The effect of patent ductus arteriosus on coronary artery blood flow in premature infants: a prospective observational pilot study.

Objective: To compare coronary flows between premature infants with and without hemodynamically significant patent ductus arteriosus (hsPDA) and to determine if coronary flow is influenced by medical PDA treatment.

Design: Prospective, observational pilot study. Forty-three infants <32 weeks gestation underwent echocardiography when routinely indicated.

Effects of Phototherapy on Coronary Blood Flow in Healthy Neonates: A Pilot Study.

Background: Phototherapy has been reported to alter blood flow to various tissues. We hypothesized that during phototherapy the coronary blood flow will decrease because of a 'steal effect' to the periphery.

Objectives: To evaluate the effects of phototherapy on coronary blood flow in healthy, jaundiced, term neonates.