The 5% was quoted taking into consideration of your entire presentation including age, diagnosis, previous treatment etc.  The complications include different entities such as infection and  irregular heart rate that are easily fixable with medication.  Post-operative pneumonia is a complication that we try to avoid by having you be very aggressive in the pos-operative period with deep breathing, coughing and increasing activity.  Post-operative death is a potential complication but not likely and would be considered below the 5%.  Our focus though will be on preventing the post-op pneumonia as that is the most probable and serious of complications within the 5%.