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.
Aging and VX nerve agent. For all nerve agents, including the V-series agents, inactivation of AChE eventually becomes permanent (irreversible). This phenomenon of irreversible inactivation of AChE is known as aging. Aging represents the formation of a covalent bond between the nerve agent and the AChE.