View clinical trials related to Ventilator Weaning.
Filter by:The purpose of this study is to test the association between ICU acquired weakness as evaluated by dominant handheld dynamometry (handgrip) and the mechanical ventilation weaning outcome
Difficult weaning from ventilation and extubation failure are major issues in intensive care, concerning 30% and 12% of patients respectively. These can be partly explained by the lack of accuracy of spontaneous breathing trial (SBT) failure criteria to predict extubation failure. The investigators performed a pilot study to evaluate transcutaneous carbon dioxide pressure (tcPCO2) monitoring during SBTs. The results showed that the difference between maximum and initial tcPCO2 (or ΔtcPCO2) was significantly higher in the group of patients who failed SBTs according to the usual criteria. Moreover, the results suggested that ΔtcPCO2 could be an accurate and early criterion for SBT failure. The size of the study could not examine ΔtcPCO2 regarding extubation failure. Therefore, the main objective of this study is to determine if Δ tcPCO2 during SBTs is associated with extubation failure.
Switching from positive airway pressure ventilation to spontaneous ventilation during weaning from mechanical ventilation, pulmonary edema may occur and in this case, doppler echocardiographic (U/S) indices of cardiac dysfunction correlates with the concentration of fluid in interstitial space. Forty consecutive mechanically ventilated critical ill patients who fulfill criteria for weaning from mechanical ventilation, will be included in this study. All patients will be evaluated daily and when the patients fulfill weaning criteria them they will undergo a 2-hour spontaneous breathing trial (SBT) through a T-piece. Before and after SBT cardiopulmonary function will be assessed by thermodilution and echocardiography. In patients with preserved LV systolic function, an echocardiographic index of diastolic dysfunction (E/Em ratio) before preforming SBT may identify high risk patients for increasing extravascular water in weaning. In addition, the investigators expect to find positive correlations (p<0.05) between pulmonary extravascular lung water and echocardiographic indices (such as E/Em ratio) during SBT.
We aimed to verify the potencial role of bedside lung ultrasound findings of critically ill patients candidates to liberation from mechanical ventilation in predicting weaning outcomes. The analysis will be taken in two times: immediately before and at the and spontaneous breathing trial.
Objective: To compare termination criteria (TC) of pressure support ventilation (PSV). Design: Randomized cross-over clinical trial. Setting: Intensive Care Units. Patients: Sixteen patients on PSV with ability to answer a visual analog scale (VAS). Protocol and Measurements: Each patient was ventilated with two different TC ventilators, fixed and automatic, with measurements of ventilatory mechanic variables, breathing comfort and asynchrony patterns.
The purpose of the study is to determine whether dexmedetomidine is a more effective medication than haloperidol in the treatment of agitation and delirium in patients receiving mechanical ventilation in an intensive care unit. Haloperidol is a medication conventionally used for this purpose. The investigators will study only patients who have recovered from their illness to the point that, were it not for agitation and delirium, they would no longer require mechanical ventilation. The investigators hypothesize that patients receiving dexmedetomidine will be able to discontinue mechanical ventilation earlier than those receiving haloperidol.
This bicentric, randomized, controlled trial examines the effectiveness of an automatic control of pressure support ventilation (SmartCare/PS) in critically ill patients.