Helpful advice needed

Hello, my dad recently underwent suregry to one of his lungs. He had the tube removed after a couple of days and then his face and neck area bloated from what they said was air getting 'sucked' back in through the incision where the tube was! Now they say they will need to go back in and fix the lung again because it's leaking. Are these complications normal or is something worse going on that we should be pursuing another physician?