Community Acquired Pneumonia - Treatment in the Community
Start antibiotics immediately
Use CRB65 score to guide mortality risk, place of care & antibiotics
Each CRB65 parameter scores 1: Confusion (AMT<8); Respiratory rate >30/min; BP systolic <90 or diastolic ≤60; Age >65;
Low severity (score 0) - consider home based care
Moderate severity - (score 1 - 2) - intermediate risk consider hospital assessment
High severity (score 3 - 4) - consider urgent hospital admission
Always give safety-net advice and likely duration of symptoms. Mycoplasma infection is rare in >65s.
If no response to antibiotics after 2 weeks consider possibility of lung cancer or tuberculosis and arrange chest X-ray. Seek risk factors for Staph aureus and Legionella (e.g. older age, smoker, underlying immunosuppression).
HIV testing is recommended as CAP is an HIV indicator condition.
Drug details
If CRB65=0:
Amoxicillin
500mg TDS
5 days
Penicillin allergy
Doxycycline
(avoid co-administration of Ca/Mg/Iron preps)
200mg stat then 100mg OD
5 days
If CRB65=1-2 & AT HOME:
Amoxicillin
(or antibiotic guided by recent microbiology culture results)
500mg TDS
5 days
Second Line:
Co-trimoxazole
960mg BD
5 days
Atypical organism suspected:
Doxycycline
200mg stat then 100mg OD
5 days
Atypical organism suspected
and pregnant:
Erythromycin
500mg QDS
5 days