| gptkbp:instanceOf | gptkb:diagnosis 
 | 
                        
                            
                                | gptkbp:detects | gptkb:arrhythmias myocardial infarction
 ischemia
 electrolyte disturbances
 
 | 
                        
                            
                                | gptkbp:developedBy | early 20th century 
 | 
                        
                            
                                | gptkbp:duration | few seconds 
 | 
                        
                            
                                | gptkbp:hasComponent | gptkb:limb_leads precordial leads
 
 | 
                        
                            
                                | gptkbp:interpretedBy | gptkb:physician 
 | 
                        
                            
                                | gptkbp:inventedBy | gptkb:Willem_Einthoven 
 | 
                        
                            
                                | gptkbp:measures | cardiac electrical activity 
 | 
                        
                            
                                | gptkbp:noninvasive | true 
 | 
                        
                            
                                | gptkbp:numberOfLeads | 12 
 | 
                        
                            
                                | gptkbp:performedBy | gptkb:physician 
 | 
                        
                            
                                | gptkbp:recognizedBy | gptkb:bundle_branch_block pericarditis
 conduction abnormalities
 drug toxicity
 electrolyte imbalance
 atrial enlargement
 ventricular hypertrophy
 
 | 
                        
                            
                                | gptkbp:recordedAt | gptkb:QT_interval gptkb:P_wave
 gptkb:QRS_complex
 gptkb:T_wave
 gptkb:PR_interval
 ST segment
 
 | 
                        
                            
                                | gptkbp:requires | gptkb:ECG_machine electrodes
 
 | 
                        
                            
                                | gptkbp:type | gptkb:V4 gptkb:V2
 gptkb:V3
 II
 III
 V5
 I
 V6
 V1
 aVF
 aVL
 aVR
 
 | 
                        
                            
                                | gptkbp:usedFor | recording electrical activity of the heart 
 | 
                        
                            
                                | gptkbp:usedIn | cardiology emergency medicine
 preoperative assessment
 routine health checkup
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Stryker_Physio-Control_LIFEPAK_12 gptkb:Stryker_Physio-Control_LIFEPAK_15
 gptkb:ECG_machine
 gptkb:chest_leads
 gptkb:limb_leads
 gptkb:resting_ECG
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | 12-lead ECG 
 |