Fig. 3: Study flow chart. | Pediatric Research

Fig. 3: Study flow chart.

From: Cardiac adaptations to patent ductus arteriosus ligation in preterm infants: a speckle-tracking study

Fig. 3

In the PDA group, 32 preterm infants underwent PDA surgery at a gestational age of 23–33 weeks (November 2019 to December 2022) in our hospital. Two patients were excluded owing to the presence of multiple anomalies. Thirty-two patients were included in the final analysis, of whom 32 survived (100%). In the non-PDA group, between October 2020 and 2022, 82 inborn preterm infants were admitted to our hospital. Their gestational ages ranged from 23 to 28 weeks, and those aged between 29 and 31 weeks who required mechanical ventilation were also included. Of these, 46 patients were excluded for various reasons. As a result, 36 patients were ultimately included in the non-PDA group and 35 (97.2%) of them survived. PDA patent ductus arteriosus.

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