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==Overview==
==Overview==
Bronchiolitis occurs mainly in [[infants]]. The patient usually gives a history of [[nasal congestion]] and expectoration of [[phlegm]]. The classical presentation of bronchiolitis is [[fever]], [[cough]], and [[dyspnea]]. The [[virus]] is transmitted from person to person by direct contact with [[nasal]] [[fluids]] or via [[Airborne transmission|airborne droplets]]. Although [[Human respiratory syncytial virus|RSV]] generally causes only mild [[symptoms]] in [[Adult|adults]], it can cause severe [[illness]] in an [[infant]]. [[Bronchiolitis]] is seasonal and appears more often in the fall and winter months. Bronchiolitis is a very common reason for infants to be hospitalized during winter and early spring. It has been estimated that by 1 year of age, more than half of all [[infants]] have been exposed to [[RSV]].
Common symptoms of bronchiolitis include [[fever]], [[cough]], [[dyspnea]], and [[Nasal discharge]]. Other symptoms include post tussive [[vomiting]] and [[dehydration]].


==History and Symptoms==
==History and Symptoms==
*Bronchiolitis should be suspected when acute onset of [[upper respiratory tract infection]] is followed by [[lower respiratory tract infection]] [[symptoms]] ([[wheezing]], [[cough]], and [[shortness of breath]]), in a child younger than 2 years.<ref name="Mandell">{{Cite book  | last1 = Mandell | first1 = Gerald L. | last2 = Bennett | first2 = John E. (John Eugene) | last3 = Dolin | first3 = Raphael. | title = Mandell, Douglas, and Bennett's principles and practice of infectious disease | date = 2010 | publisher = Churchill Livingstone/Elsevier | location = Philadelphia, PA | isbn = | pages = }}</ref><ref name="pmid27549684">{{cite journal| author=Florin TA, Plint AC, Zorc JJ| title=Viral bronchiolitis. | journal=Lancet | year= 2017 | volume= 389 | issue= 10065 | pages= 211-224 | pmid=27549684 | doi=10.1016/S0140-6736(16)30951-5 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=27549684  }} </ref>
 
*The [[incubation period]] of [[Human respiratory syncytial virus|respiratory syncytial virus (RSV)]] is 2-8 days; therefore [[symptoms]] begin within one week of contact with a [[symptomatic]] patient.<ref name="pmid19209271">{{cite journal| author=Wright M, Mullett CJ, Piedimonte G| title=Pharmacological management of acute bronchiolitis. | journal=Ther Clin Risk Manag | year= 2008 | volume= 4 | issue= 5 | pages= 895-903 | pmid=19209271 | doi= | pmc=PMC2621418 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19209271  }} </ref>  
=== Common symptoms ===
*Patients usually present with [[symptoms]] of a mild [[upper respiratory infection]] which include [[fever]], [[cough]], and [[nasal discharge]].<ref name="pmid19209271">{{cite journal| author=Wright M, Mullett CJ, Piedimonte G| title=Pharmacological management of acute bronchiolitis. | journal=Ther Clin Risk Manag | year= 2008 | volume= 4 | issue= 5 | pages= 895-903 | pmid=19209271 | doi= | pmc=PMC2621418 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19209271  }} </ref>
Common symptoms of bronchiolitis include the following: <ref name="Mandell">{{Cite book  | last1 = Mandell | first1 = Gerald L. | last2 = Bennett | first2 = John E. (John Eugene) | last3 = Dolin | first3 = Raphael. | title = Mandell, Douglas, and Bennett's principles and practice of infectious disease | date = 2010 | publisher = Churchill Livingstone/Elsevier | location = Philadelphia, PA | isbn = | pages = }}</ref><ref name="pmid27549684">{{cite journal| author=Florin TA, Plint AC, Zorc JJ| title=Viral bronchiolitis. | journal=Lancet | year= 2017 | volume= 389 | issue= 10065 | pages= 211-224 | pmid=27549684 | doi=10.1016/S0140-6736(16)30951-5 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=27549684  }} </ref><ref name="pmid19209271">{{cite journal| author=Wright M, Mullett CJ, Piedimonte G| title=Pharmacological management of acute bronchiolitis. | journal=Ther Clin Risk Manag | year= 2008 | volume= 4 | issue= 5 | pages= 895-903 | pmid=19209271 | doi= | pmc=PMC2621418 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19209271  }} </ref>
*[[Symptoms]] of [[lower respiratory tract infection]] include:<ref name="Mandell">{{Cite book  | last1 = Mandell | first1 = Gerald L. | last2 = Bennett | first2 = John E. (John Eugene) | last3 = Dolin | first3 = Raphael. | title = Mandell, Douglas, and Bennett's principles and practice of infectious disease | date = 2010 | publisher = Churchill Livingstone/Elsevier | location = Philadelphia, PA | isbn = | pages = }}</ref>
* [[cough]]
:*Dry [[cough]]
*[[Wheezing]]
:*[[Wheezing]]
*[[Shortness of breath]]
:*[[Shortness of breath]]
*[[Fever]]
:*[[Fever]]
*[[Tachypnea]]
:*[[Tachypnea]]
 
