Acute respiratory distress syndrome natural history, complications, and prognosis: Difference between revisions

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{{Acute respiratory distress syndrome}}
{{Acute respiratory distress syndrome}}
{{CMG}}, {{AE}} {{BShaller}}
{{CMG}}, {{AE}} {{BShaller}}


==Overview==
==Overview==
ARDS usually develops within 24 to 48 hours of the initial [[injury]] or [[illness]] and typically progresses over the course of 1 to 2 weeks (please refer to [[Acute respiratory distress syndrome pathophysiology|'''Pathophysiology of ARDS''']] for a discussion of this topic in greater detail). Failure to diagnose and treat ARDS early on is associated with a high [[mortality rate]] and may result in lifelong [[complications]] among survivors.
If left untreated, 70% of patients with ARDS may progress to [[mortality]].<ref name="pmid11056707">{{cite journal| author=Reynolds HN, McCunn M, Borg U, Habashi N, Cottingham C, Bar-Lavi Y| title=Acute respiratory distress syndrome: estimated incidence and mortality rate in a 5 million-person population base. | journal=Crit Care | year= 1998 | volume= 2 | issue= 1 | pages= 29-34 | pmid=11056707 | doi=10.1186/cc121 | pmc=28999 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11056707  }} </ref> Common complications to ARDS include [[weakness]], impaired [[spirometry|lung function]], and [[brain death]]. Prognosis for patients with ARDS is generally poor and varies based on the severity of illness, the precipitating insult, and medical comorbidities.


==Natural History==
==Natural History==
The first signs of ARDS typically present within 24 to 48 hours of the precipitating [[illness]] or [[injury]] and progress over the course of 1 to 2 weeks. The early clinical features of ARDS include:
If left untreated, 70% of patients with ARDS may progress to [[mortality]].<ref name="pmid11056707">{{cite journal| author=Reynolds HN, McCunn M, Borg U, Habashi N, Cottingham C, Bar-Lavi Y| title=Acute respiratory distress syndrome: estimated incidence and mortality rate in a 5 million-person population base. | journal=Crit Care | year= 1998 | volume= 2 | issue= 1 | pages= 29-34 | pmid=11056707 | doi=10.1186/cc121 | pmc=28999 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11056707  }} </ref>
*[[Hypoxemia]] (a declining peripheral blood oxygen saturation [SpO<sub>2</sub>] on [[pulse oximetry]] or a declining partial pressure of oxygen [PaO<sub>2</sub>] on [[arterial blood gas]] analysis) requiring high concentrations of supplemental oxygen (i.e., a higher [[fraction of inspired oxygen]] [FIO<sub>2</sub>]) or positive pressure ventilation (i.e., a higher [[continuous positive airway pressure]] [CPAP] or a higher [[positive end-expiratory pressure]] [PEEP]) in order to maintain acceptable blood oxygenation
*[[Tachypnea]] and [[Dyspnea|labored breathing]]
*[[Tachycardia]]
*Signs or symptoms that suggest worsening of the underlying illness
 
Left untreated, the [[mortality rate]] from ARDS is estimated to be upwards of 70%.<ref name="pmid11056707">{{cite journal| author=Reynolds HN, McCunn M, Borg U, Habashi N, Cottingham C, Bar-Lavi Y| title=Acute respiratory distress syndrome: estimated incidence and mortality rate in a 5 million-person population base. | journal=Crit Care | year= 1998 | volume= 2 | issue= 1 | pages= 29-34 | pmid=11056707 | doi=10.1186/cc121 | pmc=28999 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11056707  }} </ref>


