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Community acquired pneumonia

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  • See also

    Parapneumonic effusion听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听听
    Sepsis
    Influenza
    Assessment of severity of respiratory conditions

    Key points

    1. Community acquired pneumonia (CAP) can be diagnosed clinically and is most often due to viruses
    2. Chest X-Ray, blood tests and microbiological investigations are not recommended for routine use in the diagnosis and management of CAP
    3. For non-severe pneumonia,听high dose听oral听amoxicillin is recommended, even for inpatient use听
    4. For infants <1 month of age see Recognition of the seriously unwell neonate and young infant and Sepsis guidelines

    Background

    • Pneumonia can be defined clinically as the presence of fever, cough and tachypnoea at rest (and retractions in younger children)
    • 鈥淐omplicated pneumonia鈥 occurs when there is a complication such as parapneumonic effusion, empyema, lung abscess or necrotising pneumonia听

    Assessment

    History

    • Fever
    • Tachypnoea at rest
    • Cough
    • Increased work of breathing/respiratory distress
    • Apnoea (neonates)
    • Abdominal pain

    Examination

    • Appears lethargic/unwell
    • Hypoxaemia
    • Tachypnoea
    • Chest wall in-drawing, retractions, grunting, nasal flaring
    • Crackles and/or bronchial breathing on auscultation
    • Absent breath sounds and a dull percussion note suggest a pleural effusion听

    Assessment of severity

    See Assessment of severity of respiratory conditions

    Severe pneumonia should be considered if there are clinical features of pneumonia听and听one or more of:

    Consider sepsis in children with severe pneumonia

    Management

    Investigations

    Investigations, including chest X-Ray (CXR), are not听recommended routinely for CAP,particularly in those with mild disease who are expected to be managed as an outpatient听

    CXR听

    • Recommended when severe or complicated pneumonia is suspected
    • Consider repeating if the child deteriorates at any time or fails to clinically improve after 48-72 hours of appropriate antibiotic therapy
    • Follow-up CXR is not required for those who have uncomplicated pneumonia or small parapneumonic effusion and recover uneventfully
    • Follow-up CXR is recommended after 6 weeks for:
      • complicated pneumonia
      • recurrent pneumonia involving the same lobe or if initial suspicion of a chest mass, anatomical abnormality or foreign body

    Severe or complicated pneumonia

    • UEC听for children receiving intravenous fluids听
    • FBE and blood film听
    • Microbiological investigations听
      • Blood culture
      • Influenza PCR听(nasal swab or aspirate)
      • COVID-19 testing (as per local testing criteria)
      • Testing for other viral pathogens will not change management
      • Testing for atypical pathogens is unhelpful as it does not differentiate infection from asymptomatic carriage
    • Acute phase reactants (including CRP and procalcitonin)听cannot distinguish between a viral or bacterial cause nor indicate severity
    • Consider sepsis

    Treatment

    Admission to hospital is required for children who require supplemental O2, hydration support with NG or IV fluids, or moderate to severe work of breathing

    • Provide supplemental oxygen if saturations are <90% 听
    • If giving NG or IV maintenance fluids, limit fluids to 2/3 of the child鈥檚 calculated fluid requirement听to avoid fluid overload, with regular clinical review of fluid status
    • Advice regarding antibiotic management is summarised in the algorithm below.听High dose oral amoxicillin is as effective as IV benzylpenicillin 听听
    • Most children, including hospitalised children, can be managed with oral antibiotics听
    • Antimicrobial recommendations may vary according to local antimicrobial susceptibility patterns; please refer to听local guidelines


    Approach to treatment
    Community Acquired Pneumonia flowchart_update Aug2025_2

    Penicillin hypersensitivity

    Refer to 听and Antibiotic prescribing in children with reported penicillin or cephalosporin allergy for guidance on assessing severity of allergy and appropriate antimicrobial options

    For immediate and/or severe penicillin hypersensitivity, non-beta-lactam antibiotic alternatives for CAP include 听

    • Oral
      • Doxycycline 50 mg (<26 kg), 75 mg (26-35 kg), 100 mg (>35 kg) oral BD
      • Azithromycin 10 mg/kg (max 500 mg) oral daily听
    • Intravenous
      • Ciprofloxacin 10 mg/kg (max 400 mg) IV 12 hourly

    听 听 听 听 听 听 听 听PLUS

      • Vancomycin听 IV (see local hospital protocol for doses)

    Atypical pneumonia

    There is no proven benefit from treatment of Mycoplasma pneumoniae pneumonia but it may be considered in severe pneumonia not responding to treatment

    Consider consultation with local paediatric team when

    • Child fulfills criteria for hospital admission
    • Outpatient therapy fails

    Consider transfer when

    • Severe or complicated pneumonia
    • Comorbidities such as cardiac disease, chronic respiratory disease, immune deficiency or suppression are present
    • Child requiring care above the level of comfort of the local hospital

    For emergency advice and paediatric or neonatal ICU transfers, see Retrieval Services

    Consider discharge when

    Child is maintaining adequate oxygenation and oral intake听
    Note:听children managed as outpatients should have medical review in 24鈥48 hrs

    Parent information

    Pneumonia

    Last updated October 2023

  • Reference List

    1. Ambroggio L, Brokamp C, Mantyla R et al. Validation of the British Thoracic Society Severity Criteria for Pediatric Community-acquired Pneumonia. Pediatr Infect Dis J 2019;38:894鈥899
    2. Ambroggio L. Beta-lactam versus beta- lactam/macrolide therapy in pediatric outpatient pneumonia. Pediatr Pulmonol. 2016 May;51(5):541-8.
    3. Ambroggio L, Test M, Metlay JP, Graf TR, Blosky MA, Macaluso M, Shah SS Comparative Effectiveness of Beta-lactam Versus Macrolide Monotherapy in Children with Pneumonia Diagnosed in the Outpatient Setting. Pediatr Infect Dis J. 2015 Aug;34(8):839-42.
    4. Biondi E, McCulloh R, Alverson B, Klein A, Dixon A, Ralston S. Treatment of mycoplasma pneumonia: a systematic review. Pediatrics. 2014 Jun;133(6):1081-90. doi: 10.1542/peds.2013-3729
    5. Bradley, J.S., Byington, C.L., Shah, S.S. The management of community- acquired pneumonia in infants and children older than 3 months of age: Clinical practice guidelines by the Pediatric Infectious Diseases Society and the Infectious Diseases Society of America. Clin Infect Dis, 2011; 53:e25.
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