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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: UNLABELLED. Meshes: Blood Flow Velocity, Cerebral Arteries, Ductus Arteriosus, Patent, Humans, Infant, Newborn, Infant, Premature, Infant, Premature, Diseases, Infant, Very Low Birth Weight, Regression Analysis, Ultrasonography, Doppler, Color.
user
Is a patent ductus arteriosus associated with reduced middle cerebral artery blood flow velocity? Context: The study objective was to determine the effect of a patent ductus arteriosus (PDA) on cerebral blood flow velocity in ventilated, very low birth weight neonates, in the first 5 days of life. Sonography of the right middle cerebral artery and ductus arteriosus was performed using a colour Doppler technique. Statistical analysis was by stepwise regression. Thirty-one neonates without and 43 with a PDA, mean (SD) birth weight 1004 g +/- 192 and 1071 g +/- 227 respectively, were studied. The end diastolic and mean velocities were reduced (P = 0.008 and P = 0.129) and the resistive index was increased (P = 0.047) by a PDA. pH was inversely related to end diastolic and mean velocities (P = 0.015 and P = 0.003), suggesting that low pH may increase cerebral artery blood flow velocity.
assistant
A patent ductus arteriosus reduces middle cerebral artery blood flow velocity in very low birth weight neonates. Final Decision: yes