What does it mean to have hyperinflated lungs? Does this mean that I'm going to die?

Air trapping. Means you have air trapping disease. The degree and severity of it can be determined by a complete pulmonary function test, the fef25-75, fev1, dlco, mvo2 and cat scan thorax. The prognosis and morbidity will depend on these as well as the current cardiac status. Need to consult pulmonologist.
No. Hyperinflation is most commonly used to describe an xray appearance of the chest. It can mean that the lungs are bigger than ordinary due to trapped air in the chest. Hyperinflation may be seen in asthma, emphysema or even in normal patients who are thin. Most of the time it is an indication to get your lungs checked out by a healthcare provider.