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. 2021 Mar 19;49(9):1017-1026.
doi: 10.1515/jpm-2020-0331. Print 2021 Nov 25.

Global incidence of intraventricular hemorrhage among extremely preterm infants: a systematic literature review

Csaba Siffel  1   2 , Kristin D Kistler  3 , Sujata P Sarda  1
Affiliations
Free article

Global incidence of intraventricular hemorrhage among extremely preterm infants: a systematic literature review

Csaba Siffel et al. J Perinat Med. .
Free article

Abstract

Objectives: To conduct a systematic literature review to evaluate the global incidence of intraventricular hemorrhage grade 2-4 among extremely preterm infants.

Methods: We performed searches in MEDLINE and Embase for intraventricular hemorrhage and prematurity cited in English language observational studies published from May 2006 to October 2017. Included studies analyzed data from infants born at ≤28 weeks' gestational age and reported on intraventricular hemorrhage epidemiology.

Results: Ninety-eight eligible studies encompassed 39 articles from Europe, 31 from North America, 25 from Asia, five from Oceania, and none from Africa or South America; both Europe and North America were included in two publications. The reported global incidence range of intraventricular hemorrhage grade 3-4 was 5-52% (Europe: 5-52%; North America: 8-22%; Asia: 5-36%; Oceania: 8-13%). When only population-based studies were included, the incidence range of intraventricular hemorrhage grade 3-4 was 6-22%. The incidence range of intraventricular hemorrhage grade 2 was infrequently documented and ranged from 5-19% (including population-based studies). The incidence of intraventricular hemorrhage was generally inversely related to gestational age.

Conclusions: Intraventricular hemorrhage is a frequent complication of extremely preterm birth. Intraventricular hemorrhage incidence range varies by region, and the global incidence of intraventricular hemorrhage grade 2 is not well documented.

Keywords: epidemiology; extremely premature infant; intraventricular hemorrhage; neonatal intracranial hemorrhage; systematic literature review.

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