This week Consumer Reports released news that arsenic was found in brown rice, white rice, rice breakfast cereals, organic rice baby cereal, and other rice productsââmany at worrisome levelsââin tests they performed.
First-degree heart block. First-degree AV block is defined as a PR interval longer than 0.2 seconds. Each atrial activation leads to a ventricular activation with a 1:1 correspondence.
Quick Answer. Symptoms of heart blockage include  fainting, light-headedness, fatigue and chest pain, according to the National Heart, Lung, and Blood Institute. First-degree heart block may not cause symptoms and is common in highly trained athletes.