Incidence of maternal peripartum infection: A systematic review and meta-analysis

English version

Autoři: Susannah L. Woodd ^aff001; Ana Montoya ^aff002; Maria Barreix ^aff003; Li Pi ^aff004; Clara Calvert ^aff001; Andrea M. Rehman ^aff001; Doris Chou ^aff003; Oona M. R. Campbell ^aff001
Působiště autorů: Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom ^aff001; Box Hill Hospital, Eastern Health, Victoria, Australia ^aff002; Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland ^aff003; West China School of Public Health, Sichuan University, Chengdu, China ^aff004
Vyšlo v časopise: Incidence of maternal peripartum infection: A systematic review and meta-analysis. PLoS Med 16(12): e32767. doi:10.1371/journal.pmed.1002984
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.pmed.1002984

Souhrn

Background

Infection is an important, preventable cause of maternal morbidity, and pregnancy-related sepsis accounts for 11% of maternal deaths. However, frequency of maternal infection is poorly described, and, to our knowledge, it remains the one major cause of maternal mortality without a systematic review of incidence. Our objective was to estimate the average global incidence of maternal peripartum infection.

Methods and findings

We searched Medline, EMBASE, Global Health, and five other databases from January 2005 to June 2016 (PROSPERO: CRD42017074591). Specific outcomes comprised chorioamnionitis in labour, puerperal endometritis, wound infection following cesarean section or perineal trauma, and sepsis occurring from onset of labour until 42 days postpartum. We assessed studies irrespective of language or study design. We excluded conference abstracts, studies of high-risk women, and data collected before 1990. Three reviewers independently selected studies, extracted data, and appraised quality. Quality criteria for incidence/prevalence studies were adapted from the Joanna Briggs Institute. We used random-effects models to obtain weighted pooled estimates of incidence risk for each outcome and metaregression to identify study-level characteristics affecting incidence. From 31,528 potentially relevant articles, we included 111 studies of infection in women in labour or postpartum from 46 countries. Four studies were randomised controlled trials, two were before–after intervention studies, and the remainder were observational cohort or cross-sectional studies. The pooled incidence in high-quality studies was 3.9% (95% Confidence Interval [CI] 1.8%–6.8%) for chorioamnionitis, 1.6% (95% CI 0.9%–2.5%) for endometritis, 1.2% (95% CI 1.0%–1.5%) for wound infection, 0.05% (95% CI 0.03%–0.07%) for sepsis, and 1.1% (95% CI 0.3%–2.4%) for maternal peripartum infection. 19% of studies met all quality criteria. There were few data from developing countries and marked heterogeneity in study designs and infection definitions, limiting the interpretation of these estimates as measures of global infection incidence. A limitation of this review is the inclusion of studies that were facility-based or restricted to low-risk groups of women.

Conclusions

In this study, we observed pooled infection estimates of almost 4% in labour and between 1%–2% of each infection outcome postpartum. This indicates maternal peripartum infection is an important complication of childbirth and that preventive efforts should be increased in light of antimicrobial resistance. Incidence risk appears lower than modelled global estimates, although differences in definitions limit comparability. Better-quality research, using standard definitions, is required to improve comparability between study settings and to demonstrate the influence of risk factors and protective interventions.

Klíčová slova:

Africa – Asia – Europe – Chorioamnionitis – Labor and delivery – Respiratory infections – Sepsis – Systemic inflammatory response syndrome

Zdroje

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