WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to palpitations (fluttering in chest). Click on the combination that matches your symptoms to find the conditions that may cause these problems.
Nerve agents are a class of phosphorus-containing organic chemicals (organophosphates) that disrupt the mechanism by which nerves transfer messages to organs. The disruption is caused by blocking acetylcholinesterase, an enzyme that normally destroys acetylcholine, a neurotransmitter.
VX is one of the most pernicious and virulent of all chemical warfare agents. It was first synthesized in the early 1950s and later stockpiled by all Allied nations. It is highly toxic with 10 milligrams being lethal to humans. Chemical Properties