Chronic obstructive pulmonary disease exacerbation resident survival guide: Difference between revisions

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{{CMG}}; {{AE}} {{AK}}
{{CMG}};{{AE}}{{AK}}
 
==Definition==  
==Definition==
COPD exacerbation commonly caused by infections, should be recognized when any of the following symptoms is noticed in a chronic COPD patient:worsening cough, increasing dyspnea, increasing in sputum production more than the baseline for chronic COPD patients.<ref name="pmid17507545">{{cite journal| author=Rabe KF, Hurd S, Anzueto A, Barnes PJ, Buist SA, Calverley P et al.| title=Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summary. | journal=Am J Respir Crit Care Med | year= 2007 | volume= 176 |issue= 6 | pages= 532-55 | pmid=17507545 | doi=10.1164/rccm.200703-456SO | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17507545  }} </ref>
* Exacerbation of COPD is an acute event characterized by a worsening of the patient’s respiratory symptoms that is beyond normal day-to-day variations and leads to a change in medication.<ref name="Burge-2003">{{Cite journal  | last1 = Burge | first1 = S. | last2 = Wedzicha | first2 = JA. | title = COPD exacerbations: definitions and classifications. | journal = Eur Respir J Suppl | volume = 41 | issue =  | pages = 46s-53s | month = Jun | year = 2003 | doi =  | PMID = 12795331 }}</ref><ref name="Celli-2007">{{Cite journal  | last1 = Celli | first1 = BR. | last2 = Barnes | first2 = PJ. | title = Exacerbations of chronic obstructive pulmonary disease. | journal = Eur Respir J | volume = 29 | issue = 6 | pages = 1224-38 | month = Jun | year = 2007 | doi = 10.1183/09031936.00109906 | PMID = 17540785 }}</ref><ref name="Rodriguez-Roisin-2000">{{Cite journal  | last1 = Rodriguez-Roisin | first1 = R. | title = Toward a consensus definition for COPD exacerbations. | journal = Chest | volume = 117 | issue = 5 Suppl 2 | pages = 398S-401S | month = May | year = 2000 | doi =  | PMID = 10843984 }}</ref>
 
* The diagnosis of an exacerbation relies exclusively on the clinical presentation of the patient complaining of an acute change of symptoms ('''baseline dyspnea, cough, and/or sputum production''') that is beyond normal day-to-day variation.<ref name="Vestbo-2013">{{Cite journal | last1 = Vestbo | first1 = J. | last2 = Hurd | first2 = SS. | last3 = Agustí | first3 = AG. | last4 = Jones | first4 = PW. | last5 = Vogelmeier | first5 = C. | last6 = Anzueto | first6 = A. | last7 = Barnes | first7 = PJ. | last8 = Fabbri | first8 = LM. | last9 = Martinez | first9 = FJ. | title = Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summary. | journal = Am J Respir Crit Care Med | volume = 187 | issue = 4 | pages = 347-65 | month = Feb | year = 2013 | doi = 10.1164/rccm.201204-0596PP | PMID = 22878278 }}</ref>


==Causes==
==Causes==
===Life-Threatening Causes===
===Life Threatening Causes===
<SMALL>''Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.''</SMALL>
Include conditions which may result death or permanent disability within 24 hours if left untreated, and some of them may mimic and/or aggravate exacerbations:
* [[Arrhythmia]]
*[[Pneumonia]]
* [[Congestive heart failure]]
*[[PE]]
* [[Pleural effusion]]
*[[Pneumothorax]]
* [[Pneumonia]]
*[[Pleural effusion]]
* [[Pneumothorax]]
*[[CHF]]
* [[Pulmonary embolism]]
*[[Cardiac arrhythmias]]


===Common Causes===
===Common Causes===
* [[Respiratory tract infections]] ()
*Respiratory tract infections 50%(bacterial or viral).
* Unknown (~⅓)
*Exposure to pollutants.
* Air pollutants
*Unknown (⅓ of cases ).


