My VATS was for a failed talc pleuradesis but some of the same recovery. You might find it more comfortable to sleep in a recliner, lying flat puts more strain on the ribs that were manipulated and the muscles that are injured in the course of the surgery. If you don't have a recliner, use a wedge pillow and tuck other pillows in to support the ribs. Also, keep a small pillow on hand to hug if you feel a cough or sneeze coming on.