Bradycardia can be caused by: 1  Changes in the heart that are the result of aging.  Diseases that damage the heart's electrical system. These include coronary artery disease, heart attack, and infections such as endocarditis and myocarditis.
Portland Weather In May. The highest recorded temperature in May for Portland for the past 70 years was 100 degrees Fahrenheit, most recently measured on May 28, 1983, and the normal high is 67.
The North Oregon Coast has periodic wind storms from the months of October to March. The storms we get here mostly have strong south winds and heavy rain. High wind warnings are issued by the National Weather Service prior to these wind storms with very good accuracy.