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Silent Complexity: A Term IUGR Neonate & Common Atrium, Bradycardia & Hidden Admixture Physiology: A Comprehensive Case Report.

Tarun Singh, Ankur Agarwal

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Indian Journal of Trauma and Emergency Pediatrics 17(2):p 53-56, July - Dec. 2025. | DOI: 10.21088/ijtep.2348.9987.17225.3

How Cite This Article:

Singh T, Agarwal A. Silent Complexity: A Term IUGR Neonate & Common Atrium, Bradycardia & Hidden Admixture Physiology: A Comprehensive Case Report. Indian J Trauma Emerg Pediatr. 2025;17(2):53–6.

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Received : November 18, 2025         Accepted : December 19, 2025          Published : December 31, 2025

Abstract

We report a term small-for-gestational-age male infant who presented with antenatal suspicion of congenital heart disease and fetal growth restriction. Postnatal echocardiography confirmed complex congenital heart disease (CHD) with admixture physiology, common atrium, small PDA, and pulmonary hypertension. The neonate exhibited persistent bradycardia (70–90 bpm) throughout the NICU stay, an unusual but clinically relevant finding in the context of complex CHD. Despite stable perfusion and acceptable systemic oxygenation, bradycardia persisted, prompting referral to a tertiary pediatric cardiac intervention center. This case highlights the challenges in correlating antenatal and postnatal diagnostic findings and emphasizes the importance of early specialized referral in complex CHD with conduction abnormalities.


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Singh T, Agarwal A. Silent Complexity: A Term IUGR Neonate & Common Atrium, Bradycardia & Hidden Admixture Physiology: A Comprehensive Case Report. Indian J Trauma Emerg Pediatr. 2025;17(2):53–6.


Licence:

Attribution-Non-commercial 4.0 International (CC BY-NC 4.0)

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.



Received Accepted Published
November 18, 2025 December 19, 2025 December 31, 2025

DOI: 10.21088/ijtep.2348.9987.17225.3

Keywords

Intrauterine Growth Restriction (IUGRNeonatal BradycardiaCyanotic Congenital Heart DiseaseCommon AtriumAdmixture PhysiologyMixing LesionAtrial Septal Defect Spectrum

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Received November 18, 2025
Accepted December 19, 2025
Published December 31, 2025

licence


Attribution-Non-commercial 4.0 International (CC BY-NC 4.0)

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.



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