Croup medical therapy: Difference between revisions

Jump to navigation Jump to search
No edit summary
Line 11: Line 11:


Moderate to severe croup may require [[nebulizer|nebulized]] [[adrenaline]] in addition to steroids. [[Oxygen]] may be needed if [[Hypoxia (medical)|hypoxia]] develops.  Children with moderate or severe croup are typically hospitalized for observation, usually for less than a day. [[Intubation]] is rarely needed (less than 1% of hospitalized patients).
Moderate to severe croup may require [[nebulizer|nebulized]] [[adrenaline]] in addition to steroids. [[Oxygen]] may be needed if [[Hypoxia (medical)|hypoxia]] develops.  Children with moderate or severe croup are typically hospitalized for observation, usually for less than a day. [[Intubation]] is rarely needed (less than 1% of hospitalized patients).
==Medical Therapy Based on the Drug <SMALL><SMALL><SMALL><SMALL><SMALL>Adapted from Lancet. 2008;371(9609):329–339. <ref name="BjornsonJohnson2008">{{cite journal|last1=Bjornson|first1=Candice L|last2=Johnson|first2=David W|title=Croup|journal=The Lancet|volume=371|issue=9609|year=2008|pages=329–339|issn=01406736|doi=10.1016/S0140-6736(08)60170-1}}</ref></SMALL></SMALL></SMALL></SMALL></SMALL>==
<SMALL><font color="#FF4C4C">'''▸ Click on the following categories to expand treatment regimens.'''</font></SMALL>
{|
| valign=top |
<div style="border-radius: 5px 5px 0 0; border: solid 1px #20538D; border-bottom: 0px; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #A1BCDD; text-align: center;">
<font color="#FFF">
'''Croup Medical Therapy'''
</font>
</div>
<div class="mw-customtoggle-table01" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Glucocorticoids'''
</font>
</div>
<div class="mw-customtoggle-table02" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Epinephrine'''
</font>
</div>
<div class="mw-customtoggle-table03" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Oxygen'''
</font>
</div>
<div class="mw-customtoggle-table04" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Mist Therapy'''
</font>
</div>
<div class="mw-customtoggle-table05" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Antibiotics'''
</font>
</div>
<div class="mw-customtoggle-table06" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Heliox'''
</font>
</div>
| valign=top |
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table01" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Glucocorticoids}}
|-
| style="padding: 0 5px; font-size: 90%; background: #F5F5F5; font-weight: bold; font-style: italic;" align=center | Mild to Moderate Croup
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''[[Dexamethasone]] 0.60 mg/kg PO/IM/IV, single dose  (max. 10 mg)''''' <br> OR <br> ▸ '''''[[Budesonide]] 2mg nebulized'''''
|-
| style="padding: 0 5px; font-size: 90%; background: #F5F5F5; font-weight: bold; font-style: italic;" align=center | Severe Croup
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''[[Dexamethasone]] 0.60 mg/kg IM/IV, single dose''''' <br> OR <br> ▸ '''''[[Budesonide]] 2mg nebulized'''''
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table02" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Epinephrine}}
|-
| style="padding: 0 5px; font-size: 90%; background: #F5F5F5; font-weight: bold; font-style: italic;" align=center | Mild Croup
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | There are no indications of nebulized epinephrine for Mild Croup
|-
| style="padding: 0 5px; font-size: 90%; background: #F5F5F5; font-weight: bold; font-style: italic;" align=center | Moderate to Severe Croup
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''[[Nebulized racemic epinephrine (2.25%)]] 0.05 mL/kg (max. 0.5mL) in 3mL of normal saline for 15 min''''' <br> OR <br>  ▸ '''''[[Nebulized L-epinephrine]] 0.5mL/kg (max 5mL) for 15 min'''''  <br>                ''Repeat as needed''
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table03" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Oxygen}}
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ Humidified oxygen should be given to patients with hypoxia or severe respiratory distress
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table04" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Mist Therapy}}
|-
| style="padding: 0 5px; font-size: 90%; background: #F5F5F5; font-weight: bold; font-style: italic;" align=center |
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table05" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Antibiotics}}
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''Antibiotic are not indicated to treat viral croup''''' <br> ▸ '''''Antibiotics are use for complications, such as bacterial tracheitis or epiglottitis'''''
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table06" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Heliox}}