==Complications==
==Complications==
[[Complications|Long-term sequelae]] of ARDS are common, however, they are more likely to develop among those who do not receive early or adequate treatment. They include:
Complications of ARDS are common and more likely to develop among patients who do not receive early or adequate treatment. They include:
*Significant [[weakness]] due to [[muscle atrophy|critical illness myoneuropathy and muscle atrophy]] as a result of long-term immobilization, sometimes resulting in lifelong physical disability
*Significant [[weakness]] due to [[muscle atrophy|critical illness myoneuropathy and muscle atrophy]] as a result of long-term immobilization
*Impaired [[Spirometry|lung function]]
*Impaired [[Spirometry|lung function]]
*Chronic [[Mechanical ventilation|ventilator dependency]] due to advanced weakness and [[atrophy]] of the [[muscles of respiration]]
*Chronic [[Mechanical ventilation|ventilator dependency]] due to advanced weakness and [[atrophy]] of the [[muscles of respiration]]
*[[Fibrotic lung disease|Pulmonary fibrosis]] and [[restrictive lung disease]]
*[[Fibrotic lung disease|Pulmonary fibrosis]] and [[restrictive lung disease]]
*[[Psychiatric illness]] (e.g., [[post-traumatic stress disorder]] [PTSD], [[anxiety]], [[depression]])
*[[Psychiatric illness]], including [[post-traumatic stress disorder]] (PTSD), [[anxiety]], and [[depression]]
*Impaired [[cognition]]
*Impaired [[cognition]]
*[[Persistent vegetative state]] or [[brain death]] due to prolonged hypoxemia
*[[Persistent vegetative state]] or [[brain death]] due to prolonged [[hypoxemia]]


