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.
Outlook. The symptoms and severity of heart block depend on which type you have. First-degree heart block may not cause any severe symptoms. Second-degree heart block may result in the heart skipping a beat or beats. This type of heart block also can make you feel dizzy or faint.