Required Documents for a CDL. You will need to take the originals of all these required documents: Out-of-state CDL or New Mexico driver license. Proof of Identification number. Commercial Driver Medical Certificate and/or any medical waiver issued; Proof of identity (including date of birth),
Heart block typically causes lightheadedness, fainting, and palpitations. Depending on the severity of the heart block, this can be dangerous. For example, a third-degree heart block can worsen pre-existing conditions, such as heart failure. It can cause loss of consciousness and even sudden cardiac arrest. There can also be chest pain.
Types of Heart Block. First-degree heart block â The electrical impulses are slowed as they pass through the conduction system, but they all successfully reach the ventricles. First-degree heart block rarely causes symptoms or problems. Well-trained athletes may have first-degree heart block. Some medications can also cause this condition.