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Bronchiectasis - Management
Which antibiotic should I prescribe for an infective exacerbation of bronchiectasis?

  • Previous microbiology cultures, when available, should guide antibiotic choice.
  • When previous microbiology cultures are not available:
    • Prescribe according to local protocols where available, or
    • Prescribe amoxicillin 500 mg three times a day (for 10–14 days). Clarithromycin 500 mg twice a day, erythromycin 500 mg four times a day, or doxycycline (adults only) 200 mg stat and then 100 mg once a day (all for 10–14 days) are alternatives for people allergic to penicillin.
    • For further information on dosing regimens for empirical antibiotic treatment, see Prescriptions.
Table 1. Recommended antibiotics (with doses for adults) for acute exacerbations of bronchiectasis if sputum results from a previous sputum sample are available.
Organism
First-line antibiotic
Second-line antibiotic
Duration
Streptococcus pneumoniae
Amoxicillin 500 mg TDS
Clarithromycin 500 mg BD
10–14 days
Haemophilus influenzae (beta-lactamase negative)
Amoxicillin 500 mg TDS or
Amoxicillin 1 g TDS or
Amoxicillin 3 g BD
Clarithromycin 500 mg BD
or
Doxycycline 200 mg stat, then 100 mg OD*
10–14 days
Haemophilus influenzae (beta-lactamase positive)
Co-amoxiclav 625 mg TDS
Clarithromycin 500 mg BD
or
Doxycycline 200 mg stat, then 100 mg OD*
10–14 days
Moraxella catarrhalis
Co-amoxiclav 625 mg TDS
Doxycycline 200 mg stat, then 100 mg OD*
10–14 days
Staphylococcus aureus (MSSA)
Flucloxacillin 500 mg QDS
Clarithromycin 500 mg BD
10–14 days
Staphylococcus aureus (MRSA)
Rifampicin PLUS trimethoprim 200 mg BD
Rifampicin PLUS doxycycline 100 mg BD‡§
10–14 days
Coliforms (such as Klebsiella or enterobacter)
Ciprofloxacin 500 mg BD
Intravenous antibiotics
10–14 days
Pseudomonas aeruginosa
Ciprofloxacin 500 mg BD
or
Ciprofloxacin 750 mg BD
Intravenous antibiotics
10–14 days
* Doxycycline is not recommended as a second-line choice for Haemophilus influenzae infection in children.
† Ciprofloxacin is recommended as a second-line choice for Moraxella catarrhalis or Pseudomonas aeruginosa infection in children (benefits thought to outweigh theoretical risk of arthropathy). See the BNF (British National Formulary) for dosage in children.
‡ For adults weighing < 50 kg, give rifampicin 450 mg OD. For adults weighing > 50 kg, give rifampicin 600 mg OD.
§ Rifampicin plus doxycycline is not recommended as a second-line choice for children with MRSA. Seek specialist advice if first-line treatment is contraindicated.
For children's doses, see the BNF (British National Formulary).

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