Ross MacKenzie, MD. A short PR interval may be associated with an otherwise normal. electrocardiogram or a myriad of bizarre electrocardiographic ab-. normalities. Clinically, the individual may be asymptomatic or ex-. perience a variety of complex arrhythmias, which may be disabling. and rarely cause sudden death.
Pain, numbness and tingling of the left arm may signal a cardiac emergency. Photo Credit: Comstock Images/Stockbyte/Getty Images The person walking into an emergency room with symptoms of pain, numbness and tingling in the left arm should be prepared for a series of tests to rule out a heart problem. This is not because a heart problem is the most common cause of these symptoms, but because it is the most serious of the possible causes, and the one that demands immediate medical treatment.
Although some of the causes of arm tingling are not life threatening, the symptom could also indicate something serious like a Stroke or a Heart Attack. When arm tingling happens in the left arm, it may be a cause for immediate medical attention. If arm tingling comes with these symptoms, seek medical help immediately. 1  Coldness with profuse perspiration.  Weakness, overall or just of the affected arm with partial or complete loss of sensation in the arm.