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.
As with all medical conditions, there may be many causal factors. 1  Further relevant information on causes of Heart block may be found in: 2  Risk factors for Heart block. 3  Medications that may cause Heart block. 4  Contagiousness for Heart block. 5  Genetics of Heart block. 6  Hidden causes of Heart block.