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ There is no sufficient data that recommends the general use of heliox in patients with croup.<ref name="WeberChudnofsky2001">{{cite journal|last1=Weber|first1=J. E.|last2=Chudnofsky|first2=C. R.|last3=Younger|first3=J. G.|last4=Larkin|first4=G. L.|last5=Boczar|first5=M.|last6=Wilkerson|first6=M. D.|last7=Zuriekat|first7=G. Y.|last8=Nolan|first8=B.|last9=Eicke|first9=D. M.|title=A Randomized Comparison of Helium-Oxygen Mixture (Heliox) and Racemic Epinephrine for the Treatment of Moderate to Severe Croup|journal=PEDIATRICS|volume=107|issue=6|year=2001|pages=e96–e96|issn=0031-4005|doi=10.1542/peds.107.6.e96}}</ref><ref name="BeckmannBrueggemann2000">{{cite journal|last1=Beckmann|first1=Kathleen R.|last2=Brueggemann|first2=William Martin|title=HELIOX TREATMENT OF SEVERE CROUP|journal=The American Journal of Emergency Medicine|volume=18|issue=6|year=2000|pages=735–736|issn=07356757|doi=10.1016/S0735-6757(00)90309-7}}</ref><ref name="GuptaCheifetz2005">{{cite journal|last1=Gupta|first1=Vineet K.|last2=Cheifetz|first2=Ira M.|title=Heliox administration in the pediatric intensive care unit: An evidence-based review|journal=Pediatric Critical Care Medicine|volume=6|issue=2|year=2005|pages=204–211|issn=1529-7535|doi=10.1097/01.PCC.0000154946.62733.94}}</ref>
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ Some studies have shown a short-term benefit of heliox inhalation in children with moderate to severe croup.<ref>{{Cite journal
| author = [[Irene Moraa]], [[Nancy Sturman]], [[Treasure McGuire]] & [[Mieke L. van Driel]]
| title = Heliox for croup in children
| journal = [[The Cochrane database of systematic reviews]]
| volume = 12
| pages = CD006822
| year = 2013
| month =
| doi = 10.1002/14651858.CD006822.pub4
| pmid = 24318607
}}</ref><ref>{{Cite journal | author = [[Sarah Kline-Krammes]], [[Christina Reed]], [[John S. Jr Giuliano]], [[Hamilton P. Schwartz]], [[Michael Forbes]], [[John Pope]], [[James Besunder]], [[Michael D. Gothard]], [[Kerry Russell]] & [[Michael T. Bigham]] | title = Heliox in children with croup: a strategy to hasten improvement | journal = [[Air medical journal]] | volume = 31 | issue = 3 | pages = 131–137 | year = 2012 | month = May-June | doi = 10.1016/j.amj.2011.08.004 | pmid = 22541348 }}</ref>
|-
|}
|}
|}
==Medical Therapy Based on the Severity <SMALL><SMALL><SMALL><SMALL><SMALL>Adapted from Pediatric Pulmonology 49:421–429 (2014) <ref name="PetrocheilouTanou2014">{{cite journal|last1=Petrocheilou|first1=Argyri|last2=Tanou|first2=Kalliopi|last3=Kalampouka|first3=Efthimia|last4=Malakasioti|first4=Georgia|last5=Giannios|first5=Christos|last6=Kaditis|first6=Athanasios G.|title=Viral croup: Diagnosis and a treatment algorithm|journal=Pediatric Pulmonology|volume=49|issue=5|year=2014|pages=421–429|issn=87556863|doi=10.1002/ppul.22993}}</ref> </SMALL></SMALL></SMALL></SMALL></SMALL>==
<SMALL><font color="#FF4C4C">'''▸ Click on the following categories to expand treatment regimens.'''</font></SMALL>
{|
| valign=top |
<div style="border-radius: 5px 5px 0 0; border: solid 1px #20538D; border-bottom: 0px; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #A1BCDD; text-align: center;">
<font color="#FFF">
'''Croup Medical Therapy'''
</font>
</div>
<div class="mw-customtoggle-table07" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Mild'''
</font>
</div>
<div class="mw-customtoggle-table08" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Moderate'''
</font>
</div>
<div class="mw-customtoggle-table09" style="cursor: pointer; border-radius: 0 0 0 0; border: solid 1px #20538D; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 1px 1px rgba(0, 0, 0, 0.5); height: 30px; line-height: 30px; width: 225px; background: #4479BA;">
<font color="#FFF">
&nbsp;&nbsp;▸&nbsp;&nbsp;'''Severe'''
</font>
</div>
| valign=top |
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table07" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Mild}}
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''[[Dexamethasone]] 0.60 mg/kg PO single dose  (max. 10 mg)''''' <br> OR <br> ▸ '''''[[Budesonide]] 2mg nebulized'''''
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table08" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Moderate}}
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''Nebulized racemic [[epinephrine]] (2.25%) 0.05 mL/kg (max. 0.5mL) in 3mL of normal saline for 15 min''''' <br> OR <br>  ▸ '''''Nebulized L-[[epinephrine]] 0.5mL/kg (max 5mL) for 15 min'''''  <br>                ''Repeat as needed''
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | PLUS
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''[[Dexamethasone]] 0.60 mg/kg PO/IM single dose  (max. 10 mg)''''' <br> OR <br> ▸ '''''[[Budesonide]] 2mg nebulized'''''
|-
|}
|}
{| class="mw-collapsible mw-collapsed" id="mw-customcollapsible-table09" style="background: #FFFFFF;"
| valign=top |
{| style="float: left; cellpadding=0; cellspacing= 0; width: 400px;"
! style="height: 30px; line-height: 30px; background: #4479BA; border: 0px; font-size: 100%; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);" align=center | {{fontcolor|#FFF|Severe}}
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''Nebulized racemic [[epinephrine]] (2.25%) 0.05 mL/kg (max. 0.5mL) in 3mL of normal saline for 15 min''''' <br> OR <br>  ▸ '''''Nebulized L-[[epinephrine]] 0.5mL/kg (max 5mL) for 15 min'''''  <br>                ''Repeat as needed''
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | PLUS
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ '''''[[Dexamethasone]] 0.60 mg/kg IM/IV single dose  (max. 10 mg)'''''
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | AND
|-
| style="font-size: 90%; padding: 0 5px; background: #DCDCDC" align=left | ▸ Hospital admission
|-
|}
|}
|}


