He had open heart surgery and ended up in hospital on 20May2021,He is in cardio rehab program and his doctor said he should get another shot of the; Difficulties since the second shot; Was exposed to covid a couple of times; This spontaneous case was reported by a consumer and describes the occurrence of CARDIAC DISORDER (He had open heart surgery and ended up in hospital on 20May2021,He is in cardio rehab program and his doctor said he should get another shot of the) in an 81-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Aortic valve disease NOS (deficiency leaking aortic valve) and Aneurysm enlargement.   On 23-Feb-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In February 2021, the patient experienced VACCINATION COMPLICATION (Difficulties since the second shot). On 20-May-2021, the patient experienced CARDIAC DISORDER (He had open heart surgery and ended up in hospital on 20May2021,He is in cardio rehab program and his doctor said he should get another shot of the) (seriousness criterion hospitalization). In 2021, the patient experienced EXPOSURE TO SARS-COV-2 (Was exposed to covid a couple of times). The patient was hospitalized from 20-May-2021 to sometime in 2021 due to CARDIAC DISORDER. The patient was treated with Surgery (Open heart surgery) for Cardiac disorder. At the time of the report, CARDIAC DISORDER (He had open heart surgery and ended up in hospital on 20May2021,He is in cardio rehab program and his doctor said he should get another shot of the), VACCINATION COMPLICATION (Difficulties since the second shot) and EXPOSURE TO SARS-COV-2 (Was exposed to covid a couple of times) outcome was unknown.            No concomitant medication details was reported. No treatment medication details was reported.  The patient had open heart surgery on 20-May-2021 and ended up in the hospital. Is in cardiac rehab and his doctor advised to get the third dose of the vaccine.  Company Comment: This case concerns an 81-year-old male patient, with medical history of Aortic valve disease NOS (deficiency leaking aortic valve) and Aneurysm enlargement, who experienced serious unexpected event of CARDIAC DISORDER. The event occurred approximately 3 months after the administration of the second dose of Moderna COVID-19 Vaccine. The rechallenge was not applicable. Patient´s medical history of Aortic valve disease NOS (deficiency leaking aortic valve) and Aneurysm enlargement, remains a confounder. The benefit-risk relationship of Moderna COVID-19 Vaccine is not affected by this report.; Sender's Comments: This case concerns an 81-year-old male patient, with medical history of Aortic valve disease NOS (deficiency leaking aortic valve) and Aneurysm enlargement, who experienced serious unexpected event of CARDIAC DISORDER. The event occurred approximately 3 months after the administration of the second dose of Moderna COVID-19 Vaccine. The rechallenge was not applicable. Patient´s medical history of Aortic valve disease NOS (deficiency leaking aortic valve) and Aneurysm enlargement, remains a confounder. The benefit-risk relationship of Moderna COVID-19 Vaccine is not affected by this report.