| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Electrocardiographic procedure AND/OR stress testing | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some |  | 
| Intracardiac electrophysiologic procedure with ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 24 Hour ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| ECG ST segment monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| ECG automated dysrhythmia monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Ellestad protocol | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Ramp protocol | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Pepper protocol | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, intracardiac, His bundle recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, intracardiac, His bundle recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Electrocardiogram, single lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Tilt table test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Left ventricular recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Cardiac mapping | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Stimulation of carotid sinus with simultaneous electrocardiographic monitoring (procedure) | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram with maximal exercise test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiographic procedure | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Bundle of His recording (procedure) | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Bundle of His recording (procedure) | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Monitoring of cardiac output by ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram with sub-maximal exercise test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Signal-averaged electrocardiography | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Continuous electrocardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram monitoring, 10 hour portrait | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Masters' stress test, two-step | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram with exercise test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Phonocardiogram with apex cardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Apexcardiography | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, esophageal lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, intracardiac | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiographic recording from artificial pacemaker | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, rhythm | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Right ventricular recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Electrocardiogram with vectorcardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Vectorcardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Fetal electrocardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Phonocardiogram with ECG lead, interpretation and report | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Tracing of carotid pulse with ECG lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Tracing of carotid pulse with ECG lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Monitoring of ECG, pressure, blood gases and cardiac output | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Apexcardiogram with ECG lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Intra-atrial recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Intraoperative cardiac pacing and mapping | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Monitoring of ECG and pressure during major surgery | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Monitoring of ECG at surgery | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - general | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - improved | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - no new changes | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Continuous ECG monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 12 lead ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - general - NOS | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiography NOS | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 18 lead electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Removal of electrocardiography loop recorder (procedure) | Direct device | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Cardiomemo electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 48 hour ambulatory electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Holter extended electrocardiographic recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - no new changes | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Holter extended electrocardiographic recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 48 hour ambulatory electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Pharmacologic and exercise stress test (procedure) | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Ramp protocol | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Monitoring of cardiac output by ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Cardiomemo electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Masters' stress test, two-step | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Vectorcardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Monitoring of ECG, pressure, blood gases and cardiac output | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, esophageal lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram with exercise test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Electrocardiographic recording from artificial pacemaker | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram with vectorcardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Left ventricular recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiographic procedure | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 18 lead electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Monitoring of ECG at surgery | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Ambulatory ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Tracing of carotid pulse with ECG lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Electrocardiogram, single lead | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 3 lead electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, intracardiac, His bundle recording | Using device (attribute) | True | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| 15 lead electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram, rhythm | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Ellestad protocol | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Tilt table test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Phonocardiogram with ECG lead, interpretation and report | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - general - NOS | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram - general | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Fetal electrocardiogram | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram monitoring, 10 hour portrait | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Electrocardiogram with sub-maximal exercise test | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Electrocardiogram - improved | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| ECG automated dysrhythmia monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| ECG ST segment monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Intracardiac electrophysiologic procedure with ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Cardiac monitor removal | Direct device | True | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| 12 lead ECG | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 | 
| Bundle of His recording (procedure) | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Pepper protocol | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Right ventricular recording | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 2 | 
| Electrocardiographic monitoring | Using device (attribute) | False | Electrocardiographic monitor and recorder | Inferred relationship | Some | 1 |