==References==
==References==

Revision as of 14:03, 22 May 2014

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Croup Microchapters

Home

Patient Information

Overview

Historical Perspective

Pathophysiology

Causes

Classification

Differentiating Croup from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

X Ray

Other Diagnostic Studies

Treatment

Medical Therapy

Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Croup medical therapy On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Croup medical therapy

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Croup medical therapy

CDC on Croup medical therapy

Croup medical therapy in the news

Blogs on Croup medical therapy

Directions to Hospitals Treating Croup

Risk calculators and risk factors for Croup medical therapy

Medical Therapy

The treatment of croup depends on the severity of symptoms.

One of the simplest ways to treat croup is to inhale hot steam. This was the sole treatment for croup throughout the nineteenth and most of the twentieth century. Hospitals today use a "blowby" apparatus for this purpose. Simpler remedies include taking the child outside in moist night air, or alternatively exposing the child to steam from a hot bath or a humidifier. These techniques may help in some cases, but there is little hard evidence to support their efficacy.

Mild croup with no stridor, or stridor only on agitation, and just a cough may simply be observed, or a dose of inhaled, oral, or injected steroids may be given. When steroids are given, dexamethasone is often used, due to its prolonged physiologic effects.

Moderate to severe croup may require nebulized adrenaline in addition to steroids. Oxygen may be needed if hypoxia develops. Children with moderate or severe croup are typically hospitalized for observation, usually for less than a day. Intubation is rarely needed (less than 1% of hospitalized patients).


Medical Therapy Based on the Drug Adapted from Lancet. 2008;371(9609):329–339. [1]

▸ Click on the following categories to expand treatment regimens.

