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.
V-series nerve agents were researched by the British in the 1950s and are similar to G-series nerve agents. However, they are more advanced than G-series agents and are generally more toxic and less volatile. They also pose a greater skin penetration hazard. An example of a V-agent is VX.