Related by context. Frequent words. (Click for all words.) 68 chronic respiratory 67 chronic obstructive pulmonary 63 lung disease 60 lung diseases 60 asthma 60 respiratory 58 chronic bronchitis 58 emphysema 57 bronchiolitis 57 lung 56 pulmonary disease 55 COPD 53 congenital heart 53 pneumonia 53 asthmatic 52 chronic illness 52 breathing difficulties 52 chronic cough 52 cystic fibrosis 52 Chronic Obstructive Pulmonary Disease 52 born prematurely 51 respiratory diseases 51 chronic illnesses 51 respiratory distress 51 respiratory illnesses 51 lung function 51 chronic 51 respiratory symptoms 50 pulmonary diseases 50 lung infections 50 pulmonary hypertension 50 respiratory ailments 50 bronchitis 50 sickle cell anemia 50 rheumatoid arthritis 50 developmental delays 49 acute respiratory 49 compromised immune 49 respiratory illness 49 kidney disease 49 chronic kidney 49 Cystic fibrosis 49 pre eclampsia 49 lungs 49 diabetes cardiovascular disease 48 cystic fibrosis CF 48 suppressed immune 48 septic shock 48 respiratory infections 48 sinusitis 48 pulmonary edema 47 respiratory tract infection 47 viral pneumonia 47 ARDS 47 coronary heart 47 cerebral palsy 47 Asthma 47 idiopathic pulmonary fibrosis 47 weakened immune 47 weakened immune systems 47 dilated cardiomyopathy 47 respiratory infection 47 heart disease 47 allergic asthma 47 congenital defects 47 asthmatics 47 renal failure 46 cardiomyopathy 46 hypertension 46 rheumatic fever 46 spina bifida 46 respiratory tract 46 kidney failure 46 persistent cough 46 stuffy nose 46 Downs Syndrome 46 pulmonary 46 myocarditis 46 bacterial pneumonia 46 liver disease 46 neurological 46 low birthweight 46 preterm infants 46 disease COPD 46 hemolytic uremic syndrome 46 pulmonary fibrosis 46 premature babies 45 runny nose 45 induced asthma 45 difficulty breathing 45 croup 45 sickle cell disease 45 iron overload 45 renal disease 45 obstructive sleep apnea 45 modifiable risk 45 arteriosclerosis 45 bone thinning 45 congestive heart failure 44 upper respiratory 44 hydrocephalus