Croup Medical Therapy

  ▸  Glucocorticoids

  ▸  Epinephrine

  ▸  Oxygen

  ▸  Mist Therapy

  ▸  Antibiotics

  ▸  Heliox

Glucocorticoids
Mild to Moderate Croup
Dexamethasone 0.60 mg/kg PO/IM/IV, single dose (max. 10 mg)
OR
Budesonide 2mg nebulized
Severe Croup
Dexamethasone 0.60 mg/kg IM/IV, single dose
OR
Budesonide 2mg nebulized
Epinephrine
Mild Croup
There are no indications of nebulized epinephrine for Mild Croup
Moderate to Severe Croup
Nebulized racemic epinephrine (2.25%) 0.05 mL/kg (max. 0.5mL) in 3mL of normal saline for 15 min
OR
Nebulized L-epinephrine 0.5mL/kg (max 5mL) for 15 min
Repeat as needed
Oxygen
▸ Humidified oxygen should be given to patients with hypoxia or severe respiratory distress
Mist Therapy
Antibiotics
Antibiotic are not indicated to treat viral croup
Antibiotics are use for complications, such as bacterial tracheitis or epiglottitis
Heliox
▸ There is no sufficient data that recommends the general use of heliox in patients with croup.[2][3][4]
▸ Some studies have shown a short-term benefit of heliox inhalation in children with moderate to severe croup.[5][6]

Medical Therapy Based on the Severity Adapted from Pediatric Pulmonology 49:421–429 (2014) [7]

▸ Click on the following categories to expand treatment regimens.

Croup Medical Therapy

  ▸  Mild

  ▸  Moderate

  ▸  Severe

Mild
Dexamethasone 0.60 mg/kg PO single dose (max. 10 mg)
OR
Budesonide 2mg nebulized
Moderate
Nebulized racemic epinephrine (2.25%) 0.05 mL/kg (max. 0.5mL) in 3mL of normal saline for 15 min
OR
Nebulized L-epinephrine 0.5mL/kg (max 5mL) for 15 min
Repeat as needed
PLUS
Dexamethasone 0.60 mg/kg PO/IM single dose (max. 10 mg)
OR
Budesonide 2mg nebulized
Severe
Nebulized racemic epinephrine (2.25%) 0.05 mL/kg (max. 0.5mL) in 3mL of normal saline for 15 min
OR
Nebulized L-epinephrine 0.5mL/kg (max 5mL) for 15 min
Repeat as needed
PLUS
Dexamethasone 0.60 mg/kg IM/IV single dose (max. 10 mg)
AND
▸ Hospital admission

References

  1. Bjornson, Candice L; Johnson, David W (2008). "Croup". The Lancet. 371 (9609): 329–339. doi:10.1016/S0140-6736(08)60170-1. ISSN 0140-6736.
  2. Weber, J. E.; Chudnofsky, C. R.; Younger, J. G.; Larkin, G. L.; Boczar, M.; Wilkerson, M. D.; Zuriekat, G. Y.; Nolan, B.; Eicke, D. M. (2001). "A Randomized Comparison of Helium-Oxygen Mixture (Heliox) and Racemic Epinephrine for the Treatment of Moderate to Severe Croup". PEDIATRICS. 107 (6): e96–e96. doi:10.1542/peds.107.6.e96. ISSN 0031-4005.
  3. Beckmann, Kathleen R.; Brueggemann, William Martin (2000). "HELIOX TREATMENT OF SEVERE CROUP". The American Journal of Emergency Medicine. 18 (6): 735–736. doi:10.1016/S0735-6757(00)90309-7. ISSN 0735-6757.
  4. Gupta, Vineet K.; Cheifetz, Ira M. (2005). "Heliox administration in the pediatric intensive care unit: An evidence-based review". Pediatric Critical Care Medicine. 6 (2): 204–211. doi:10.1097/01.PCC.0000154946.62733.94. ISSN 1529-7535.
  5. Irene Moraa, Nancy Sturman, Treasure McGuire & Mieke L. van Driel (2013). "Heliox for croup in children". The Cochrane database of systematic reviews. 12: CD006822. doi:10.1002/14651858.CD006822.pub4. PMID 24318607.
  6. Sarah Kline-Krammes, Christina Reed, John S. Jr Giuliano, Hamilton P. Schwartz, Michael Forbes, John Pope, James Besunder, Michael D. Gothard, Kerry Russell & Michael T. Bigham (2012). "Heliox in children with croup: a strategy to hasten improvement". Air medical journal. 31 (3): 131–137. doi:10.1016/j.amj.2011.08.004. PMID 22541348. Unknown parameter |month= ignored (help)
  7. Petrocheilou, Argyri; Tanou, Kalliopi; Kalampouka, Efthimia; Malakasioti, Georgia; Giannios, Christos; Kaditis, Athanasios G. (2014). "Viral croup: Diagnosis and a treatment algorithm". Pediatric Pulmonology. 49 (5): 421–429. doi:10.1002/ppul.22993. ISSN 8755-6863.

Template:WH Template:WS