الفهرس 
WEANING from MECHANICAL VENTILATIONOnly 14 pages are availabe for public view
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Abstract
according to weaning criteria .assessment of hemodynamic changes during weaning was done by tracing and comparing vital data, echocardiography parameters and levels of serum BNP and troponin in all patients during pressure support ventilation and at the end of spontaneous breathing trial (SBT) for identification of changes during weaning and risk factors for weaning failure.
Results: There was statistically significant increase in heart rate, cardiac index and E/A ratio at the end of SBTin all studied patients with lower cardiac index in patients who failed weaning, significant increase in TAPSE at the end of SBT with lower TAPSE in patients who failed weaning. Levels of BNP1 during pressure support were significantly higher in patients who failed weaning however levels of troponin didn’t show significant changes.
Conclusion: Transthoracic echocardiography can accurately detect changes in central hemodynamics induced by the SBT. It helps the attending physician to identify patients at high risk of weaning failure, when documenting a lower cardiac index, low TAPSE values.