That's my problem...I understand and can explain how the tube works to re-expand the lung, but not how the hole left behind doesn't cause a problem, just like the original hole did. I mean, I understand the purpose of the gauze for the exterior hole, but not the hole in the pleural sac.
Take my recent patient: suffered a pneumo after having a pacer placed. So, we're asuming something in the pacer procedure damaged the pleural sac, althogh we can't say for certain. Te patient understands all that, and after the docs explanation and my nifty dry erase board drawings, we can all understand how the lung deflated, postive and negative pressure, and how the tube will help it re-inflate. Then the family asks why there still won't be a hole in the lining when we pull the tube out. um....a miracle happens?
Most families/patients have just accepted that it works (like me), but I think the family RN who was at bedside was having the same questions I have always had and was hoping I, as the ER nurse nurse who does these more often, could answer the mystery. She read me wrong, alright!