*[[Fever]] is usually not high; in the case of high [[fever]], other causes should be ruled out, such as [[bacterial infections]].
*[[Lethargy]]
*[[Apnea]] is a severe manifestation of [[RSV]] [[infection]] and is more common in children under 3 months of age and [[premature]] infants.<ref name="pmid19209271">{{cite journal| author=Wright M, Mullett CJ, Piedimonte G| title=Pharmacological management of acute bronchiolitis. | journal=Ther Clin Risk Manag | year= 2008 | volume= 4 | issue= 5 | pages= 895-903 | pmid=19209271 | doi= | pmc=PMC2621418 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19209271  }} </ref> 
*[[Nasal discharge]]  
*[[Lethargy]] is also common.
 
*Post-tussive vomiting may be seen.
=== Less common sympotms ===
*Poor feeding secondary to [[tachypnea]] may lead to [[dehydration]].<ref name="Mandell">{{Cite book  | last1 = Mandell | first1 = Gerald L. | last2 = Bennett | first2 = John E. (John Eugene) | last3 = Dolin | first3 = Raphael. | title = Mandell, Douglas, and Bennett's principles and practice of infectious disease | date = 2010 | publisher = Churchill Livingstone/Elsevier | location = Philadelphia, PA | isbn = | pages = }}</ref>
Less common symptoms of bronchiolitis include the following:<ref name="Mandell">{{Cite book  | last1 = Mandell | first1 = Gerald L. | last2 = Bennett | first2 = John E. (John Eugene) | last3 = Dolin | first3 = Raphael. | title = Mandell, Douglas, and Bennett's principles and practice of infectious disease | date = 2010 | publisher = Churchill Livingstone/Elsevier | location = Philadelphia, PA | isbn = | pages = }}</ref><ref name="pmid16860701">{{cite journal| author=Smyth RL, Openshaw PJ| title=Bronchiolitis. | journal=Lancet | year= 2006 | volume= 368 | issue= 9532 | pages= 312-22 | pmid=16860701 | doi=10.1016/S0140-6736(06)69077-6 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16860701  }} </ref>
*History of [[cyanosis]] is related to severe disease.<ref name="pmid16860701">{{cite journal| author=Smyth RL, Openshaw PJ| title=Bronchiolitis. | journal=Lancet | year= 2006 | volume= 368 | issue= 9532 | pages= 312-22 | pmid=16860701 | doi=10.1016/S0140-6736(06)69077-6 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16860701  }} </ref>
*Post-tussive [[vomiting]]
*[[dehydration]]


==References==
==References==
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{{Reflist|2}}
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Latest revision as of 20:43, 29 July 2020

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

Overview

Common symptoms of bronchiolitis include fever, cough, dyspnea, and Nasal discharge. Other symptoms include post tussive vomiting and dehydration.

History and Symptoms

Common symptoms

Common symptoms of bronchiolitis include the following: [1][2][3]

Less common sympotms

Less common symptoms of bronchiolitis include the following:[1][4]

References

  1. ↑ 1.0 1.1 Mandell, Gerald L.; Bennett, John E. (John Eugene); Dolin, Raphael. (2010). Mandell, Douglas, and Bennett's principles and practice of infectious disease. Philadelphia, PA: Churchill Livingstone/Elsevier.
  2. ↑ Florin TA, Plint AC, Zorc JJ (2017). "Viral bronchiolitis". Lancet. 389 (10065): 211–224. doi:10.1016/S0140-6736(16)30951-5. PMID 27549684.
  3. ↑ Wright M, Mullett CJ, Piedimonte G (2008). "Pharmacological management of acute bronchiolitis". Ther Clin Risk Manag. 4 (5): 895–903. PMC 2621418. PMID 19209271.
  4. ↑ Smyth RL, Openshaw PJ (2006). "Bronchiolitis". Lancet. 368 (9532): 312–22. doi:10.1016/S0140-6736(06)69077-6. PMID 16860701.

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