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Journal of Tropical Pediatrics 2006 52(1):46-48; doi:10.1093/tropej/fmk007
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© The Author [2006]. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Clinical Review

Evidence Behind the WHO Guidelines: Hospital Care for Children

Mary Ryana and George H. McCracken, Jrb

a Paediatric Emergency Medicine, Royal Liverpool Children's NHS Trust, Alder Hey, Liverpool, UK b University of Texas, Southwestren Medical Center, Dallas, USA

Correspondence: Mary Ryan, Paediatric Emergency Medicine, Royal Liverpool Children's NHS Trust, Alder Hey, Liverpool, UK. E-mail <Mary.Ryan{at}RLC.NHS.UK>


   Antibiotic therapy for septicaemia in children in developing countries
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 Antibiotic therapy for...
Introduction
 Methodology
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The World Health Organization has produced guidelines for the management of common illnesses in hospitals with limited resources. This series reviews the scientific evidence behind WHO's recommendations. The WHO guidelines, and more reviews are available at http://www.who.int/child-adolescent-health/publications/CHILD_HEALTH/PB.htm.

This review addresses the question: "What are the most appropriate empirical first-line antibiotics for children with septicaemia?" The WHO Pocketbook of Hospital Care for Children states: Antibiotic therapy – Where blood cultures are available, obtain blood cultures before starting antibiotics – Give ampicillin (or penicillin) and gentamicin – Give cloxacillin (if available) instead of penicillin if extensive skin pustules or abscesses as these might be signs of Staphylococcus infection.


   Introduction
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 Antibiotic therapy for...
 Introduction
Methodology
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Infections are the most common cause of death in infants and children, causing over 5 million child deaths every year worldwide [1]. There is much overlap in the common clinical syndromes of pneumonia, meningitis and other bacterial infections. Indeed, WHO defines pneumonia with cyanosis, inability to feed or convulsions as ‘very severe disease’ in recognition of this overlap, and in recog-nition of the common occurrence of occult bacteraemia or infection (such as urinary tract infection). Empiric treatment of presumed serious bacterial infection is highly effective [2]. Improved outcomes have been noted for several of the major severe disease categories without primary bacterial aetiology (severe malnutrition, severe malaria & measles), indicating secondary bacterial infection as a common ‘end point’ in these conditions.

Septicaemia is a clinical syndrome characterized by a systemic inflammatory response. The clinical features invariably include fever or hypothermia, tachypnoea, and may progress to cardiovascular instability (hypotension) and major organ dysfunction (septic shock). Purpura or petechiae may be present. The systemic inflammatory response is due to a complex cascade of immune activation and cytokine release. The inciting aetiology may be bacterial, viral, fungal or other stimuli. Children most at risk are young infants and those with severe malnutrition.


   Methodology
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The clinical search strategy employed was: (septicaemia OR sepsis) AND (children OR paediatric OR pediatric) AND developing (country OR countries). The clinical filter was ‘therapy’ was used and 71 articles were found. 10 systematic reviews were found using the same search strategy.

A further search was conducted using the search strategy: Antibiotics AND (septicaemia OR sepsis) AND (children OR paediatric OR pediatric). This search resulted in 30 articles and 15 reviews.

All abstracts were read and relevant articles sourced.

Articles were excluded if they related to chemotherapy or pharmacological immunosuppression, if they related specifically to sickle cell disease, dealt with predictors of illness or related specifically to nosocomial infection.

No RCTs were found. Two retrospective cohort studies, and six prospective cohort studies were found that were relevant.

One review article was found, however this concentrated mainly on North America with only one study from a developing country included. For this reason it was not felt to be sufficiently relevant to be included.


   Results
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 Antibiotic therapy for...
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All eight included studies examined patients with suspected sepsis and collected data on the infecting organism and subsequent antibiotic sensitivities. Six studies included recommendations on empiric antibiotic therapy for sepsis [3–7, 9].

