 In the chronic stage , treatment involves managing the clinical manifestations of the disease . For example , pacemakers and medications for irregular heartbeats , such as the anti @-@ arrhythmia drug amiodarone , may be life saving for some patients with chronic cardiac disease , while surgery may be required for megaintestine . The disease cannot be cured in this phase , however . Chronic heart disease caused by Chagas disease is now a common reason for heart transplantation surgery . Until recently , however , Chagas disease was considered a contraindication for the procedure , since the heart damage could recur as the parasite was expected to seize the opportunity provided by the immunosuppression that follows surgery . 
 In the chronic stage , treatment <a href='uninflect' title='1'><mark>involves</mark></a> managing the clinical manifestations of the disease . For example , pacemakers and medications for irregular heartbeats , such as the anti @-@ arrhythmia drug amiodarone , may be life saving for some patients with chronic cardiac disease , while surgery may be required for megaintestine . The disease cannot be cured in <a href='None' title='2'><mark>this</mark></a><a href='negative_concord' title='3'><mark>phase</mark></a> , however . Chronic heart disease caused by Chagas disease <a href='drop_aux' title='4'><mark>is</mark></a>now a common reason for heart transplantation surgery . Until recently , however , Chagas disease was considered a contraindication for the procedure , since the heart damage could recur as the parasite was expected to seize the opportunity provided by the immunosuppression <a href='null_relcl' title='5'><mark>that</mark></a><a href='uninflect' title='6'><mark>follows</mark></a> surgery . 
In da chronic stage , treatment involve managing tdaclinical manifestations of the disease . For example , pacemakers and medications fa irregular heartbeats , such as the anti @-@ arrhythmia drug amiodarone , may be life saving for sum patients with chronic cardiac disease , while surgery may be required ffamegaintestine . The disease cannot b cured in no phase , however . Chronic heart disease caused by Chagas disease now a common reason fofireart transplantation surgery . untill recently , however , Chagas disease was considered a contraindication fofahe procedure , since thdaeart damage could recur as thedarasite was expected to seize the opportunity provided by the immunosuppression follow surgery .