Critical Congenital Heart Disease (CCHD)

Pulse oximeter



Midwives & Critical Congenital Heart Defect (CCHD) Pulse Oximetry Screening

An overview of frequently asked questions regarding the implementation of CCHD screening in Ontario.

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Webinar: Critical Congenital Heart Defect (CCHD) and Pulse Oximetry Screening 

Newborn Screening Ontario (NSO) is responsible for the implementation of pulse oximetry screening. Relevant research and evidence of pulse oximetry screening for CCHD is presented in this Webinar. Midwifery-specific information such as the why, when and how to screen newborns, as well as documentation and immediate consultation procedures for midwives are discussed.


Pulse Oximeter Maintenance & Cleaning Instructions

Information on cleaning and maintenance practices based on provincial standards and manufacturer instructions for the four most common neonatal pulse oximeters.

Other Resources

NSO Critical Congenital Heart Defect (CCHD) Resources for clinicians on screening for CCHD; includes screening tools and training materials.

PulseOxTool app aids clinicians in screening for CCHD; contains an algorithm that allows clinicians to calculate whether the result is negative or positive.  

Wisconsin Shine Heart Atlas provides anatomical information on the heart and CCHD with diagrams and brief descriptions of the 12 target diagnoses of the disease.