Normal right and left ventricular mass development during early infancy.

@article{Joyce2004NormalRA,
  title={Normal right and left ventricular mass development during early infancy.},
  author={James J. Joyce and Patricia I. Dickson and Ning Qi and Julie E Noble and J. Usha Raj and Barry G. Baylen},
  journal={The American journal of cardiology},
  year={2004},
  volume={93 6},
  pages={797-801}
}
The average newborn's right ventricular mass, indexed to body surface area, is approximately 20% above the adult level, consistent with in utero physiologic hypertrophy. In contrast, the left ventricular mass index is underdeveloped by about 30% at birth, resulting in a ratio of right to left ventricular mass that is nearly 75% higher than at maturity. Left ventricular mass index increases rapidly during the first 2 weeks of life and then more slowly thereafter, whereas the right ventricular… CONTINUE READING
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