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{{CMG}}
==Overview==
==Overview==
* Supplemental oxygen is needed for all patients
In every neonate presented with cyanosis and shock, [[congenital heart disease]] dependent on [[patency ductus arteriosus]] should be considered. The physiologic constriction of [[ductus arteriosus]] after birth in a [[neonate]] whose [[pulmonary blood flow]] or [[aortic blood flow]] is dependent on [[PDA]] leads to [[shock]] and [[collapse]] in the [[neonate]]. Infusion of [[prostaglan]] in such a [[neonate]] is life-saving and keeps [[patency ductus arteriosus]]. Treatment of underlying causes of peripheral cyanosis such as tamponade or cardiogenic shock  due to [[low cardiac output state]] and [[peripheral vasoconstriction]] lead to disappearing of [[cyanosis]].
* Mechanical ventilation and intubation for respiratory support may be indicated
 
* Underlying etiologies, and patients in shock need to be treated as clinically indicated
 
== Medical Therapy ==
 
* Patients in [[congestive heart failure]] may need a diuretic or [[afterload]] reduction.
== Medical therapy ==
 
 
*The mainstay of therapy for [[cyanosis]] is the treatment of underlying causes of [[cyanosis]].
* In cyanotic [[congenital heart disease ]] whether the flow is dependent on patency ductus arteriosus, infusion of  [[prostaglandin]] E1  is recommended.
* In the setting of pulmonary disease such as [[pneumonia]], [[pleural effusion]], treatment of underlying disease and [[oxygen]] therapy are advised.
* In the setting of low cardiac output state such as [[pulmonary thromboembolism]] and [[ cardiogenic shock]], management of thrombotic events and [[oxygen]] supplement therapy is recommended.
* In [[methemoglobinemia]] discontinuing the medications related disorder and administration of [[methylene blue]] is recommended.
 
== Medical therapy of [[Cyanosis]] ==
The mainstay of therapy is treatment of underlying causes of [[cyanosis]].<ref name="CucereaSimon2016">{{cite journal|last1=Cucerea|first1=Manuela|last2=Simon|first2=Marta|last3=Moldovan|first3=Elena|last4=Ungureanu|first4=Marcela|last5=Marian|first5=Raluca|last6=Suciu|first6=Laura|title=Congenital Heart Disease Requiring Maintenance of Ductus Arteriosus in Critically Ill Newborns Admitted at A Tertiary Neonatal Intensive Care Unit|journal=The Journal of Critical Care Medicine|volume=2|issue=4|year=2016|pages=185–191|issn=2393-1817|doi=10.1515/jccm-2016-0031}}</ref>
<ref name="HenretigGribetz2011">{{cite journal|last1=Henretig|first1=Fred M.|last2=Gribetz|first2=Bruce|last3=Kearney|first3=Thomas|last4=Lacouture|first4=Peter|last5=Loveiov|first5=Frederick H.|title=Interpretation of Color Change in Blood with Varying Degree of Methemoglobinemia|journal=Journal of Toxicology: Clinical Toxicology|volume=26|issue=5-6|year=2011|pages=293–301|issn=0731-3810|doi=10.1080/15563658809167094}}</ref><ref name="TisiWolfe1970">{{cite journal|last1=Tisi|first1=G M|last2=Wolfe|first2=W G|last3=Fallat|first3=R J|last4=Nadel|first4=J A|title=Effects of O2 and CO2 on airway smooth muscle following pulmonary vascular occlusion.|journal=Journal of Applied Physiology|volume=28|issue=5|year=1970|pages=570–573|issn=8750-7587|doi=10.1152/jappl.1970.28.5.570}}</ref><ref name="Austin1973">{{cite journal|last1=Austin|first1=John H. M.|title=Intrapulmonary Airway Narrowing after Pulmonary Thromboembolism in Dogs|journal=Investigative Radiology|volume=8|issue=5|year=1973|pages=315–321|issn=0020-9996|doi=10.1097/00004424-197309000-00003}}</ref><ref>{{cite journal|doi=10.1164/rccm.201503-0584OC.}}</ref><ref name="SmedleyGrocott2013">{{cite journal|last1=Smedley|first1=Tom|last2=Grocott|first2=Michael PW|title=Acute high-altitude illness: a clinically orientated review|journal=British Journal of Pain|volume=7|issue=2|year=2013|pages=85–94|issn=2049-4637|doi=10.1177/2049463713489539}}</ref>
 
