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Nasal HFOV Versus Nasal CPAP to Reduce Post-extubation pCO2

2020년 7월 21일 업데이트: Christoph Czernik, Charite University, Berlin, Germany

Nasal High Frequency Oscillation Ventilation Versus Nasal Continuous Positive Airway Pressure to Reduce Post-extubation pCO2 in Very Low Birth Weight Infants: a Randomized Controlled Trial

To investigate whether nasal high frequency oscillation ventilation (nHFOV) immediately after extubation reduces the arterial partial pressure of carbon dioxide (paCO2) at 72 hours after extubation in comparison with nasal continuous positive airway pressure (nCPAP) in very low birth weight infants (VLBWs).

연구 개요

상세 설명

Randomized controlled clinical trial comparing nHFOV vs nCPAP immediately after extubation of VLBW infants.

Intervention and treatment protocol as described for the two study arms.

Definition of treatment failure (infant meets at least one criterion):

  • Sustained pCO2 >80 mmHg and pH <7.20 confirmed by arterial or capillary blood gas analysis in spite of optimized non-invasive respiratory support with maximum settings as defined above.
  • Fraction of inspired oxygen (FiO2) >0.6 to maintain peripheral oxygen saturation as measured by pulse oximetry (SpO2) at 90-94% in spite of optimized non-invasive respiratory support with maximum settings as defined above.
  • Reintubation (study patients may be intubated at any time, due to clinical considerations, with or without reaching another criterion of "treatment failure").

Sample size:

Assuming a variability of the paCO2 as previously reported for difficult-to-wean preterm infants in our unit (Czernik C, J Matern Fetal Neonatal Med 2012) and a treatment failure rate of 22% within 72 hours after extubation, we calculated a sample size of 34 patients in each study arm to detect a difference in the paCO2 of 7 mmHg, using a two-sided significance of 0.05 and a power of 0.8.

Randomization:

Sequence generation by an independent statistician and a study nurse. Block randomization using at least two different block sizes. Allocation concealment using sequentially numbered opaque sealed envelopes.

Data monitoring:

By an independent statistician.

연구 유형

중재적

등록 (실제)

6

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 장소

      • Berlin, 독일
        • Dpt. of Neonatology, Charité - Universitätsmedizin Berlin

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

5일 (어린이)

건강한 자원 봉사자를 받아들입니다

아니

연구 대상 성별

모두

설명

Inclusion Criteria:

  • Gestational age <32+0 weeks
  • Birth weight <1500 g
  • Received mechanical ventilation via an endotracheal tube for ≥120 h
  • Caffeine treatment according to unit guidelines
  • paCO2 <65 mmHg with pH >7.2
  • FiO2 25-40% to maintain SpO2 at 90-94%.
  • Time-cycled, pressure-controlled ventilation: PIP ≤22 cm H2O, PEEP ≤6 cm H2O; Volume guarantee ventilation: Working Ppeak ≤22 cm H2O, PEEP ≤6 cm H2O; High frequency oscillation ventilation: Pmean ≤12 cm H2O, Amplitude ≤30 cm H2O
  • Decision of the attending clinician to extubate

Exclusion Criteria:

  • Major congenital malformation requiring surgery
  • Duct-dependent congenital heart disease
  • Neuromuscular disease
  • Participation in another randomized controlled trial
  • Death before reaching the eligibility criteria
  • Hydrocortisone treatment at the time of enrolment
  • Chronological age >28 days

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 없음(오픈 라벨)

무기와 개입

참가자 그룹 / 팔
개입 / 치료
실험적: nHFOV

Immediately after extubation, nHFOV is provided via binasal prongs. Ventilator settings: Frequency set at 10 Hz, I:E ratio 33:66, amplitude 20 cm H2O, Pmean 8 cm H2O, flow 7 l/min. Set FiO2 to maintain SpO2 at 90-94%.

The weaning process is left to the discretion of the attending physician. Maximum amplitude 30 cm H2O, minimum frequency 9 Hz, maximum Pmean 8 cm H2O.

For infants in the nHFOV-group who "fail" nHFOV (see definition below), but do not need immediate reintubation, a non-invasive "Rescue-Treatment" may be provided. The decision to attempt "Rescue-Treatment", the mode of respiratory support and the ventilator settings used are at the discretion of the attending clinician.

