To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure firstname.lastname@example.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Respiratory weaning is classified into simple weaning, difficult weaning and prolonged weaning. When the patient successfully completes the spontaneous breathing trial (SBT), weaning can then be started using one of the three ways: moving from assist control to higher levels of pressure support ventilation, using synchronized intermittent mandatory ventilation with an initial higher rate which can be decreased over time, and continuing full ventilatory support with intermittent trials of low levels of pressure support or continuous positive airway pressure (CPAP). The chapter outlines the role of tracheostomy and non-invasive ventilation in weaning. Proportional assist ventilation (PAV) is a form of synchronized partial ventilatory support in which the ventilator generates support in proportion to the patient's instantaneous effort. Adaptive support ventilation (ASV) is based on a computer-driven closed loop regulation system of ventilator settings which are responsive to changes in both the respiratory system mechanics and spontaneous breathing efforts.