I have to thank you so much, apparently you were godsend and life saver. Because of you I went to the ER. When they did my gastric bypass, they found a Heidel hernia. When they corrected this item, it caused a pneumothorax and air trapped around my heart, all extremely life threatening. Also the swelling in my face, neck and chest is due to trapped air that they call rice crispies ?. Apparently this is extremely rare, but I want to make people aware this can happen. I'm currently in ICU with a chest tube, waiting to figure out what they are going to do with my heart.