Related by context. Frequent words. (Click for all words.) 68 arrhythmia 66 irregular heartbeat 60 sudden cardiac death 57 congestive heart failure 55 pneumonia 55 cardiac arrest 54 kidney failure 54 atrial fibrillation 54 sudden cardiac arrest 54 blood clot 53 emphysema 53 arrhythmias 52 pulmonary hypertension 52 pancreatitis 52 blood clots 52 internal bleeding 52 lung infection 52 blood thinners 51 sleep apnea 51 acid reflux 51 renal failure 51 ailment 51 migraines 51 heart disease 50 bacterial infection 50 lung disease 50 migraine headaches 50 breathing difficulties 50 colic 49 heart palpitations 49 chest pains 49 coronary artery disease 49 brain aneurysm 49 pulmonary embolism 49 angina 49 dehydration 48 respiratory infection 48 kidney disease 48 respiratory illness 48 complications 48 kidney stones 47 preeclampsia 47 congenital heart 47 colitis 47 septic shock 47 bronchitis 47 pre eclampsia 47 overdose 47 pacemaker 47 aneurysm 47 blocked arteries 47 deep vein thrombosis 46 viral infection 46 ailments 46 appendicitis 46 illness 46 stroke 46 drug overdose 46 bypass surgery 46 clogged arteries 45 thyroid 45 brain hemorrhage 45 heart 45 hypertension 45 lung cancer 45 asthma 45 hypothyroidism 45 abnormality 45 liver disease 45 obstructive sleep apnea 45 tendonitis 45 urinary tract infection 45 heatstroke 44 ischemic stroke 44 hypoglycemia 44 blood sugar 44 clot 44 colon cancer 44 cardiovascular disease 44 allergic reaction 44 potentially fatal 44 respiratory 44 respiratory ailments 43 coronary artery 43 neurological disorder 43 dizziness 43 brain tumor 43 leukemia 43 lung 43 asphyxia 43 diabetes 43 Lou Gehrig disease 43 esophageal cancer 43 clots 43 lung diseases 43 undiagnosed 43 birth defect 43 ear infection 43 organ failure 42 electrocardiogram 42 Parkinson disease