One study focused specifically on disease due to Streptococcus pneumoniae in rural West Africa [10]. The authors of this study isolated 103 cases of pneumococcal infection over a 2-year period (8% pneumonia, 35.5% meningitis, 5% sepsis). Antibiotic resistance was not found to be a significant problem in this study; only 3/34 isolates obtained showing reduced susceptibility to oxacillin, 3/34 resistant to chloramphenicol, and 1/34 resistant to trimethoprim-sulfamethoxazole (TMP-SMX). This resistance pattern may have changed significantly in the 10 years since this study, however.

Two studies [3, 7] demonstrated an increased incidence of bacteraemia in malnourished children (Wellcome Class of Malnutrition); 9.6% and 7.7% malnourished hospitalized children having bacteraemia at presentation compared with 4.9% of well nourished hospitalized children.

Infecting organisms in children with malnutrition were similar in both studies, with S. pneumoniae (19% and 19%) the most common bacteria isolated, followed by Salmonella (19% and 6.4%), Staphylococcus aureus (18% and 16%) and Escherichia coli (17% and 9.6%). Gram-negative enteric aerobes were 2.6 times more frequent in malnourished than in well-nourished children [3].

Antibiotic sensitivity data was also similar in both studies, with a recommended combination of ampicillin and gentamicin covering 86% of community acquired infection in one study [3], and 90.3% in the other [7]. Overall rates of resistance to penicillin by S. aureus were also similar (33% vs. 40%).

Two studies focused on sepsis in young infants [5, 6]. In both studies S. pneumoniae was identified as the most common pathogen in children with bacteraemia (13% and 27%). One study, based in the Gambia, showed a 9.4% infection rate with Group A streptococcus [5] while another in Papua New Guinea, showed a 27% infection rate with this organism [6]. Infection with S. aureus remained prevalent in this group (32% and 21%), with the first study identifying 41% of staphylococcal infected infants presenting with a typical skin rash.

Sensitivities were not fully reported in one study [5] although all Salmonella spp. isolated during the study period were resistant to penicillin, but sensitive to ampicillin and chloramphenicol.

Another study of young infants [6] showed that 27% of pneumococci isolated had intermediate resistance to penicillin. Ten of the 12 staphylococcal isolates were penicillin resistant; all were sensitive to gentamicin in vitro.

Two further studies [4, 9] included children of all ages and levels, malnourished and well nourished. The most common infecting organism in the first study was S. pneumoniae, followed by Salmonella, Haemophilus influenza and E. coli. There was a 24% resistance to penicillin in the pneumococci, and all S. aureus isolates were fully resistant to penicillin. 98% of E.coli isolates were susceptible to gentamicin and 89% of Salmonella spp. were susceptible to ampicillin. The authors of this study recommend ampicillin and gentamicin as first line antibiotics in the treatment of suspected bacteraemia.

The second study [9] focused on bacteraemia in children in Malawi and found non-typhi Salmonella was the most common infecting organism (38.4%), followed by enteric Gram-negative bacilli (24.9%) and S. pneumoniae (16.2%). Resistance was common to current first line antibiotics (ampicillin and TMP-SMX) and one-fifth of all isolates also resistant to chloramphenicol. Enteric Gram-negative bacilli had a high rate of resistance to all antibiotics including a 20% resistance to gentamicin, but the authors acknowledge that half of these isolates were from infants on the neonatal special care unit and nosocomial infection was probable. The authors of this study recommend chloramphenicol as the first line treatment for septicaemia, with the addition of gentamicin if no improvement is seen in 48 h.

One further study conducted in Papua New Guinea [8] concentrated mainly on disease-specific causes of death in children. Sepsis was found to be the cause of death in 35.7% of children, and accounted for 42.9% of neonatal death. The most common pathogen identified was again S. pneumoniae. The study authors noted the higher than expected rate of enteric Gram-negative bacillus infection in this group – accounting for almost a quarter of all deaths.