Extubation to ventilator-derived nHFOV using binasal prongs
활성 비교기: nCPAP

Immediately after extubation, nCPAP is provided via binasal prongs. Ventilator settings: CPAP level set at 8 cm H2O, flow 7 l/min. Set FiO2 to maintain SpO2 at 90-94%.

The weaning process is left to the discretion of the attending physician. Maximum CPAP level 8 cm H2O, maximum flow 8 l/min.

For infants in the nCPAP-group who "fail" nCPAP (see definition below), but do not need immediate reintubation, "Rescue-nHFOV" via binasal prongs may be provided. The decision to attempt "Rescue-nHFOV" and the ventilator settings used are at the discretion of the attending clinician.

Extubation to ventilator-derived nCPAP using binasal prongs

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
paCO2 at 72 h After Extubation
기간: 64 h to 80 h
Partial pressure of arterial carbon dioxide assessed between 64 and 80 hours, and on average 72 hours.
64 h to 80 h

2차 결과 측정

결과 측정
측정값 설명
기간
pH at 2 h After Extubation
기간: within the first 6 h after extubation
within the first 6 h after extubation
paO2 at 2 h After Extubation
기간: within the first 6 h after extubation
within the first 6 h after extubation
paCO2 at 2 h After Extubation
기간: within the first 6 h after extubation
within the first 6 h after extubation
Base Excess at 2 h After Extubation
기간: within the first 6 h after extubation
within the first 6 h after extubation
pH at 72 h After Extubation
기간: 64-80 h after extubation
64-80 h after extubation
paO2 at 72 h After Extubation
기간: 64-80 h after extubation
64-80 h after extubation
Base Excess at 72 h After Extubation
기간: 64-80 h after extubation
64-80 h after extubation
Successful Extubation
기간: 72 h after extubation
Defined as the number of patients breathing spontaneously in their assigned treatment group for ≥72h without reaching the criterion of "treatment failure"
72 h after extubation
Treatment Failure
기간: within 7 days after extubation
Defined as the number of patients reaching the criterion of "treatment failure"
within 7 days after extubation
Reintubation
기간: within 7 days after extubation
Defined as the number of patients being reintubated
within 7 days after extubation
Highly Viscous Secretions
기간: within 72 hours after extubation
Defined as the documented number of episodes of airway obstruction due to highly viscous secretions per patient
within 72 hours after extubation
Other Adverse Effects
기간: until discharge
Incidences of the following adverse effects: Intraventricular hemorrhage III°-IV° (Papile), surgical necrotizing enterocolitis, pneumothorax, pulmonary interstitial emphysema, persistent ductus arteriosus requiring surgical closure, retinopathy of prematurity requiring laser treatment and/or injection of bevacizumab, death or moderate to severe bronchopulmonary dysplasia (Jobe) at 36 weeks' gestational age, periventricular leukomalacia
until discharge
Duration of Respiratory Support
기간: until discharge
Total duration of mechanical ventilation, total duration of supplemental oxygen, number of infants discharged with home oxygen
until discharge

기타 결과 측정

결과 측정
측정값 설명
기간
pH at 2 h After Switch to "Rescue Treatment"
기간: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
paO2 at 2 h After Switch to "Rescue Treatment"
기간: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
paCO2 at 2 h After Switch to "Rescue Treatment"
기간: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
Base Excess at 2 h After Switch to "Rescue Treatment"
기간: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
Successful Rescue
기간: 72 h after switch to "rescue" treatment
Defined as spontaneous breathing for ≥72h after starting "rescue" therapy, without reaching the criterion of "treatment failure"
72 h after switch to "rescue" treatment

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

수사관

  • 수석 연구원: Christoph Czernik, MD PhD, Charite University, Berlin, Germany

간행물 및 유용한 링크

연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2015년 1월 1일

기본 완료 (실제)

2017년 12월 31일

연구 완료 (실제)

2017년 12월 31일

연구 등록 날짜

최초 제출

2015년 1월 10일

QC 기준을 충족하는 최초 제출

2015년 1월 13일

처음 게시됨 (추정)

2015년 1월 16일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2020년 8월 5일

QC 기준을 충족하는 마지막 업데이트 제출

2020년 7월 21일

마지막으로 확인됨

2020년 7월 1일

추가 정보

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

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