'''<span style="font-size:85%">'''Abbreviations:'''
'''d-TGA:''' [[ dextro-Transposition of great arteries]];
'''PDA:''' [[Patent ductus arteriosus]]  ;
'''ASD:''' [[Atrial septal defect]];
'''VSD:''' [[Ventricular septal defect]];
'''TOF:''' [[Tetralogy of fallot]];
'''CHD:''' [[Congenital heart disease]];
'''PS:''' [[Pulmonary stenosis]];
'''PTE:''' [[Pulmonary thromboembolism]];
'''AS:''' [[Aortic stenosis]];
'''ARDS:''' [[Acute respiratory distress syndrome]];
'''PFO:''' [[Patent foramen ovale]];
'''PVR:''' [[Pulmonary vascular resistance]];
'''SpO2:''' [[ Peripheral capillary oxygen saturation.]];
'''FiO2:''' [[Fraction of inspired oxygen]];
'''PEEP:''' [[Positive end-expiratory pressure]];
</span>
<br>
{| class="wikitable sortable"
|-
!Causes of [[cyanosis]]!![[CHD]]  with severe restriction of [[pulmonary blood flow]]!![[CHD]] with severe restriction of [[systemic blood flow]]!![[CHD]] due to bidirectional shunt!![[Methemoglobinemia]]!![[PTE]]!![[Cardiogenic shock]]!![[ARDS]]!![[Acute mountain sickness]]
|-
 
||'''Note'''||
*[[Pulmonary atresia]]
*[[Tricuspid atresia]]
*[[Tetralogy of Fallot]] with [[pulmonary atresia]]
||
*[[Severe AS]]
*[[Coarctation aorta]]
*[[Interrupted aortic arch]]
*[[Hypoplastic  left heart syndrome]]
 
||
*[[TGA]]
*[[Truncus arteriosus]]
*[[Double outlet right ventricle]]
|| Complication of exposue to some drugs such as [[nitrites]] and [[aniline]] leading to [[dizziness]] , [[coma]], chocolate-brown discoloration of [[blood]] samples, [[respiratory distress]] [[seizures]] and [[myocardial ischemia]] 
|| [[Hypoxia]] due to V/Q  mismatch, low [[cardiac out-put]] state, acute [[ right ventricular dilation]] and increased [[pulmonary vascular resistance]]
|| [[Cyanosis]], [[olyguria]], [[altered mental status]]  ||
*SpO2/FiO2 <315, No PEEP requirement
*Complication of [[pneumonia]], [[non cardiogenic shock]], [[drug overdose]], [[trauma]]
||Leakage of large molecules  into alveolar space  leading rich protein [[pulmonary edema]]
|-
| '''Mechanism of [[cyanosis]]''' || [[ Hypoxia]] and [[cyanosis]] due to constriction of the [[ductus arteriosus]] after birth and dependency of the [[Pulmonary circulation]] on the [[patency of the ductus arteriosus]]||[[Cyanosis]],[[systemic hypoperfusion]], [[circulatory collapse]], [[metabolic acidosis]], [[shock]] due to constriction ductus arteriosus and dependency systemic circulation on  [[PDA]] after birth  ||  Constriction of [[PDA]] after birth leading decreased systemic circulation due to mixing of [[pulmonary]] and [[systemic blood flow]] via [[PDA]]
||
*[[Oxidative sresss]] , [[methemoglobin]] level > 10 % total [[hemoglobin]]
* [[Cyanosis]] refractory to [[oxygen]] therapy,
||
*[[V/Q mismatches]]  due to small airway constriction in both nonperfused and nonembolized areas of [[lung]], reduced [[surfactant]] production, [[pulmonary edema]], [[atelectasis]]
*Right to left shunt via [[PFO]] leading [[central cyanosis]]
* Low [[cardiac output]] state due to [[right ventricular dilation]] and increased [[PVR]] leading to [[peripheral cyanosia]]
|| Low [[cardiac output]] state due to [[myocardial infarction]] and [[pump failure]] leading to  vasoconstriction and [[peripheral cyanosis]]||
*Increased alveolar vascular permeability
*Interstitial and alveolar [[pulmonary edema]]
 
||  [[Central cyanosis]] due to alveolar [[hypoxia]] , [[pulmonary vasoconstriction]], [[ pulmonary hypertension]]
|-
|'''Treatment'''||[[Prostaglandin]] E1 ||[[Prostaglandin ]] E1||[[Prostaglandin]] E1||
*[[Methylenblue]] infusion
* Hyperbaric [[oxygen]] therapy
*[[Ascorbi:c acid]]
||
*[[Anticoagulant therapy]]
*[[Fibrinolytic]] therapy in case of [[ collapse]] and [[shock]]
*[[ Mechanical thrombectomy]]
 
||[[Coronary revascularization ]]||
*[[Extracorporeal membrane oxygenation]]
*[[High-frequency oscillatory ventilation]]
*[[Neuromuscular blocking agents]]
*Intravenous β-2 agonist ([[Salbutamol]])
||
*Descent
*Supplement [[oxygen]] therapy
*Portable hyperbaric chamber
*[[Nifedipine]]
|}
 
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
[[Category:Needs content]]
[[Category:Up-To-Date]]
[[Category:Primary care]]

Latest revision as of 20:12, 29 January 2021

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Zand, M.D.[2] Mohammed Abdelwahed M.D[3]

Overview

In every neonate presented with cyanosis and shock, congenital heart disease dependent on patency ductus arteriosus should be considered. The physiologic constriction of ductus arteriosus after birth in a neonate whose pulmonary blood flow or aortic blood flow is dependent on PDA leads to shock and collapse in the neonate. Infusion of prostaglan in such a neonate is life-saving and keeps patency ductus arteriosus. Treatment of underlying causes of peripheral cyanosis such as tamponade or cardiogenic shock due to low cardiac output state and peripheral vasoconstriction lead to disappearing of cyanosis.


