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==Overview==
==Overview==
ECG in asthmatics with acute severe exacerbation may reveal [[sinus tachycardia]] and a right heart strain pattern. However, the administration of a [[Bronchodilator#Short-acting β2-agonists|β2-agonist]] may relieve symptoms and hence result in a paradoxical decrease in heart rate. The presence of [[supraventricular tachycardia]] should raise a suspicion of [[Bronchodilator#Theophylline|theophylline]] toxicity.
ECG in asthmatics with acute severe exacerbation may reveal [[sinus tachycardia]] and a right heart strain pattern. However, the administration of a [[Bronchodilator#Short-acting β2-agonists|β2-agonist]] may relieve symptoms and hence result in a paradoxical decrease in heart rate. The presence of [[supraventricular tachycardia]] should raise a suspicion of [[Bronchodilator#Theophylline|theophylline]] toxicity.<ref name="pmid28144025">{{cite journal| author=Arshad H, Khan RR, Khaja M| title=Case Report of S1Q3T3 Electrocardiographic Abnormality in a Pregnant Asthmatic Patient During Acute Bronchospasm. | journal=Am J Case Rep | year= 2017 | volume= 18 | issue=  | pages= 110-113 | pmid=28144025 | doi= | pmc=5297401 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=28144025  }} </ref>
 
==Electrocardiogram==
ECG in asthmatics with acute severe exacerbation may reveal [[sinus tachycardia]] and a right heart strain pattern. However, the administration of a [[Bronchodilator#Short-acting β2-agonists|β2-agonist]] may relieve symptoms and hence result in a paradoxical decrease in heart rate. The presence of [[supraventricular tachycardia]] should raise a suspicion of [[Bronchodilator#Theophylline|theophylline]] toxicity.<ref name="pmid28144025">{{cite journal| author=Arshad H, Khan RR, Khaja M| title=Case Report of S1Q3T3 Electrocardiographic Abnormality in a Pregnant Asthmatic Patient During Acute Bronchospasm. | journal=Am J Case Rep | year= 2017 | volume= 18 | issue=  | pages= 110-113 | pmid=28144025 | doi= | pmc=5297401 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=28144025  }} </ref>
*Abnormalities in S1Q3T3 may be seen in bronchospasm.


==References==
==References==
{{reflist|2}}
{{reflist|2}}
{{WH}}
{{WS}}


[[Category:Pulmonology]]
[[Category:Pulmonology]]
[[Category:Immunology]]
[[Category:Emergency medicine]]
[[Category:Emergency medicine]]
[[Category:Intensive care medicine]]  
[[Category:Mature chapter]]
 
[[Category:Electrophysiology]]
 
{{WH}}
{{WS}}

Latest revision as of 20:30, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Lakshmi Gopalakrishnan, M.B.B.S. [2]

Overview

ECG in asthmatics with acute severe exacerbation may reveal sinus tachycardia and a right heart strain pattern. However, the administration of a β2-agonist may relieve symptoms and hence result in a paradoxical decrease in heart rate. The presence of supraventricular tachycardia should raise a suspicion of theophylline toxicity.[1]

Electrocardiogram

ECG in asthmatics with acute severe exacerbation may reveal sinus tachycardia and a right heart strain pattern. However, the administration of a β2-agonist may relieve symptoms and hence result in a paradoxical decrease in heart rate. The presence of supraventricular tachycardia should raise a suspicion of theophylline toxicity.[1]

  • Abnormalities in S1Q3T3 may be seen in bronchospasm.

References

  1. 1.0 1.1 Arshad H, Khan RR, Khaja M (2017). "Case Report of S1Q3T3 Electrocardiographic Abnormality in a Pregnant Asthmatic Patient During Acute Bronchospasm". Am J Case Rep. 18: 110–113. PMC 5297401. PMID 28144025.

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