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.
Chemical Agents. Chemical agents are toxic substances that cause incapacitation or death upon exposure. There are four general types of traditional chemical agentschoking, blood, blister and nervethat vary in their toxicity, mode of action and effect.