Clinical trial NCT02748447: Automated Adjustment of Inspired Oxygen to Maintaining Regional Cerebral Oxygenation in Preterm Infants on Respiratory Support
Official title: Effects of Automated Adjustment of the Inspired Oxygen in Reducing the Risk of Regional Cerebral (rSO2) Hypo-oxygenation in Preterm Infants on Non Invasive or Invasive Respiratory Support
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Cerebrovascular Circulation
Premature Infants
Lead sponsor: ASST Fatebenefratelli Sacco
Sponsor class: OTHER
First posted: 2016-04-22
Enrollment: 60
Sex: ALL
Minimum age (years): 72
Maximum age (years): 7
Standard ages: CHILD
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: SUPPORTIVE_CARE

Brief summary: Background: fluctuation of cerebral blood flow and oxygenation in neonates who undergo intensive care is an important risk factor for risk of neurodevelopmental impairment. Near infrared spectroscopy (NIRS) allow direct measurements of cerebral tissue oxygenation. Automated Fraction of Inspired Oxygen (FiO2) adjustment can maintain arterial oxygen saturation (SpO2) within a target range and may reduce risk of fluctuation of cerebral oxygenation.

Aim of this study: to evaluate the efficacy of automated FiO2 adjustment in maintaining SpO2 within a target range and in reducing the risk of cerebral tissue hypo-oxygenation due to SpO2 fluctuations in preterm infants on invasive or non invasive respiratory support with supplemental oxygen.

Detailed description: Background: fluctuation of cerebral blood flow and oxygenation in neonates who undergo intensive care is an important risk factor for risk of neurodevelopmental impairment. Near infrared spectroscopy (NIRS) allow direct measurements of cerebral tissue oxygenation. Automated FiO2 adjustment can maintain arterial oxygen saturation (SpO2) within a target range and may reduce risk of fluctuation of cerebral oxygenation.

Aim of this study: to evaluate the efficacy of automated FiO2 adjustment in maintaining SpO2 within a target range and in reducing the risk of cerebral tissue hypo-oxygenation due to SpO2 fluctuations in preterm infants on invasive or non invasive respiratory support with supplemental oxygen.

Methodology: multicenter randomized cross-over clinical trial. The study will be carried out for almost 1 year .

Study centers: 7 Italian Neonatal Intensive Care Units (NICUs) Number of subjects: 60 infants to have a \>90% power, with an alpha of p=0.01, of detecting a 5% difference in %-time in the target range and a 50% difference in both SpO2 hyperoxic and hypoxic %-time.

Diagnosis and main inclusion criteria: preterm infants of 25+0-28+6 weeks of gestational age, requiring invasive or non invasive respiratory support and supplemental oxygen.

Other enrollment requirements: All infants will be enrolled between \>72 hours (end of transition period) and \</= 7 days. Expected to remain of the current mode of support for the 48-hour intervention period. Infants with major congenital anomalies, haemodynamic instability (patent ductus arteriosus-PDA) or requiring catecholamines treatment, clinical evidence of seizures or ongoing sepsis (positive blood culture) during the study, or within 24 hours prior of enrollment, will be excluded.

Study product:AVEA ventilator with closed-loop inspired oxygen control (CLiO2) automated FiO2 control option. An additional sensor will be attached to the infant's forehead for continuous measurement of cerebral tissue oxygen saturation (rStO2) with 5100C NIRS oximeter, Covidien.

Duration:24 hours each of manual control and CLiO2 control. Reference therapy:Manual control of FiO2 provided according to standardized guidelines.

Statistical Methodology: repeated measures mixed linear model with control from sequence and ventilation mode.

Concurrent safety oversight:Independent Data Safety Monitoring Board, with blinded review every 6 months or 50% enrollment, and after 15 subjects.

Eligibility criteria: Inclusion Criteria:

* preterm infants of 25+0-28+6 weeks of gestational age, requiring invasive or non invasive respiratory support and supplemental oxygen

Exclusion Criteria:

* infants with major congenital anomalies, haemodinamic instability, or requiring cathecolamines treatment,clinical evidence of seizures or ongoing sepsis (positive blood culture) during the study, or within 24 hours prior enrollment

Primary outcomes:
measure: the burden of hypoxemia on regional cerebral saturation (rStO2) calculated as area under curve (AUC-% second) below the individual median rStO2 range ( defined as +/-5% of the individual rStO2 median of each infant during each period
timeFrame: 24 hours
Secondary outcomes:
measure: AUC above the individual median rStO2 and time (% of the total recording time) within the SpO2 target range (91-95%)
timeFrame: 24 hours
Other outcomes:
Locations:
city: Milan
country: Italy
facility: V. Buzzi Childrens's Hospital - ASST FBF-SACCO
Study officials:
affiliation: ASST-FBF-Sacco
name: Gianluca Lista, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Kurth CD, McCann JC, Wu J, Miles L, Loepke AW. Cerebral oxygen saturation-time threshold for hypoxic-ischemic injury in piglets. Anesth Analg. 2009 Apr;108(4):1268-77. doi: 10.1213/ane.0b013e318196ac8e.
citation: Laptook AR, Salhab W, Allen J, Saha S, Walsh M. Pulse oximetry in very low birth weight infants: can oxygen saturation be maintained in the desired range? J Perinatol. 2006 Jun;26(6):337-41. doi: 10.1038/sj.jp.7211500.
citation: Claure N, D'Ugard C, Bancalari E. Automated adjustment of inspired oxygen in preterm infants with frequent fluctuations in oxygenation: a pilot clinical trial. J Pediatr. 2009 Nov;155(5):640-5.e1-2. doi: 10.1016/j.jpeds.2009.04.057.
citation: van Kaam AH, Hummler HD, Wilinska M, Swietlinski J, Lal MK, te Pas AB, Lista G, Gupta S, Fajardo CA, Onland W, Waitz M, Warakomska M, Cavigioli F, Bancalari E, Claure N, Bachman TE. Automated versus Manual Oxygen Control with Different Saturation Targets and Modes of Respiratory Support in Preterm Infants. J Pediatr. 2015 Sep;167(3):545-50.e1-2. doi: 10.1016/j.jpeds.2015.06.012. Epub 2015 Jul 2.