Pyomyositis: Difference between revisions

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===Second stage===
===Second stage===
*Worsening pain, muscle swelling, fever, abscess formation
*Worsening pain, muscle swelling, fever, [[abscess]] formation


===Third stage===
===Third stage===
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*[[Rhabdomyolysis]]
*[[Rhabdomyolysis]]


==Diagnosis==
==Evaluation==
*CBC
*CBC
*Chem 10
*Chem 10
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*Surgical exploration is gold standard
*Surgical exploration is gold standard


==Treatment==
==Management==
*IV antibiotics alone for first stage
*IV antibiotics alone for first stage
**[[Vancomycin]] 15-20mg/kg IV q24 hr, [[ceftriaxone]] 1g IV q24 hr, [[clindamycin]] 600mg IV q8 hr
**[[Vancomycin]] 15-20mg/kg IV q24 hr, [[ceftriaxone]] 1g IV q24 hr, [[clindamycin]] 600mg IV q8 hr
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<references/>
<references/>


[[Category:Surg]]
[[Category:Surgery]]
[[Category:Orthopedics]]
[[Category:Orthopedics]]
[[Category:ID]]
[[Category:ID]]

Latest revision as of 13:09, 10 March 2017

Background

  • Primary bacterial infection of skeletal muscle
  • Also known as myositis tropicans, more common in tropical settings
  • Temperate climates in immune compromised patients
  • Mainly disease of children, age 2-5 most common

Pathophysiology

Risk Factors

  • DM
  • HIV
  • IVDU
  • Renal failure
  • Immunosuppression

Clinical Features

More commonly affects proximal lower extremity muscles

First stage

  • Localized muscle pain, low grade fevers, vague complaints[2]
    • Localized muscle inflammation without abscess

Second stage

  • Worsening pain, muscle swelling, fever, abscess formation

Third stage

Differential Diagnosis

Skin and Soft Tissue Infection

Look-A-Likes

Evaluation

  • CBC
  • Chem 10
  • PT/PTT
  • CK
  • Lactate
  • CT extremity with contrast
  • Ultrasound
  • MRI, study of choice
  • Surgical exploration is gold standard

Management

  • IV antibiotics alone for first stage
  • Surgical debridement plus antibiotics for abscess
  • IV fluids, pressors, airway management, rapid debridement for septic shock

Disposition

  • Admit

See Also

References

  1. Chauhan, S. (2004) ‘Tropical pyomyositis (myositis tropicans): current perspective’, Postgraduate Medical Journal, 80(943), pp. 267–270.
  2. Scharschmidt, T. J., Weiner, S. D. and Myers, J. P. (2004) ‘Bacterial pyomyositis’, Current Infectious Disease Reports, 6(5), pp. 393–396.