==Treatment Setting and Severity==
==Differential Diagnosis==
{{Family tree/start}}
* [[Asthma]]
{{Family tree |border=2|boxstyle=background: WhiteSmoke;|A1|A1=<div style="float: left; text-align: left; height: 5.5em; width: 9.7em; padding: 1em;">'''COPD Exacerbation''' <BR> ❑ Cough ↑ <BR> ❑ Dyspnea ↑ <BR> ❑ Sputum ↑ </div>}}
* [[CHF]]
{{Family tree |!|}}
* [[PE]]
{{Family tree |border=2|boxstyle=background:WhiteSmoke;|)|B1|B1=<div style="float: left; text-align: left; height: 5em; width: 41em; padding: 1em">
* [[ACS]]
'''1. Oxygen Supplement''' <BR> ❑ Pulse oximetry (maintain Sa<sub>O<sub>2</sub></sub> ≥88—92%)<ref name="Austin-2010">{{Cite journal  | last1 = Austin | first1 = MA. | last2 = Wills | first2 = KE. | last3 = Blizzard | first3 = L. | last4 = Walters | first4 = EH. | last5 = Wood-Baker | first5 = R. | title = Effect of high flow oxygen on mortality in chronic obstructive pulmonary disease patients in prehospital setting: randomised controlled trial. | journal = BMJ | volume = 341 | issue =  | pages = c5462 | month =  | year = 2010 | doi =  | PMID = 20959284 }}</ref> <BR> ❑ Arterial blood gas (if acute or acute-on-chronic respiratory failure is suspected)</div>}}
* [[Pneumothorax]]
{{Family tree |!|}}
* [[Pneumonia]]
{{Family tree |border=2|boxstyle=background:WhiteSmoke;|)|C1|C1=<div style="float: left; text-align: left; height: 7em; width: 39em; padding: 1em">
* [[Atelectasis|Lobar atelectasis]]
'''2. Indications for ICU Admission'''<BR> ❑ Hemodynamic instability <BR> ❑ Changes in mental status (confusion, lethargy, coma) <BR> ❑ Severe dyspnea that responds inadequately to initial emergency therapy <BR> ❑ Worsening hypoxemia (Pa<sub>O<sub>2</sub></sub> <40 mm Hg) and/or respiratory acidosis (pH <7.25)</div>}}
{{Family tree |!| | |!|}}
{{Family tree |border=2|boxstyle=background:WhiteSmoke;|!| |D2|D2=<div style="float: left; text-align: left; height: 23em; width: 40em; padding: 1em">'''2a. Indications for Noninvasive Mechanical Ventilation''' <BR> ❑ Respiratory acidosis (arterial pH < 7.35 or Pa<sub>CO<sub>2</sub></sub> >45 mm Hg) <BR> ❑ Severe dyspnea with clinical signs suggestive of respiratory muscle fatigue <BR> ❑ Increased work of breathing
----
'''2b. Indications for Invasive Mechanical Ventilation''' <BR> ❑ Unable to tolerate NIV or NIV failure <BR> ❑ Respiratory or cardiac arrest <BR> ❑ Respiratory pauses with loss of consciousness or gasping for air <BR> ❑ Diminished consciousness, psychomotor agitation inadequately controlled by sedation <BR> ❑ Massive aspiration <BR> ❑ Persistent inability to remove respiratory secretions <BR> ❑ Heart rate <50/min with loss of alertness <BR> ❑ Severe hemodynamic instability without response to fluids and vasoactive drugs <BR> ❑ Severe ventricular arrhythmias <BR> ❑ Life-threatening hypoxemia in patients unable to tolerate NIV</div>}}
 
{{Family tree |!|}}
{{Family tree |border=2|boxstyle=background:WhiteSmoke;|`|D1|D1=<div style="float: left; text-align: left; height: 23em; width: 41em; padding: 1em">
'''3. Indications for Hospitalization''' <BR> ❑ Marked increase in intensity of symptoms (eg, sudden development of resting dyspnea) <BR> ❑ Severe underlying COPD (GOLD 3—4 categories) <BR> ❑ Onset of new physical signs (eg, cyanosis, peripheral edema) <BR> ❑ Failure of an exacerbation to respond to initial medical management <BR> ❑ Presence of serious comorbidities (eg, heart failure or newly occurring arrhythmias) <BR> ❑ Frequent exacerbations (≥2 events per year) <BR> ❑ Older age (>65 years) <BR> ❑ Insufficient home support
----
'''4. Assessment of Severity of Exacerbation''' <BR> ❑ Chest radiograph (exclude alternative diagnoses) <BR> ❑ ECG (identify coexisting cardiac problems) <BR> ❑ Whole-blood count (identify polycythemia, anemia, or leukocytosis) <BR> ❑ Electrolytes and glucose (identify electrolyte disturbances or hyperglycemia) <BR> ❑ Sputum purulence (if ⊕ → give empiric antibiotics)</div>}}
{{Family tree/end}}


