Mayo Clin Proc 1989;64:617C628. seronegative putative autoimmune autonomic ganglionopathy. Plasma exchange or combined therapy with immunosuppressive agents should be considered in patients who do not benefit from IV immunoglobulin alone. GLOSSARY AAG = autoimmune autonomic ganglionopathy; AB = … Continue reading Mayo Clin Proc 1989;64:617C628