What is the cardiothoracic ratio in children is –
Correct Answer: 50-55%
Description: “The cardiac silhouette occupies 50-55% of the chest width.
Cardiomegaly is present when the cardiothoracic (CT) ratio is more than 55%” he CTR is measured on a PA chest x-ray and is the ratio of maximal horizontal cardiac diameter to maximal horizontal thoracic diameter (inner edge of ribs / edge of pleura).
A normal measurement should be <0.5(50%).
Category:
Pediatrics
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