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28 - Clinical Aspects of Large-Scale Chemical Events

from SECTION A - CBRNE AND HAZMAT

Published online by Cambridge University Press:  05 August 2011

By
John S. Urbanetti  and
Jonathan Newmark
Edited by
Kristi L. Koenig  and
Carl H. Schultz
Kristi L. Koenig
Affiliation:
University of California, Irvine
Carl H. Schultz
Affiliation:
University of California, Irvine
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Summary

INTRODUCTION

Since the dawn of civilization, chemical materials have been a part of human life. Today nearly 100,000 different commercial chemicals are known. Several thousand new chemicals are developed yearly. Of these new chemicals, nearly a thousand reach the commercial market. Annual worldwide chemical production is estimated at 400 million tons. Of this production, most is bulk stored and bulk transported. Hence there is a risk of large-scale release with resulting environmental and health effects. Human toxicity from chemical exposure has been well recorded since the beginning of the industrial age. Recognition and investigation of those effects have allowed the development of therapeutic interventions. Toxic effects of chemicals may result from exposures to small amounts such as present in foods or medications, or larger amounts resulting from accidental or intentional releases from storage or transportation facilities. The human toxic effects of smaller chemical exposure events have generally been well managed because there are rarely more than one or two patients requiring care at a time. Large-scale exposures vastly complicate the medical response to a toxic chemical event, principally because of overwhelming logistical difficulties. This chapter explores various clinical aspects of large-scale exposures to chemical agents. Several examples of both intentional (e.g., warfare or terrorist) and accidental events will be presented. Accompanying commentary will support the following central principles.

PRINCIPLES OF CHEMICAL EVENTS

  1. 1) The degree and speed of symptom onset results primarily from the amount of chemical incorporated (“dose response”) and secondarily, from the speed of chemical incorporation.

  2. 2) Much of the clinical information about toxic (warfare) chemical effects has been collected from studies of young, healthy military men. Extrapolation of those data to other subsets of the population (old, female, and persons with complicating medical illness, or concomitant use of medications) can be very difficult.

  3. […]

Keywords

acute respiratory failureCSEPPcyanideslarge-scale chemical eventsnerve agentsdisaster preparednessFederal Emergency Management Agencypulmonary intoxicantsvesicants
Type
Chapter
Information
Koenig and Schultz's Disaster Medicine
Comprehensive Principles and Practices
 , pp. 430 - 453
Publisher: Cambridge University Press
Print publication year: 2009

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