title: Surfactant bolus instillation: effects of different doses on blood pressure and cerebral blood flow velocities.
abstract: Fifteen preterm infants suffering from respiratory distress syndrome were randomly allocated to receive either high-dose (200 mg/kg) or low-dose (100 mg/kg) surfactant treatment. Retreatments were done with the low dose. Blood pressure, blood gases and cerebral blood flow velocities were determined before and after 24 bolus instillations. With the high dose mean blood pressure and mean cerebral blood flow velocity dropped significantly. With the low dose only mean cerebral blood flow velocity decreased; the course was unrelated to blood pressure or PCO2 fluctuations. The mechanisms leading to the observed circulatory changes after surfactant instillation remain unclear.
authors.affiliation: Abteilung Neonatalogie, Universitätsklinikum Rudolf Virchow, Freie Universität Berlin, Deutschland.
authors.forename: M
authors.initials: M
authors.lastname: Rey
authors.forename: H
authors.initials: H
authors.lastname: Segerer
authors.forename: C
authors.initials: C
authors.lastname: Kiessling
authors.forename: M
authors.initials: M
authors.lastname: Obladen
mesh_terms: D001783:Blood Flow Velocity / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects*; D002560:Cerebrovascular Circulation / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011663:Pulmonary Surfactants / Q000008:administration & dosage* / Q000009:adverse effects* / Q000627:therapeutic use; D012127:Respiratory Distress Syndrome, Newborn / Q000188:drug therapy*
chemical_list: D011663:Pulmonary Surfactants