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22 - Bradyarrhythmias

from Section 4 - Cardiovascular emergencies

Published online by Cambridge University Press:  05 November 2013

By
Chad Van Ginkel
Edited by
Kaushal Shah ,
Jarone Lee ,
Kamal Medlej  and
Scott D. Weingart
Kaushal Shah
Affiliation:
Department of Emergency Medicine, Mount Sinai School of Medicine, New York
Jarone Lee
Affiliation:
Department of Emergency Medicine, Massachusetts General Hospital, Boston
Kamal Medlej
Affiliation:
American University of Beirut
Scott D. Weingart
Affiliation:
Department of Emergency Medicine, Mount Sinai School of Medicine, New York
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Summary

This chapter discusses the diagnosis, evaluation and management of bradyarrhythmias. Sinus bradycardia occurs in 15-20% of patients with acute myocardial infarction secondary to ischemia of the sinoatrial (SA) node. Syncope may result from primary dysrhythmia or from reduced cardiac output. A 12-lead electrocardiogram (ECG) is essential for the diagnosis of bradycardia and to differentiate between the different types of bradyarrhythmias. History should focus particularly on symptoms of ischemic heart disease, and on medications such as nodal blockers. As the bradycardia worsens, cardiac output decreases as well. This results in hypotension and hypoperfusion that need to be corrected using medications or a pacemaker. In addition, a decrease in cardiac output can result in pulmonary edema. Even with the development of pulmonary edema, the bradycardia is the first thing that needs to be addressed. Treatment of the cardiogenic pulmonary edema can be instituted afterward.

Keywords

solid organ abdominal traumapenetrating traumalaparotomyblunt traumahemodynamic stabilityhemorrhagic shock
Type
Chapter
Information
Practical Emergency Resuscitation and Critical Care , pp. 153 - 157
Publisher: Cambridge University Press
Print publication year: 2013

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