| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Atrial septal defect murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart murmur absent | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart sounds normal | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Finding of palpation of heart | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Finding of cardiac thrill | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Tuberculosis of heart | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Aortic murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Cardiac measure | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Cardioversion by intracardiac catheter | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Heart sounds abnormal | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Neoplasm of heart AND/OR pericardium | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Summation gallop | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart murmur, categorized by intensity | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart murmur, categorized by timing | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart murmur, categorized by pitch | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart murmur, categorized by quality | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Heart murmur, categorized by duration | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Infectious disease of heart | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Bacterial infectious disease of heart | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Structural disorder of heart | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Reduced intensity of first heart sound, S>1< | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Angiocardiography by cineradiography | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Check artificial pacemaker for electrode impedance | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Combined right and left heart angiocardiography | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiac murmur, intensity grade III/VI | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Machinery murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Fetal echocardiography, real time with image documentation (2D) with M-mode recording | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 3 | 
| Alteration in heart rate | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Abnormal cardiac rate | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Abnormal heart beat | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Irregular heart beat | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Irregular heart rate | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Removal of cardiac pacemaker from epicardium with replacement of atrial and/or ventricular leads | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| P pulmonale by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Donor cardiectomy-pneumonectomy with preparation and maintenance of homograft | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 5 | 
| Graham Steell murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Recurrent rheumatic heart disease | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Low ventricular voltage by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Gallop rhythm | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Anteroseptal infarction by EKG | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Laceration of heart with open wound into thorax AND without penetration of heart chambers | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 2 | 
| Repair of cardiac pacemaker | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Presystolic murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Quinidine toxicity by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Check artificial pacemaker for waveform artifact | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Cardiac murmur, intensity grade IV/VI | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| ST segment depression | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Normal first heart sound, S>1< | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Atrial cardioversion | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Danish type familial amyloid cardiomyopathy | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Left ventricular ST changes | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Narrow QRS complex | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Angiocardiography by serialography, multi-plane | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Angiocardiography, positive contrast | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Electrocardiographic axis perpendicular to frontal plane | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Diastolic murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Implantation of artificial heart | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Systolic murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Selective angiocardiography | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Widened split of first heart sound, S>1< | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Indeterminate axis by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Check artificial pacemaker for amperage threshold | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Insertion of permanent atrial pacemaker with transvenous electrodes | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of permanent pacemaker with transvenous electrodes, atrio-ventricular sequential | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Tachycardia | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Angiocardiography | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Revision of automatic implantable cardioverter/defibrillator | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Replacement of electronic heart device, pulse generator | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiac blood pool imaging | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 2 | 
| Cardiac murmur, intensity grade II/VI | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Cardiac murmur, intensity grade V/VI | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Radionuclide study of coronary blood flow | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 2 | 
| Diminished left ventricle forces by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Negative contrast cardiac roentgenography | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Left axis deviation greater than -90 degrees by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Plateau cardiac murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Digitalis effect by EKG | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Pain in heart | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Anterolateral infarction by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Crescendo cardiac murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| To-and-fro murmur | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Diminished right ventricle forces by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Fixed split of second heart sound | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Right ventricular ST changes | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Fourth sound gallop | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Removal of cardiac pacemaker electrodes with replacement | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic endocarditis due to rheumatic heart disease | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Repositioning of cardioverter/defibrillator leads | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Resection of external cardiac tumor | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiac murmur, intensity grade I/VI | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| P mitrale by electrocardiogram | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Shortened PR interval | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Protodiastolic gallop with abnormally audible third heart sound | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Third heart sound, S>3<, inaudible | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Electrocardiographic axis finding | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Primary familial dilated cardiomyopathy | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subendocardial infarction by EKG | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  | 
| Angiocardiography of left heart | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiac flow imaging | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 2 | 
| Insertion of permanent pacemaker with transvenous electrodes, ventricular | Procedure site | False | Cardiac structure | Inferred relationship | Existential restriction modifier | 1 | 
| Electrocardiographic ST segment changes | Finding site | False | Cardiac structure | Inferred relationship | Existential restriction modifier |  |