https://www.vetnurse.co.uk/f/clinical-discussions/18060/circuit-questionsI have confused myself I think with reading a few articles on some human circuits I think can I clarify that to give a breath to an animal when under g.a ( if there not breathing regularly) you will close APL valve let the reservoir bag fill anden-USTelligent Community 10https://www.vetnurse.co.uk/thread/132747?ContentTypeID=1Fri, 06 Jul 2012 16:46:26 GMT1a0763ec-3885-442c-853e-6cef656dfec5:6bb9bf58-4a43-4037-a23e-0ccf312c0238Stuart Ford-Fennah<p>Hi Lauren,</p> <p>Your absolutly right you close the APL valve allow the bag to fill a bit then inflate the lungs - make sure you watch the chest as you need to make sure the chest moves. As youve pointed out endure you dont squeeze too hard as you may cause baro trauma. usually the valves on the semi dispsable circuits such as thouse from intersurgical have a pressure limiting apl valve but these are still set far to hing for our patients lungs and are more about equipment protection aposed to patient protection.</p> <p>What you do need to question each time you have to do this though is <span style="text-decoration:underline;">Why </span>do you need to provide IPPV..</p> <p>Stu</p><div style="clear:both;"></div>