Footnotes

• Contributors SK: pediatric cardiologist, diagnosed the condition and led treatment plan, drafted the manuscript. NN: pediatric cardiologist in training, provided pictures of the ECG tracing and helped formatting the picture for publication. NH: neonatologist, helped drafting the manuscript and formatting the picture. GP: neonatologist in charge, helped drafting the manuscript.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.