Treatment of Lyme Disease with Lyme Carditis (Haemodynamically Stable or Unstable) in Children Under 9 Years

Lyme carditis is a cardiac complication of Lyme disease. When it presents in a child under 9 years — whether the child is haemodynamically stable or unstable — a specific antibiotic treatment strategy applies, guided by the child's age and symptoms.

Clinical scenario

Lyme disease with Lyme carditis, covering both haemodynamically stable and haemodynamically unstable presentations, in a child under 9 years of age.

For children under 12 diagnosed with Lyme disease, antibiotic treatment is offered according to their symptoms.

Treatment approach — partial overview

This protocol centres on intravenous antibiotic therapy. The specific agent, how it is dosed relative to the child's weight, and the full course details are defined in the structured protocol — see below.

Instant Access to Structured Evidence-Based Regimens

References

DOI: 10.1093/cid/ciaa1215

Lyme disease with Lyme carditis and haemodynamically stable

Lyme carditis and haemodynamically unstable

For children (under 12) diagnosed with Lyme disease, offer antibiotic treatment according to their symptoms as described in table 2.

Intravenous ceftriaxone for children under 50 kg: 80 mg/kg (up to 2 g) once per day for 21 days

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