Correlation of Risk Factors and Severity of Hypoxic-ischaemic Encephalopathy

May 1, 2018 updated by: University Children's Hospital, Zurich

Evaluation of Perinatal Risk Factors for Hypoxic-ischaemic Encephalopathy (HIE) and Their Influence on Severity of Encephalopathy During and After Hypothermia Therapy

The first aim of this study is to analyse perinatal risk factors leading to hypoxic ischaemic encephalopathy in term and near term neonates born in Switzerland who were admitted to the neonatal and intensive care units offering hypothermia therapy.

Further, investigators would like to analyse the influence of these perinatal risk factors on the severity of encephalopathy during and after hypothermia therapy.

Study Overview

Status

Completed

Conditions

Hypoxic Ischaemic Encephalopathy

Intervention / Treatment

Other: risk factors

Detailed Description

Encephalopathy of the neonate could have different aetiologies. Perinatal asphyxia leading to hypoxia-ischaemia is frequent ,1-2 per 1000 life born neonates are affected. Hypoxic ischaemic encephalopathy is one of the most important causes for adverse neurodevelopmental outcome, cerebral palsy, epilepsy and hearing and vision deficiencies in term and near term neonates. Til now, hypothermia therapy is the only therapy reducing the risk of adverse neurodevelopmental outcome and is nowadays standard of care. In this study investigators would like to analyse perinatal risk factors causing HIE and their influence on the Sarnat Score on day 1 and 3 of life (during hypothermia therapy) and on day 4 of life (after hypothermia therapy).

Study Type

Observational

Enrollment (Actual)

160

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Switzerland
- - Zurich, Switzerland, 8044
    - University Children's Hospital Zurich

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

8 months to 9 months (Child)

Accepts Healthy Volunteers

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Neonates born >35 0/7 gestational weeks with clinical signs of hypoxic encephalopathy with Apgar Score<5 with 10minutes of life, mechanical ventilation with 10minutes of life, pH 7.0 or BE -16mmol/L, lactate >12mmol/L within 60minutes after birth, and seizures or Sarnat staging II-III or Thompson Score >7.

Description

Inclusion Criteria:

This study includes data of neonates suffering from hypoxic-ischaemic encephalopathy born with a gestational age > 35 0/7 weeks, who were admitted to the neonatal and intensive care units in Switzerland between 2011-2013 and were treated with therapeutic hypothermia.

Exclusion Criteria:

Neonates with hypoxic-ischaemic encephalopathy, born with a gestational age < 35 0/7 weeks or without hypothermia treatment or syndromal diseases or with malformations were excluded.
Further, children without consent to research use were excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Observational Models: Cohort
Time Perspectives: Retrospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of participants with either antepartal or intrapartal risk factors leading to hypoxic ischaemic encephalopathy and influence of these risk factors on sarnat staging during and after hypothermia therapy Time Frame: 7 days	The investigators evaluate the incidence of the known antepartal and intrapartal risk factors and analyze if there is a statistically significant difference of the influence of intrapartal or antepartal risk factors on the progression of the encephalopathy during and after hypothermia therapy. The investigators analyze sarnat staging on day one and three as a subject to the forementioned risk factors.	7 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Children's Hospital, Zurich

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Scheidegger S, Held U, Grass B, Latal B, Hagmann C, Brotschi B; National Asphyxia and Cooling Register Group. Association of perinatal risk factors with neurological outcome in neonates with hypoxic ischemic encephalopathy. J Matern Fetal Neonatal Med. 2021 Apr;34(7):1020-1027. doi: 10.1080/14767058.2019.1623196. Epub 2019 Jun 4.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2016

Primary Completion (Actual)

December 1, 2017

Study Completion (Actual)

December 1, 2017

Study Registration Dates

First Submitted

June 3, 2016

First Submitted That Met QC Criteria

June 9, 2016

First Posted (Estimate)

June 15, 2016

Study Record Updates

Last Update Posted (Actual)

May 2, 2018

Last Update Submitted That Met QC Criteria

May 1, 2018

Last Verified