sick sinus syndrome
secondary hypertension
right ventricular hypertrophy
right bundle branch block
rheumatic mitral stenosis
rheumatic mitral regurgitation
rheumatic heart disease
rheumatic fever
rheumatic diseases of pulmonary valve
rheumatic aortic stenosis
rheumatic aortic regurgitation
renovascular hypertension
refractory angina
pulmonary valve stenosis
pulmonary valve insufficiency
pulmonary valve disorders
pulmonary edema
pulmonary artery stenosis
pulmonary arterial hypertension
prinzmetals angina
preventative cardiology
premature ventricular contractions
premature beats
postural tachycardia syndrome
pericarditis