hypothesis : 1. The incident of dysplasia bronchopulmonary and/or death in 24-32 weekers babies on assist-control volume guarantee ventilation are lower in lung recruitment maneuver (LRM) group compare to control. 2. The serum levels of surfactant protein-D in 24-32 weekers babies on assist-control volume guarantee ventilation are lower in lung recruitment maneuver (LRM) group compare to control. 3. The serum concentration of CD-31+ and CD-42b- in 24-32 weekers babies on assist-control volume guarantee ventilation are lower in lung recruitment maneuver (LRM) group compare to control. 4. The right and left cardiac output in 24-32 weekers babies on assist-control volume guarantee mode are more higher in lung recruitment maneuver (LRM) group, than group that did not get LRM 5. The incident Patent Ductus Arteriosus in 24-32 weekers babies on assist-control volume guarantee ventilation are lower in lung recruitment maneuver (LRM) group compare to control. 6. The difference tc-pCO2 - PaCO2 , tcO2 index , and strong ion difference (SID) in 24-32 weekers babies on assist-control volume guarantee ventilation are lower in lung recruitment maneuver (LRM) group compare to control.
description of the protocol : 1. All Babies that meet inclusion criteria would immediately given surfactan. Babies will do echocardiography, blood gas analize, blood sample, transcutaneous monitor. After that babies will be randomized, the intervention group will get standart protocol + lung recruitment maneuver (LRM) and another group get standart protocol only. 2. The lung recruitment maneuver (LRM) will be done by increasing of PEEP 0,2 cm H2O every 3 minutes, until reach the opening pressure. After that PEEP decrease gradually until get the closing pressure. Than the investigators will back to the opening pressure for 3 minutes, and the final PEEP will be put back 0,2 above closing pressure. 3. After 3rd days (72 hours) babies, the investigators will exime serum levels of surfactan protein-D, CD-31+ and CD-42b- , blood gas , tc-pCO2 - PaCO2 , tcO2 index. 4. After that babies will observe within 28 days to detect Bronchopulmonary dysplasia
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
110
interventions involving device that may help to gradually lung development
Knowing the relationship between lung recruitment maneuver in 24-32 weeks preterm babies with the incidence of Bronchopulmonary dysplasia
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will have lower incidence of Bronchopulmonary dysplasia compare to control.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weekers, with their alveolar intergrity (serum levels of surfactan protein-D)
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will have lower serum levels of surfactan protein -D compare to control.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weekers, with their lung endothel intergrity (serum levels of CD-31+)
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will have lower serum concentrarion of CD-31+ compare to control.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weeks preterm babies with their lung endothel intergrity (serum levels of CD-42b-)
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will have lower serum concentrarion of CD-42b- compare to control.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weeks preterm babies with their micro circulation (oxygen index)
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will have higher oxygen index compare to control.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weeks preterm babies with their their micro circulation (tc-pCO2 - PaCO2 index)
preterm babies ( 24-32 weeks) with Lung Recrutment manuver will have transcutaneous-arterial partial carbon dioxide gap lower than control ( less than 6 mmHg ). babies with better microcirculation status will show less than 6 mmHg transcutaneous-arterial partial carbon dioxide gap.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weeks preterm babies with their incidence patent ductus arteriosus (PDA) significant
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will make lower incident of Patent Ductus Arteriosus compare to control.
Time frame: 12 weeks
Knowing the relationship between lung recruitment maneuver in 24-32 weeks preterm babies with their macro circulation
Preterm babies ( 24-32 weeks) with Lung Recruitment maneuver will make right and left cardiac output higher compare to control.
Time frame: 12 weeks
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