The cause of SCD in WPW syndrome is rapid conduction of AF to the ventricles via the AP, resulting in ventricular fibrillation (VF). AF develops in one fifth to one third of patients with WPW syndrome; the reasons for this and the effects of AP ablation on its development are unclear.
Barbara Mertz (September 29, 1927 â August 8, 2013) was an American author who wrote under her own name as well as under the pseudonyms Elizabeth Peters and Barbara Michaels.
Gretchen Schwartz is Walter White's old college chemistry assistant and now co-owner of Gray Matter Technologies, a successful pharmaceutical company. A former romantic interest of Walt's, she is currently married to Elliott Schwartz, with whom she also manages Gray Matter. Gretchen was introduced via a flashback.