LATEST: Isaac Hanson is recovering in hospital after life-saving heart surgery. The brother group Hanson had to call off their gig on Wednesday (03Oct07) in Tulsa, Oklahoma after the 27-year-old was taken to hospital with shoulder and chest pains. Isaac has suffered before from the potentially lethal pulmonary embolism. It blocks arteries pumping blood and can cause heart failure. But after the successful surgery operation, he is due to perform on stage on Monday (08Oct07) at Knoxville, Tennessee. The band's publicist says, "The life-saving surgery was performed by Dr. Bradley Grimsley, who was extremely satisfied with the results and expects Isaac to make a full and swift recovery."