Longitudinal echocardiography in newborns demonstrates a rapid decrease in right ventricular systolic time interval ratios during the first days of life, reflecting the physiological drop in pulmonary vascular resistance.
No takes yet. Share an insight, caveat, or question.
Rapid RVPEP/RVET decline informs age-specific neonatal echo interpretation; leaves open validation against outcomes in transitional physiology.
Oberhänsli et al. (1980) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: