Evidence map›Paper›PMID 33220455›Full record

SynthesisTravel medicine and infectious disease

Maternal clinical characteristics and perinatal outcomes among pregnant women with coronavirus disease 2019. A systematic review.

Rommy H Novoa, Willy Quintana, Pedro Llancarí, Katherine Urbina-Quispe, Enrique Guevara-Ríos, Walter Ventura

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Travel medicine and infectious disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 3 pooled it
5.7field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 3 syntheses or guidelines pooled it, 77 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Observational
  5. Article
  6. Article
  7. Article
  8. Article
  9. COVID-19's Effect in Pregnancy and Vertical Transmission: A Systematic Review.International journal of preventive medicine · 2024
    Review
  10. Article
  11. Article
  12. Observational
  13. Article
  14. Are in-hospital COVID-19-related mortality and morbidity in pregnancy associated with gestational age?Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology · 2022
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Rommy H NovoaHigh-Risk Pregnancy Unit, Department of Obstetrics and Perinatology, Instituto Nacional Materno Perinatal, Lima, Peru; Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru.
Willy QuintanaHigh-Risk Pregnancy Unit, Department of Obstetrics and Perinatology, Instituto Nacional Materno Perinatal, Lima, Peru; Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru.
Pedro LlancaríResidency Training Program in Obstetrics & Gynecology, Universidad Nacional Mayor de San Marcos, Lima, Peru.
Katherine Urbina-QuispeResidency Training Program in Obstetrics & Gynecology, Universidad Nacional Mayor de San Marcos, Lima, Peru.
Enrique Guevara-RíosHigh-Risk Pregnancy Unit, Department of Obstetrics and Perinatology, Instituto Nacional Materno Perinatal, Lima, Peru; Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru.
Walter VenturaMaternal & Fetal Medicine Unit, Department of Obstetrics and Perinatology, Instituto Nacional Materno Perinatal, Lima, Peru; Fetal Medicine Unit, Clínica Angloamericana, British Medical Hospital, Lima, Peru. Electronic address: wventura@angloamericana.com.pe.
National University of San Marcos · PEInstituto Nacional de Salud del Niño · PE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe the maternal clinical characteristics, maternal and perinatal outcomes in COVID-19-positive pregnant women.

methodsArticles in all languages on the SARS-CoV-2 infection in pregnant women were sought from MEDLINE, EMBASE, Cochrane Library and LILACS; China National Knowledge Infrastructure Database (CNKI), Chinese Science and Technology Periodical Database (VIP) and Wan Fang Data between December 1, 2019 and April 27, 2020. Bulletins and national reports were also searched.

resultsFrom 12,168 retrieved articles, 143 were selected for full-text assessment; 33 for descriptive analyses, and 4 case-controls for meta-analysis. In 322 infected pregnant women, aged 20-45 years, the most frequent maternal comorbidity was obesity (24.2%). Forty-two (28.4%) were asymptomatic at admission. Cough (n = 148,59.7%) and fever (n = 147,59.3%) were the most prevalent symptoms. In the meta-analysis, fever (OR: 0.13,95% CI 0.05 to 0.36) and cough (0.26,95% CI 0.11 to 0.59) were lower in pregnant women with COVID-19 than non-pregnant women with COVID-19.195 (60.6%) delivered, and 125 (38.8%) remained pregnant during the study. Cesarean was reported in 99 (50.8%) women and vaginal delivery in 64 (32.8%). The main adverse obstetric outcome was premature birth (n = 37,18.9%). Thirty patients (10.3%) with COVID-19-related complications required intensive care, one (0.3%) died. SARS-CoV-2 was absent in breast milk, amniotic fluid, placenta or umbilical cord blood.

conclusionsThe maternal clinical characteristics of COVID-19-positive pregnant include frequently fever and cough; however significantly less frequently than non-pregnant women with COVID-19. Iatrogenic preterm birth is the main adverse obstetric outcome. Current data does not support vertical transmission in the third trimester.

Indexed as

COVID-19FemaleHumansInfant, NewbornInfectious Disease Transmission, VerticalPregnancyPregnancy Complications, InfectiousPregnancy OutcomeRiskSARS-CoV-2Coronavirus disease 2019COVID-19Novel coronavirusPerinatal outcomePregnancySARS-CoV-2Vertical transmission

Identifiers

PMID33220455
PMCPMC7674121
OpenAlexW3103595751

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.