   Discussion
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 Antibiotic therapy for...
 Introduction
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Despite a variety of locations in the studies reviewed, it is clear that two main issues emerge;

  1. Infecting organisms in septicaemia in infants and children are similar across locations in the developing world, and include Gram-positive (S. pneumoniae, S. aureus, Group A streptococci) and Gram-negative bacteria (H. influenzae and enteric Gram-negative bacilli).
  2. There is established resistance to penicillin in S. aureus infections, and increasing penicillin resistance among pneumococcal infections in most developing countries.


   Summary
Top
 Antibiotic therapy for...
 Introduction
 Methodology
 Results
 Discussion
 Summary
References
 
A combination of ampicillin and gentamicin as first line therapy for suspected non-meningitic septicaemia in children is appropriate first-line therapy. Ampicillin should be given in high dose (200–300 mg/kg/day) to overcome penicillin-resistance among pneumococci. Once daily gentamicin has been proven to be safe, effective and associated with less toxicity than more frequent doses.

Where meningitis is suspected, the options are chloramphenicol or a third-generation cephalosporin. A third-generation cephalosporin (e.g. ceftriaxone) will be preferable to chloramphenicol where resistance to chloramphenicol and penicillin among H. influenzae and S. pneumoniae is common.

Anti-staphylococcal antibiotics (such as beta-lactamase stable penicillins flucloxacillin or cloxacillin) should be given as first-line treatment if there are suggestive skin lesions, abscesses, bone or joint infection, or if other signs of staphylococcal infection (such as pneumatocoeles or empyema) are present. If either flucloxacillin or cloxacillin are not available, chloramphenicol will have some anti-staphylococcal activity.

Further studies are needed to follow antimicrobial susceptibility in developing countries so that empirical treatment recommendations maintain a strong evidence base. Restricting the use of third-generation cephalosporins and beta-lactamase stable penicillins to where there are specific indications will reduce the development of antibiotic resistance.

If you would like to contribute to this process of documenting the evidence behind the who recommendations of Hospital Care for Children, please contact Dr Julian Kelly: julian.kelly{at}rch.org.au


   References
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 Antibiotic therapy for...
 Introduction
 Methodology
 Results
 Discussion
 Summary
 References
 

  1. The World Health Report 2004: Changing History. Geneva, Switzerland, World Health Organisation, 2004.
  2. Bang AT, Bang RL, Baitule SB, et al. Effect of home-based neonatal care and management of sepsis on neonatal mortality: field trial in rural India. Lancet 1999;354:1955–61.[CrossRef][ISI][Medline]
  3. Friedland IR. Bacteraemia in severely malnourished children. Ann Trop Paed 1992;12:433–40.[Medline]
  4. Berkowitz FE. Bacteraemia in hospitalized black South African children. Am J Dis Child 1984;138: 551–57.[Abstract]
  5. Mulholland, EK, Ogunlesi OO, Adegbola RA, et al. Etiology of serious infections in young Gambian infants. Pediatr Infect Dis 1999;18:S35–41.
  6. Lehmann D, Michael A, Omena M, et al. Bacterial and viral etiology of severe infection in children less than three months old in the highlands of Papua New Guinea. Pediatr Infect Dis J 1999;18:S42–9.[Medline]
  7. Reed RP, Wegerhoff FO, Rothberg AD. Bacteraemia in malnourished rural African children. Ann Trop Paed 1996;16:61–8.[Medline]
  8. Duke T, Michael A, Mgona J, et al. Etiology of child mortality in Goroka, Papua New Guinea: a prospective two-year study. Bull World Health Org 2002;80:16–25.[Medline]
  9. Walsh AL, Phiri A, Graham S, et al. Bacteraemia in febrile Malawian children: clinical and microbiologic features. Pediatr Infect Dis J 2000;19:312–18.[CrossRef][ISI][Medline]
  10. O'Dempsey TJ, McArdle T, Lloyd-Evans N, et al. Pneumococcal Disease among children in rural West Africa. Pediatr Infect Dis J 1996;15:431–7.[CrossRef][ISI][Medline]

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Antibiotics for children with septicaemia in hospitals with limited resources
James A Berkley, et al.
Journal of Tropical Pediatrics, 22 Apr 2006 [Full text]
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