests progression.

Antimicrobial regimen

  • 1.Foodborne botulism[1]
  • 1.1 Adult
  • Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.5 mL/min; incremental infusion rate if tolerated (every 30 minutes): double the rate; maximum infusion rate: 2 mL/min
  • 1.2 Children
  • 1.2.1 Children < 1 year
  • Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01 mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01 mL/kg/min ; maximum infusion rate: 0.03 mL/kg/min (10% of adult dose regardless of body weight)
  • 1.2.1 Children 1-17 years
  • Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01 mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01 mL/kg/min ; maximum infusion rate: 0.03 mL/kg/min (20 – 100% of adult dose)
  • Note:Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using enemas. A patient with severe botulism may require a ventilator as well as intensive medical and nursing care for several months.
  • 2. Infant botulism[2]
  • Preferred regimen: BabyBIG, Botulism Immune Globulin Intravenous (Human) (BIG-IV) is for the treatment of patients below one year of age.The recommended total dosage is 1mL/kg (50mg/kg), given as a single IV infusion as soon as the clinical diagnosis of infant botulism is made
  • Note: infant with botulism must receive supportive care during their recovery. This includes ensuring proper nutrition,keeping the airway clear,watching for respiratory failure and if it develops,ventilator may be needed.
  • 3. Wound botulism
  • 3.1 Adult
  • Preferred regimen (adult): Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.5 mL/min; incremental infusion rate if tolerated (every 30 minutes): double the rate; maximum infusion rate: 2 mL/min
  • 3.2 Children
  • 3.2.1 Children < 1 year
  • Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01 mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01 mL/kg/min ; maximum infusion rate: 0.03 mL/kg/min (10% of adult dose regardless of body weight)
  • 3.2.2 Children 1-17 years
  • Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01 mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01 mL/kg/min ; maximum infusion rate: 0.03 mL/kg/min (20 – 100% of adult dose)
  • Note (1): Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using enemas. A patient with severe botulism may require a ventilator as well as intensive medical and nursing care for several months.
  • Note (2): For wound botulism, antibiotics are used in addition to appropriate debridement.
  • Note (3): Antibiotic therapy is recommended for wound botulism after antitoxin has been administered. Penicillin G 3 MU IV q4h in adults is frequently used. Metronidazole 500 mg IV q8h may be used as an alternative for penicillin-allergic patients.

References

  1. "CDC Drug Service".
  2. "BabyBIG".


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