Impact of Different Modes of Noninvasive Ventilation on Regional Oximetry and Hemodynamics in Premature Newborn
Impact of Different Modes of Noninvasive Ventilation (NCPAP Versus TrPA) on Regional Cerebral and Splanchnic Oximetry as Measured by Near Infrared Spectroscopy (NIRS) and Hemodynamics Using Echocardiography in Premature Newborns
調査の概要
詳細な説明
Preterm babies under 32 weeks of gestational age usually needs to be supported with breathing machine because of different kinds of problems like lungs immaturity or infection. One type of breathing machine support is called CPAP(Continuous Positive Airway Pressure).This breathing support machine is connected to the nose to help preterm baby breathe. This machine blows air or an air/oxygen mixture through the nose and in to the baby's lung; this helps to keep baby's lungs fully open and makes it easier for the baby to breathe. There are two ways this machine can help the baby breathe - it can either blow the air/oxygen mixture at the same pressure all the time…we call that CPAP, or we can vary the pressure - we call that TrPA(Trigger Pressure Assist). Both methods have been in use in neonatal intensive care units(NICUs) for several years and both methods help with the breathing of babies.
The breathing machine (CPAP) makes the lungs better inflated. This inflation might affect the ability of the heart to push the blood to the organs through the blood vessels. Also we do not know whether there is any difference in the blood flow or oxygen delivery depending whether the baby is on CPAP or TrPA.
We will measure the heart function using Ultrasound (Echocardiography). To measure the efficiency of the flow of the blood through the vessels to the organs we will use Near Infra Red Spectroscopy (NIRS); this involves applying a sensor to the baby's skin - one on the forehead and one on the tummy and connecting the sensors to a machine which can measure the oxygen level in the organ under the skin.
While the baby is on CPAP, we will start monitoring oxygen saturation by applying NIRS sensors to the forehead and the abdomen. After 3 hours we will do echocardiography (ultrasound of the heart)to see any changes that might happen to the heart and blood vessels while the baby is on CPAP. Then, using the same machine, we will change the mode of respiratory support to TrPA. After another three hours, we will do another echocardiography (ultrasound of the heart), then we will stop NIRS monitoring and change the mode of respiratory support back to CPAP.
研究の種類
入学 (実際)
連絡先と場所
研究場所
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Manitoba
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Winnipeg、Manitoba、カナダ、R2H 2A6
- St. Boniface General Hospital
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Winnipeg、Manitoba、カナダ、R3A 1S1
- Health Sciences Center
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Preterm infants less than 34 weeks gestational age
- Requirement of CPAP or TrPA as a mode of respiratory support
Exclusion Criteria:
- Lack of parental consent
- Preterm infants more than 34 gestational weeks
- Preterm infants with congenital malformation
- Severe perinatal asphyxia
- Hemodynamically significant patent ductus arteriosus (PDA)
- Pulmonary hypertension
- Septic shock
- Any associated congenital heart diseases other than non-significant PDA or patent foramen ovale (PFO)
- Stage 2 or 3 necrotising enterocolitis (NEC)
- Intraventricular hemorrhage (IVH) grade 3 or 4
研究計画
研究はどのように設計されていますか？
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
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Preterm ≤ 32 weeks GA, on CPAP
Preterm infants less than 32 weeks gestational age requiring CPAP as a mode of respiratory support and admitted in the NICU.While the baby is on CPAP,tissue oxygen saturation monitoring will be started by applying NIRS(Near Infrared Spectroscopy Monitoring) sensors to the forehead and the abdomen.
After 3 hours,echocardiography(including Superior Mesenteric Artery Doppler) will be done while the baby is on CPAP.
Then, using the same machine, the mode of respiratory support will be changed to TrPA.
After another three hours,another echocardiography will be done,then NIRS monitoring will be stopped and the mode of respiratory support will be changed back to CPAP.
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Measurement of:
Measurement of cerebral and mesenteric regional oxygen saturation(rSO2) trends and data while the baby on CPAP or TrPA modes of noninvasive ventilation.
他の名前：
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in cardiac output
時間枠：Day 3 of life till 2 months of age
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Targeted neonatal Echocardiography will be done according to the guidelines accepted by the writing group of the American society of echocardiography in collaboration with associations of European pediatric cardiologists The following standard windows will be used:
Measurements:
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Day 3 of life till 2 months of age
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Changes in Superior Mesenteric Artery and Middle Cerebral Artery Doppler flow.
時間枠：Day 3 of life till 2 months of age
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Day 3 of life till 2 months of age
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Cerebral and mesenteric regional tissue oxygenation
時間枠：Day 3 of life till 2 months of age
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Cerebral and mesenteric rSO2 trends and data (obtained by NIRS) will be recorded along with simultaneous pulse oximeter trends and data.
The splanchnic-cerebral oxygenation ratio (SCOR) reflecting the ratio between regional cerebral oxygen saturation(rcSO2) and regional splanchnic oxygen saturation (rsSO2)(rcSO2/rsSO2) will be analyzed.
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Day 3 of life till 2 months of age
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協力者と研究者
スポンサー
捜査官
- スタディディレクター：Ganesh Srinivasan, MD、University of Manitoba
- スタディディレクター：Mary S Seshia, MD、University of Manitoba
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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