Clinical trial NCT01723683: Minimally Invasive Surfactant Therapy Followed by CPAP (MISTCPAP) in Preterm Infants With RDS
Official title: Minimally Invasive Surfactant Therapy Followed by Early CPAP (MISTCPAP) in Very Preterm Infants With RDS
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE2
Conditions: Respiratory Distress Syndrome
Keywords: Preterm infants
RDS
Surfactant
MISTCPAP
CPAP
Lead sponsor: China Medical University Hospital
Sponsor class: OTHER
First posted: 2012-11-08
Enrollment: 60
Sex: ALL
Minimum age (years): 1
Maximum age (years): 36
Standard ages: CHILD
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: There is a reducing incidence of pneumothorax, PIE and the combined outcome of death or BPD since the development of Surfactant therapy. A policy of intubation with surfactant administration and mechanical ventilation has become a standard therapy of infants at high risk of RDS. However, initial stabilization with CPAP and, if necessary, given rescue surfactant therapy has remained the standard therapy for preterm infants. Evidence reveals similar results with regard to mortality and neonatal morbidity between the above two strategies. The investigators intend to develop a method of minimally invasive surfactant therapy followed by early CPAP (MISTCPAP) in preterm Infants with high risk of RDS for improving the outcomes and reducing the incidence of BPD.

Detailed description: Background. Reducing incidence of pneumothorax, PIE and the combined outcome of death or BPD has been achieved since the development of Surfactant therapy. It is also approved that initial stabilization with CPAP and rescue surfactant administration, if necessary, resulted in less ventilator days and a trend towards lower risk of CLD. However, the number of infants who are started on CPAP but ultimately require intubation for the administration of surfactant within the first 72 hours remains high in the very preterm infants. Usually CPAP failure is due to unremitting RDS requiring surfactant therapy. Outcomes in the infants with CPAP as a whole could be improved further if the subgroup of infants showing early signs of surfactant deficiency was to receive an early dose of surfactant.

Objective. This study intents to develop a method of minimally invasive surfactant therapy followed by early CPAP (MISTCPAP) in preterm Infants with high risk of RDS for improving the outcomes and reducing the incidence of BPD. We propose a prospective randomized controlled trial to compare the MISTCPAP technique with the INSURE technique of surfactant administration, which involves intubation solely for the purpose of surfactant administration followed by immediate extubation to CPAP. The outcome of this trial could declare the effect of the intubation and positive pressure ventilation on the effectiveness of surfactant therapy.

Methods. This study will be approved by the Institutional Review Board (IRB) of CMUH.Very preterm infants (GA \< 32 wks) admitted to NICU at CMUH from 1 February 2012 to 31 January 2013 are enrolled for the study. Infants who stayed in the hospital for less than 10 days or those admitted after 24 hours of birth or with major congenital malformations will be excluded. Eligible infants will be randomized to allocate to the 2 groups after birth using simple randomization with sealed nontransparent envelopes after parental consent has been obtained. MISTCPAP group: The 16Gz 13 cm length Angio-Cath is used and marked at a point comparable to the level of infant's lip (weight in Kg + 6 cm as the routine ETT intubation) to give the operator mark to secure the Angio-Cath during the procedure and prevent it from going too far in or out of the trachea. The infant will be kept supine with upper part of body raised about 30 degree, an oro-gastric (OG) tube should be inserted,and the infant should not receive sedation. The CPAP may be removed transiently and the oxygen cannula or O2 flow over face may be given as indicated by saturation monitoring during the procedure. After inserting the Angio-Cath, the laryngoscope should be removed after stabilizing the Catheter with 2 fingers. Surfactant (Survanta©, Abbott, USA) 100 mg/kgBW, equivalent to 4 ml/kgBW per dose will be drawn to a 10 ml syringe and should be instillated via the Angio-Cath. Prior to the beginning of the clinical trial, every neonatal fellows should be trained to familiar the procedure under the supervision of the PI (BH Su), and the average duration of procedure has been achieved in the range of 1-3 minutes. All the vital signs, including Heart Rate, Respiratory Rate,Oxygen Saturation (SpO2) and FiO2 (Fraction of Inspired Oxygen) requirements should be monitored. After the procedure of surfactant instillation, the Angio-Cath should be removed and the nCPAP should be resumed with CPAP level keep constant at 5 cmH2O. The oro-gastric (OG) tube should be draw to check if any surfactant was instillated or reflexed back to the stomach. As to the INSURE group, the procedure should be according to the conventional surfactant treatment which involves intubation, surfactant(Survanta©, Abbott, USA) 100 mg/kgBW, equivalent to 4 ml/kgBW divided to 4 liquors to inject into 4 positions followed by amubagging and then extubation to CPAP. The clinical course in NICU of all studied infants, including intraventricular hemorrhage (IVH), retinopathy of prematurity (ROP), duration of ventilation, duration of hospital stay, infection, duration of oxygen requirement and BPD should be recorded.

Eligibility criteria: Inclusion Criteria:

1. Very preterm infants (GA \< 32 wks) admitted to NICU at CMUH from 1 February 2012 to 31 January 2013 are enrolled for the study
2. Less than 36 hours of age
3. Clinical signs of RDS with requirement of FiO2 ≥ 0.35

Exclusion Criteria:

1. Previous Intubation or in imminent need of IMV because of e.g. apnea, severe bradycardia or other deterioration not attributed to RDS, e.g. shock
2. Major congenital malformations
3. No parental consent

Primary outcomes:
measure: Requirement of rescue intubation and mechanical ventilation
timeFrame: 72 hours
Secondary outcomes:
measure: 1.Incidence of grade 3 /4 IVH (intraventricular hemorrhage),PVL (periventricular leucomalacia),ROP (retinopathy of prematurity) requiring treatment,NEC (necrotizing enterocolitis)stage 2 and 3
timeFrame: 8 weeks of life
measure: 2.Total duration of invasive and non-invasive ventilation (the extubation and weaning will follow the NICU guidelines), duration of oxygen supplementation until discharge
timeFrame: participants will be followed for the duration of hospital stay, an expected average of 8 weeks
measure: 3.Proportion of patients requiring oxygen supplementation at discharge 3.Proportion of patients requiring oxygen supplementation at discharge
timeFrame: participants will be followed for the duration of hospital stay, an expected average of 8 weeks
measure: 4.Proportion of surfactant related adverse events like tube blockade, episodes of desaturation, bradycardia, pulmonary hemorrhage, pneumothorax differ in the two groups
timeFrame: 1 wk of life
measure: 5.Total number of surfactant doses required compared in the two groups
timeFrame: 1 week of life
measure: 6.Incidence of CLD. CLD is assessed at 36 corrected weeks as NICHD definition and severity
timeFrame: at 36 corrected weeks
measure: 7.Death Comparison of outcomes beteween the 2 groups will use OR and 95% CIs.
timeFrame: 8 weeks of life
Other outcomes:
Locations:
city: Taichung
country: Taiwan
facility: China Medical University Children's Hospital
Study officials:
affiliation: Dept. of Pediatrics, China Medical University Hospital
name: Bai-Horng Su, MD, PhD
role: STUDY_CHAIR
affiliation: China Medical University Hospital
name: Hsieh-Yu Lin, MD
role: PRINCIPAL_INVESTIGATOR
References: