Pulse oximetry test for screening congenital heart diseases: a systematic review.
Gabrielle Freitas Saganski, Márcia Helena de Souza Freire, Wendel Mombaque Dos Santos
PMID 38426937WHAT IT FOUND
Pulse oximetry screening for congenital heart disease has high specificity but moderate sensitivity overall.
Sensitivity improves to 67% when testing occurs between 24 and 48 hours of life, but drops to 29% in premature newborns, limiting its effectiveness in that group.
Key findings
01The overall sensitivity of the Pulse Oximetry Test was 47% and specificity was 98%.
02Sensitivity increased to 67% in the subgroup of newborns tested between 24 and 48 hours of life.
03In premature newborns, sensitivity was only 29%, indicating the test is not effective for screening this population.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
There was high inconsistency among the included studies regarding protocols and timing. The studies did not include long-term follow-up of the patients. The review included studies from both developed and developing countries with varying health system infrastructures, which may affect generalizability. Only one study addressed home births, limiting conclusions for that setting.
Declared interests
No specific funding sources or conflicts of interest were declared in the provided text.
The easy way to misread this
Do not assume a normal pulse oximetry result rules out congenital heart disease. The overall sensitivity is only 47%, meaning more than half of cases may be missed. This risk is higher if the test is done before 24 hours of life or on premature infants, where sensitivity drops to 29%.