Paeds Vivas · investigations-procedures-and-technology
Echocardiography fundamentals for general paediatricians — branching viva
Branching viva on paediatric echocardiography fundamentals: the modalities and what each shows, the Z-score normalisation, the systematic report read, the modified Bernoulli equation, and the prostaglandin resuscitation of the duct-dependent neonate.
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RACP DCEMRCPCH ClinicalRCPSC Pediatrics
Prompt
A paediatric clinic: a six-year-old boy is referred after a GP heard a heart murmur. The cardiologist's echocardiogram report describes a bicuspid aortic valve with a peak continuous-wave Doppler velocity of 4 metres per second across the valve, a normal left ventricular Z-score, and a normal aortic root. The examiner asks how you would systematically read the report, why the Z-score matters, and what the velocity means — then branches to the echo modalities and their roles, to the distinction between the comprehensive study and the focused point-of-care ultrasound, and finally to the resuscitation of a duct-dependent neonate with prostaglandin.
Opening question
This six-year-old boy's echo report describes a bicuspid aortic valve with a peak continuous-wave Doppler velocity of 4 metres per second. Walk me through the systematic approach you would use to read this report, and tell me why every chamber dimension must be interpreted against a Z-score rather than the raw millimetres. [1] [7]
References5ShowHide
- [1]Lopez L, Saurers DL, Barker PCA, et al. Guidelines for Performing a Comprehensive Pediatric Transthoracic Echocardiogram: Recommendations From the American Society of Echocardiography J Am Soc Echocardiogr, 2024.PMID 38309834
- [2]Via G, Hussain A, Wells M, et al International evidence-based recommendations for focused cardiac ultrasound J Am Soc Echocardiogr, 2014.PMID 24951446
- [7]Romanowicz J, Ferraro AM, Harrington JK, et al. Pediatric Normal Values and Z Score Equations for Left and Right Ventricular Strain by Two-Dimensional Speckle-Tracking Echocardiography Derived from a Large Cohort of Healthy Children J Am Soc Echocardiogr, 2023.PMID 36414123
- [9]Ford B, Lara S, Park J Heart Murmurs in Children: Evaluation and Management Am Fam Physician, 2022.PMID 35289571
- [12]Grotenhuis HB, Mertens LL Recent evolutions in pediatric and congenital echocardiography Curr Opin Cardiol, 2015.PMID 25398044