Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Potassium excess: Too much potassium in the blood, usually because of kidney impairment. This state is termed hyperkalemia. For further information, see: Hyperkalemia and Potassium balance.