Related by context. Frequent words. (Click for all words.) 75 electrocardiogram 67 ECG 64 echocardiogram 53 angiogram 52 defibrillator 51 CAT scan 50 cardiac catheterization 50 ultrasound 49 CT scan 49 oxygen saturation 48 heartbeat 48 MRIs 47 arrhythmia 46 biopsy 46 irregular heartbeat 46 MRI 45 catheterization 45 ultrasounds 45 heartbeats 45 CAT scans 45 cardiac 45 cardiopulmonary resuscitation 44 blood glucose 44 MRI scan 44 defibrillators 44 chest X rays 44 automated external defibrillator 43 chest X ray 43 cath lab 43 angiography 43 CT scans 43 colonoscopy 43 echocardiography 43 pulmonary function 43 pulse 42 MRI scans 42 cardiologists 42 PET scan 42 CPR 42 respiration 42 pacemaker 41 heart murmur 41 sonogram 41 defibrillation 40 abnormality 40 cardiologist 40 vitals 40 acute coronary syndrome 40 abnormal 40 scans 40 stethoscope 40 apnea 40 sudden cardiac death 40 blood sugar 40 coronary disease 40 infarction 40 Ultrasound 40 irregular heartbeats 40 mammogram 40 Pap smear 39 systolic 39 brain scans 39 coronary artery disease 39 biopsies 39 sonography 39 MRI scanner 39 pedometers 39 X rays 39 X ray 39 Doppler 39 scan 39 anticoagulation 38 angioplasty 38 Defibrillators 38 sudden cardiac arrest 38 computed tomography 38 chest compressions 38 diagnoses 38 x rays 38 invasive procedure 38 endoscopy 38 abnormalities 38 PET scans 38 chest pains 38 asymptomatic 37 beta blockers 37 sleep apnea 37 glucose 37 diagnostic 37 appendicitis 37 physicals 37 cardiac arrest 37 blocked arteries 37 cardiovascular 37 arrhythmias 37 heart 37 polygraph 37 revascularization 37 blood 37 checkup 37 palpitations