The most common complications of ARDS are those associated with a prolonged [[ICU]] stay:
Common complications of ARDS associated with a prolonged [[ICU]] stay include:
*[[Nosocomial infection|Secondary or nosocomial infections]] (e.g., [[hospital-acquired pneumonia|ventilator-associated pneumonia]] [VAP] or [[Intravascular device related infections|central line-associated blood stream infection]] [CLABSI])
*[[Nosocomial infection|Secondary or nosocomial infections]] (e.g., [[hospital-acquired pneumonia|ventilator-associated pneumonia]] (VAP) or [[Intravascular device related infections|central line-associated blood stream infection]] (CLABSI))
*[[Venous thromboembolism|Venous thromboembolic events]] (e.g., [[deep vein thrombosis]] [DVT] or [[pulmonary embolism]] [PE])
*[[Venous thromboembolism|Venous thromboembolic events]] (e.g., [[deep vein thrombosis]] (DVT) or [[pulmonary embolism]] (PE))
*[[GI bleed|Gastrointestinal bleeding]] (often secondary to [[Stress ulcer|stress ulcers]])
*[[GI bleed|Gastrointestinal bleeding]] (often secondary to [[Stress ulcer|stress ulcers]])
*[[Pressure ulcers]] and poor [[wound healing]]
*[[Pressure ulcers]] and poor [[wound healing]]
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==Prognosis==
==Prognosis==
Prognosis for patients with ARDS varies based on the [[Acute respiratory distress syndrome diagnostic criteria|severity of illness]], the [[Acute respiratory distress syndrome causes|precipitating insult}}, and [[Acute respiratory distress syndrome risk actors|medical comorbidities]]:
Prognosis for patients with ARDS is generally poor and varies based on the severity of illness, the precipitating insult, and medical comorbidities:<ref name="pmid11056707">{{cite journal| author=Reynolds HN, McCunn M, Borg U, Habashi N, Cottingham C, Bar-Lavi Y| title=Acute respiratory distress syndrome: estimated incidence and mortality rate in a 5 million-person population base. | journal=Crit Care | year= 1998 | volume= 2 | issue= 1 | pages= 29-34 | pmid=11056707 | doi=10.1186/cc121 | pmc=28999 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11056707  }} </ref><ref name="pmid22797452">{{cite journal| author=ARDS Definition Task Force. Ranieri VM, Rubenfeld GD, Thompson BT, Ferguson ND, Caldwell E et al.| title=Acute respiratory distress syndrome: the Berlin Definition. | journal=JAMA | year= 2012 | volume= 307 | issue= 23 | pages= 2526-33 | pmid=22797452 | doi=10.1001/jama.2012.5669 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22797452  }} </ref><ref name="pmid12594312">{{cite journal| author=Herridge MS, Cheung AM, Tansey CM, Matte-Martyn A, Diaz-Granados N, Al-Saidi F et al.| title=One-year outcomes in survivors of the acute respiratory distress syndrome. | journal=N Engl J Med | year= 2003 | volume= 348 | issue= 8 | pages= 683-93 | pmid=12594312 | doi=10.1056/NEJMoa022450 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12594312  }} </ref><ref name="pmid20384998">{{cite journal| author=Linko R, Suojaranta-Ylinen R, Karlsson S, Ruokonen E, Varpula T, Pettilä V et al.| title=One-year mortality, quality of life and predicted life-time cost-utility in critically ill patients with acute respiratory failure. | journal=Crit Care | year= 2010 | volume= 14 | issue= 2 | pages= R60 | pmid=20384998 | doi=10.1186/cc8957 | pmc=2887181 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20384998  }} </ref><ref name="pmid24435201">{{cite journal| author=Wang CY, Calfee CS, Paul DW, Janz DR, May AK, Zhuo H et al.| title=One-year mortality and predictors of death among hospital survivors of acute respiratory distress syndrome. | journal=Intensive Care Med | year= 2014 | volume= 40 | issue= 3 | pages= 388-96 | pmid=24435201 | doi=10.1007/s00134-013-3186-3 | pmc=3943651 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24435201  }} </ref><ref name="pmid20507948">{{cite journal| author=Sheu CC, Gong MN, Zhai R, Chen F, Bajwa EK, Clardy PF et al.| title=Clinical characteristics and outcomes of sepsis-related vs non-sepsis-related ARDS. | journal=Chest | year= 2010 | volume= 138 | issue= 3 | pages= 559-67 | pmid=20507948 | doi=10.1378/chest.09-2933 | pmc=2940067 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20507948  }} </ref>
*The [[Acute respiratory distress syndrome historical perspective|ARDS Definition Task Force]] calculated 90-day morality rates for mild, moderate, and severe ARDS as 27%, 32%, and 45%, respectively<ref name="pmid22797452">{{cite journal| author=ARDS Definition Task Force. Ranieri VM, Rubenfeld GD, Thompson BT, Ferguson ND, Caldwell E et al.| title=Acute respiratory distress syndrome: the Berlin Definition. | journal=JAMA | year= 2012 | volume= 307 | issue= 23 | pages= 2526-33 | pmid=22797452 | doi=10.1001/jama.2012.5669 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22797452  }} </ref>
*90-day morality rates for mild, moderate, and severe ARDS as 27%, 32%, and 45%, respectively
*The 1-year mortality rate for patients with ARDS who survive to hospital discharge varies widely between different studies and is estimated to be anywhere from 11% to over 40%<ref name="pmid12594312">{{cite journal| author=Herridge MS, Cheung AM, Tansey CM, Matte-Martyn A, Diaz-Granados N, Al-Saidi F et al.| title=One-year outcomes in survivors of the acute respiratory distress syndrome. | journal=N Engl J Med | year= 2003 | volume= 348 | issue= 8 | pages= 683-93 | pmid=12594312 | doi=10.1056/NEJMoa022450 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12594312  }} </ref><ref name="pmid20384998">{{cite journal| author=Linko R, Suojaranta-Ylinen R, Karlsson S, Ruokonen E, Varpula T, Pettilä V et al.| title=One-year mortality, quality of life and predicted life-time cost-utility in critically ill patients with acute respiratory failure. | journal=Crit Care | year= 2010 | volume= 14 | issue= 2 | pages= R60 | pmid=20384998 | doi=10.1186/cc8957 | pmc=2887181 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20384998  }} </ref><ref name="pmid24435201">{{cite journal| author=Wang CY, Calfee CS, Paul DW, Janz DR, May AK, Zhuo H et al.| title=One-year mortality and predictors of death among hospital survivors of acute respiratory distress syndrome. | journal=Intensive Care Med | year= 2014 | volume= 40 | issue= 3 | pages= 388-96 | pmid=24435201 | doi=10.1007/s00134-013-3186-3 | pmc=3943651 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24435201  }} </ref>
*1-year mortality rate for patients with ARDS who survive to hospital discharge varies widely and is estimated to be beween 11% to over 40%
*One study of patients diagnosed with ARDS in Maryland, United States, from 1992 through 1995 calculated an in-hospital mortality rate of 36% to 52%<ref name="pmid11056707">{{cite journal| author=Reynolds HN, McCunn M, Borg U, Habashi N, Cottingham C, Bar-Lavi Y| title=Acute respiratory distress syndrome: estimated incidence and mortality rate in a 5 million-person population base. | journal=Crit Care | year= 1998 | volume= 2 | issue= 1 | pages= 29-34 | pmid=11056707 | doi=10.1186/cc121 | pmc=28999 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11056707  }} </ref>
*Between 1992-1995, an in-hospital mortality rate between 36%-52%
*The mortality rate among patients with ARDS due to [[trauma]] appears to be lower than among patients with ARDS due to [[sepsis]]<ref name="pmid20507948">{{cite journal| author=Sheu CC, Gong MN, Zhai R, Chen F, Bajwa EK, Clardy PF et al.| title=Clinical characteristics and outcomes of sepsis-related vs non-sepsis-related ARDS. | journal=Chest | year= 2010 | volume= 138 | issue= 3 | pages= 559-67 | pmid=20507948 | doi=10.1378/chest.09-2933 | pmc=2940067 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20507948  }} </ref>
*Lower mortality rate among patients with ARDS due to [[trauma]] compared patients with ARDS due to [[sepsis]]


