CAD (coronary artery disease) is a subset of a process disease called atherosclerosis, plaques of mainly fat build up inside arteries leading to intraluminal stenosis..
I post this one to draw attention to all of us, afibers, not trying to scare any of us. The purpose of this post is to do the right things to prevent the disease as long as we can. Prevention is the key because once we got it, the disease is progressive as Afib itself.
Atherosclerosis can affect the carotid, the aorta (aneurysm and aorta dissection), arteries of the legs (PAD, peripheral artery disease) and coronary arteries of the heart. Plaques can get dislodged from the carotid and go to the brain causing strokes. Plaques can dislodge from the coronary arteries and causing MI, heart attack. After the heart attack, the EF goes down significantly and if you add to it, Afib episodes, patient would go to heart failure pretty quick.
Patients with CAD usually will get stents or bypass surgery and after it, they need to be put under antiplatelet therapy such as aspirin and/or plavix (clopidogrel) in addition to DOAC. This dual or triple therapy increases considerably the risks of bleedings among other risks.
With CAD, arteries are blocked to some extent degrees (totally blocked, mildly, moderately or severely blocked) and the heart already lacks oxygen to function properly and if you add afib episodes to it, the lack of oxygen might cause other arrythmias especially VT.
The two diseases promote the occurrence and progression of each other, forming a vicious cycle. In this regard, CAD can be both a cause and a consequence of AF.
To prevent or control CAD, here are the main risk factors: high blood pressure, diabetes, dyslipidemias, overweight/obesity, sleep apnea, smoking, age, and decreased physical activity. Mainly bad diet, salty food, processed food, and lack of exercise. Easy said than done. Please do not forget both diseases are progressive ones.