Medical therapy

Medical therapy of Cyanosis

The mainstay of therapy is treatment of underlying causes of cyanosis.[1] [2][3][4][5][6]

Abbreviations: d-TGA: dextro-Transposition of great arteries; PDA: Patent ductus arteriosus  ; ASD: Atrial septal defect; VSD: Ventricular septal defect; TOF: Tetralogy of fallot; CHD: Congenital heart disease; PS: Pulmonary stenosis; PTE: Pulmonary thromboembolism; AS: Aortic stenosis; ARDS: Acute respiratory distress syndrome; PFO: Patent foramen ovale; PVR: Pulmonary vascular resistance; SpO2: Peripheral capillary oxygen saturation.; FiO2: Fraction of inspired oxygen; PEEP: Positive end-expiratory pressure;

Causes of cyanosis CHD with severe restriction of pulmonary blood flow CHD with severe restriction of systemic blood flow CHD due to bidirectional shunt Methemoglobinemia PTE Cardiogenic shock ARDS Acute mountain sickness
Note Complication of exposue to some drugs such as nitrites and aniline leading to dizziness , coma, chocolate-brown discoloration of blood samples, respiratory distress seizures and myocardial ischemia Hypoxia due to V/Q mismatch, low cardiac out-put state, acute right ventricular dilation and increased pulmonary vascular resistance Cyanosis, olyguria, altered mental status Leakage of large molecules into alveolar space leading rich protein pulmonary edema
Mechanism of cyanosis Hypoxia and cyanosis due to constriction of the ductus arteriosus after birth and dependency of the Pulmonary circulation on the patency of the ductus arteriosus Cyanosis,systemic hypoperfusion, circulatory collapse, metabolic acidosis, shock due to constriction ductus arteriosus and dependency systemic circulation on PDA after birth Constriction of PDA after birth leading decreased systemic circulation due to mixing of pulmonary and systemic blood flow via PDA Low cardiac output state due to myocardial infarction and pump failure leading to vasoconstriction and peripheral cyanosis
  • Increased alveolar vascular permeability
  • Interstitial and alveolar pulmonary edema
Central cyanosis due to alveolar hypoxia , pulmonary vasoconstriction, pulmonary hypertension
Treatment Prostaglandin E1 Prostaglandin E1 Prostaglandin E1 Coronary revascularization

References

  1. Cucerea, Manuela; Simon, Marta; Moldovan, Elena; Ungureanu, Marcela; Marian, Raluca; Suciu, Laura (2016). "Congenital Heart Disease Requiring Maintenance of Ductus Arteriosus in Critically Ill Newborns Admitted at A Tertiary Neonatal Intensive Care Unit". The Journal of Critical Care Medicine. 2 (4): 185–191. doi:10.1515/jccm-2016-0031. ISSN 2393-1817.
  2. Henretig, Fred M.; Gribetz, Bruce; Kearney, Thomas; Lacouture, Peter; Loveiov, Frederick H. (2011). "Interpretation of Color Change in Blood with Varying Degree of Methemoglobinemia". Journal of Toxicology: Clinical Toxicology. 26 (5–6): 293–301. doi:10.1080/15563658809167094. ISSN 0731-3810.
  3. Tisi, G M; Wolfe, W G; Fallat, R J; Nadel, J A (1970). "Effects of O2 and CO2 on airway smooth muscle following pulmonary vascular occlusion". Journal of Applied Physiology. 28 (5): 570–573. doi:10.1152/jappl.1970.28.5.570. ISSN 8750-7587.
  4. Austin, John H. M. (1973). "Intrapulmonary Airway Narrowing after Pulmonary Thromboembolism in Dogs". Investigative Radiology. 8 (5): 315–321. doi:10.1097/00004424-197309000-00003. ISSN 0020-9996.
  5. . doi:10.1164/rccm.201503-0584OC. Check |doi= value (help). Missing or empty |title= (help)
  6. Smedley, Tom; Grocott, Michael PW (2013). "Acute high-altitude illness: a clinically orientated review". British Journal of Pain. 7 (2): 85–94. doi:10.1177/2049463713489539. ISSN 2049-4637.