An M mode tracing through the superior vena cava (SVC) at the level where diameter measurements are taken. An M mode tracing through the superior vena.

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Presentation transcript:

An M mode tracing through the superior vena cava (SVC) at the level where diameter measurements are taken. An M mode tracing through the superior vena cava (SVC) at the level where diameter measurements are taken. The movement of both anterior and posterior walls can be seen through the cardiac cycle, with the anterior wall being most mobile. Martin Kluckow, and Nick Evans Arch Dis Child Fetal Neonatal Ed 2000;82:F182-F187 Copyright © BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health. All rights reserved.