Cumulative Fluids Balance and Ventilator Associated Events

\- We will calculate cumulative fluid balance as daily fluid balance within four days of the event of interest. Cumulative fluid balance will be computed as the sum of daily fluid balances over the previous 24 hours, calculated by total fluid input minus total fluid output on a specific day of ICU admission over the first four calendar days of mechanical ventilation. Insensible fluid loss, such as perspiration or evaporative water loss related to respiration will not be routinely assessed and will not be included in the calculation of cumulative fluid balance. The cumulative fluid balance from day 0 to day 1 will be labelled as day 1, and the following days as day 2 and day 3. Cumulative fluid balance at day 3 refers to the cumulative fluid balance during the first four calendar days.