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.
It sometimes causes dizziness and/or other symptoms. People with normal conduction systems may sometimes have type 1 second degree heart block when they sleep. Second-degree heart block (Type II) â With this condition, some of the electrical impulses are unable to reach the ventricles. This condition is less common than Type I, and is more serious. Usually, your doctor will recommend a pacemaker to treat type II second degree heart block, as it frequently progresses to third degree heart block.