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.
Little protection against the deadly VX nerve agent. Credit: Shutterstock/Bubbers BB. The substance that could be responsible for the death Kim Jong-nam, the half-brother of the North Korean leader Kim Jong-un, was the VX nerve agent, according to preliminary reports from Malaysian police.