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NCT07496125
Invasive mechanical ventilation (IMV) is a life-saving supportive therapy for patients with acute brain injury, which accounted for nearly one-fifth of all mechanically ventilated patients in the intensive care unit (ICU). However, prolonged exposure to IMV is consistently associated with an increased risk of ventilator-related complications and adverse outcomes. Accordingly, alongside the initiation of IMV, timely and safe liberation from ventilator should be considered. Nevertheless, data detailing the weaning process and its associated outcomes in mechanically ventilated patients with ABI remain scarce. To address this gap, the investigators conducted an observational study aimed at characterizing the ventilator weaning process and outcomes in patients with ABI receiving IMV, using the modified WIND classification.
NCT07450404
Critically ill patients admitted for acute brain injury are exposed to many heath-care associated infections such as ventilator associated pneumoniae (VAP). The PROHYVAP study, published in 2024 reported that a single dose of CEFTRIAXONE as an antibiotic prophylaxis could reduce the incidence of early VAP (VAP that occured between day 2 and day 7 of mechanical ventilation). However, patients with acute brain injury also presented frequently augmented renal clearance (ARC), which could affect the pharmacokinetic and pharmacodynamic target attainment (PK/PD) of antibiotic prophylaxis. This study aims to analyse the PK/PD target attainment after one dose of CEFTRIAXONE in critically ill patients with acute brain injury and to describe the effect of ARC on PK/PD target attainment during early VAP.
NCT02670733
There are concerns that the use of positive end-expiratory pressure (PEEP) for the treatment of pulmonary complications in patients with brain injury may potentially elevate intracranial pressure (ICP), and deteriorate neurological status. It is suggested that both respiratory system compliance and ventricular compliance would contribute to the elevation of ICP when PEEP increases. In theory, PEEP may cause elevation of ICP by increasing intrathoracic pressure and diminish venous return. However, the transmission of PEEP into thoracic cavity depends on the properties of the lung and chest wall. Experimental study showed that when chest wall compliance is low, PEEP can significantly increases intrathoracic pressure; whereas low lung compliance can minimize airway pressure transmission. It is generally recognized that the lung compliance decreases in acute respiratory distress syndrome (ARDS) patients due to extensive alveolar collapse. However, it has been report that the elastance ratio (the ratio between elastance of the chest wall and the respiratory system, where elastance is the reciprocal of compliance) may vary from 0.2 to 0.8. Therefore, it is important to distinguish the compliance of the chest wall and the lung when investigating the effect of PEEP on ICP. Because intrathoracic pressure (pleural pressure) is difficult to measure in clinical situations, esophageal pressure (Pes) is considered as a surrogate of intrathoracic pressure. In the present study, the investigators determine the effect of PEEP on intrathoracic pressure and ICP by Pes measurement.