What is the treatment for HACEK microorganisms in infective endocarditis (IE)?

Updated: Jan 03, 2019
  • Author: John L Brusch, MD, FACP; Chief Editor: Michael Stuart Bronze, MD  more...
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HACEK microorganisms should be treated as follows:

  • Administer ceftriaxone at 2 g/d IV for 4 weeks
  • Alternatively, administer ampicillin at 12 g/d by continuous pump or in 6 equally divided doses daily; this may be combined with gentamicin at 1 mg/kg (based on ideal body weight) IM or IV every 8 hours for 4 weeks

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