==References==
==References==
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[[Category:Pulmonology]]
[[Category:Pulmonology]]
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1], Associate Editor(s)-in-Chief: Brian Shaller, M.D. [2]

Overview

If left untreated, 70% of patients with ARDS may progress to mortality.[1] Common complications to ARDS include weakness, impaired lung function, and brain death. Prognosis for patients with ARDS is generally poor and varies based on the severity of illness, the precipitating insult, and medical comorbidities.

Natural History

If left untreated, 70% of patients with ARDS may progress to mortality.[1]

Complications

Complications of ARDS are common and more likely to develop among patients who do not receive early or adequate treatment. They include:

Common complications of ARDS associated with a prolonged ICU stay include:

Prognosis

Prognosis for patients with ARDS is generally poor and varies based on the severity of illness, the precipitating insult, and medical comorbidities:[1][2][3][4][5][6]

  • 90-day morality rates for mild, moderate, and severe ARDS as 27%, 32%, and 45%, respectively
  • 1-year mortality rate for patients with ARDS who survive to hospital discharge varies widely and is estimated to be beween 11% to over 40%
  • Between 1992-1995, an in-hospital mortality rate between 36%-52%
  • Lower mortality rate among patients with ARDS due to trauma compared patients with ARDS due to sepsis

References

  1. 1.0 1.1 1.2 Reynolds HN, McCunn M, Borg U, Habashi N, Cottingham C, Bar-Lavi Y (1998). "Acute respiratory distress syndrome: estimated incidence and mortality rate in a 5 million-person population base". Crit Care. 2 (1): 29–34. doi:10.1186/cc121. PMC 28999. PMID 11056707.
  2. ARDS Definition Task Force. Ranieri VM, Rubenfeld GD, Thompson BT, Ferguson ND, Caldwell E; et al. (2012). "Acute respiratory distress syndrome: the Berlin Definition". JAMA. 307 (23): 2526–33. doi:10.1001/jama.2012.5669. PMID 22797452.
  3. Herridge MS, Cheung AM, Tansey CM, Matte-Martyn A, Diaz-Granados N, Al-Saidi F; et al. (2003). "One-year outcomes in survivors of the acute respiratory distress syndrome". N Engl J Med. 348 (8): 683–93. doi:10.1056/NEJMoa022450. PMID 12594312.
  4. Linko R, Suojaranta-Ylinen R, Karlsson S, Ruokonen E, Varpula T, Pettilä V; et al. (2010). "One-year mortality, quality of life and predicted life-time cost-utility in critically ill patients with acute respiratory failure". Crit Care. 14 (2): R60. doi:10.1186/cc8957. PMC 2887181. PMID 20384998.
  5. Wang CY, Calfee CS, Paul DW, Janz DR, May AK, Zhuo H; et al. (2014). "One-year mortality and predictors of death among hospital survivors of acute respiratory distress syndrome". Intensive Care Med. 40 (3): 388–96. doi:10.1007/s00134-013-3186-3. PMC 3943651. PMID 24435201.
  6. Sheu CC, Gong MN, Zhai R, Chen F, Bajwa EK, Clardy PF; et al. (2010). "Clinical characteristics and outcomes of sepsis-related vs non-sepsis-related ARDS". Chest. 138 (3): 559–67. doi:10.1378/chest.09-2933. PMC 2940067. PMID 20507948.


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