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Updated: Jul 3, 2026

Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet
Published on: November 4, 2015
Transient right ventricular hypertrophy in an extremely low birth weight infant resembling duct-dependent pulmonary
Ryo Nakagawa1, Shiki Ogawa2, Hiroyuki Kitano2
1Pediatrics, https://ror.org/02cv4ah81Ishikawa Prefectural Central Hospital, Japan.
Abstract:
We report an extremely low birth weight infant (494 g, 23 weeks + 1 day) with transient right ventricular hypertrophy, initially suspected as pulmonary atresia with ductus-dependent circulation. Patent ductus arteriosus management was complicated, requiring low-dose PGE1 and eventual surgical ligation. Serial echocardiography revealed progressive right ventricular dilation and normalisation of function, confirming transient hypertrophy. This case highlights diagnostic challenges and the importance of repeated cardiac assessment in extremely preterm infants.
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