==Management==
==Management==
<!--
{{Family tree/start}}
{{Family tree/start}}
{{Family tree | | | | A01 | | | |A01= '''COPD Exacerbation'''<br>↑[[cough]], ↑[[dyspnea]], ↑[[sputum]], <br> ↑[[wheezing]], [[fever]] or chest tightness}}
{{Family tree | | | | A01 | | | |A01= '''COPD Exacerbation'''<br>↑[[cough]], ↑[[dyspnea]], ↑[[sputum]], <br> ↑[[wheezing]], [[fever]] or chest tightness}}
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{{Family tree | | | | C01 |~| C02 | |C01='''Assessment''' :<br>1-O2 sat+ ABG <br>2-[[CXR]] <br>3-[[EKG]] <br>4-[[CBC]]
{{Family tree | | | | C01 |~| C02 | |C01='''Assessment''' :<br>1-O2 sat+ ABG <br>2-[[CXR]] <br>3-[[EKG]] <br>4-[[CBC]]
<br>
<br>
'''Management:''' <br>1-Inhaled bronchodilators <br>2-Systemic corticosteroids <br>3-Empirical antibiotics <br>4-O2 (target Sat >90%)|C02='''Corticosteroids(Solumedrol)'''<br>Methylprednisolone 125 mg×1 dose <br> followed with 60-80 mg Q8-12based on severity <br> IV Solumedrol to PO Prednisone taper 4--60 mg Q 8-12<br> 2-5 days taper depending on severity<br> '''Antibiotics'''<br>'''Group A'''*<br>Doxycycline Cap '''Vibramycin''' PO 100 mg Q12H<br>(if unable to tolerate choose Cefpodoxime Tab '''Vantin''' PO 200 mg Q12H)<br>'''Group B'''*<br>Ceftriaxone Inj '''Rocephin''' 1GM D5W50 ml Q24H 200 ml/Hr<br>(If Beta-Lactam allergy choose Levofloxacin Tab '''Levaquin''' PO 500 mg daily )<br> '''Group C'''*<br>Ciprofloxacin Tab '''Cipro'''PO 250 Daily<br>or Ciprofloxacin Inj Cipro 400 mg premixed at 400 mg /200 ml Q12H 200 ml/Hr.  
'''Management:''' <br>1-Inhaled bronchodilators <br>2-Systemic corticosteroids <br>3-Empirical antibiotics <br>4-O2 (target Sat >90%)| C02='''Corticosteroids(Solumedrol)'''<br>Methylprednisolone 125 mg×1 dose <br> followed with 60-80 mg Q8-12based on severity <br> IV Solumedrol to PO Prednisone taper 4--60 mg Q 8-12<br> 2-5 days taper depending on severity<br> '''Antibiotics'''<br>'''Group A'''*<br>Doxycycline Cap '''Vibramycin''' PO 100 mg Q12H<br>(if unable to tolerate choose Cefpodoxime Tab '''Vantin''' PO 200 mg Q12H)<br>'''Group B'''*<br>Ceftriaxone Inj '''Rocephin''' 1GM D5W50 ml Q24H 200 ml/Hr<br>(If Beta-Lactam allergy choose Levofloxacin Tab '''Levaquin''' PO 500 mg daily )<br> '''Group C'''*<br>Ciprofloxacin Tab '''Cipro'''PO 250 Daily <br>or Ciprofloxacin Inj Cipro 400 mg premixed at 400 mg /200 ml Q12H 200 ml/Hr.  
}}
}}
{{Family tree | | | | |!| | | | |}}
{{Family tree | | | | |!| | | | |}}
{{Family tree | | | | D01 | | | |D01=Respiratory acidosis? OR <br> PH≤35? OR<br> PaCo2≥45? OR<br> Severe signs of dyspnea? OR <br>Accessory muscles use,<br>paradoxical motion of abdomen,<br> retraction of intercostal space}}
{{Family tree | | | | D01 | | | |D01=Respiratory acidosis? OR <br> PH≤35? OR<br> PaCo2≥45? OR<br> Severe signs of dyspnea? OR <br>Accessory muscles use, <br>paradoxical motion of abdomen,<br> retraction of intercostal space}}
{{Family tree | | |,|-|^|-|.| | }}
{{Family tree | | |,|-|^|-|.| | }}
{{Family tree | E01 | | | E02 |E01=No | E02= Yes}}
{{Family tree | E01 | | | E02 |E01=No | E02= Yes}}
{{Family tree | |!| | | | |!| |}}
{{Family tree | |!| | | | |!| |}}
{{Family tree | F01 | | | F02|F01=Continue the same management |F02='''ICU Admission''' }}
{{Family tree | F01 | | | F02|F01=Continue the same management |F02='''ICU Admission''' <br>'''NIV''' }}
{{family tree | | | | | | |!| | | | | | |}}
{{Family tree | | | | | | |!| |}}
{{family tree | | | | | | Z01 | | | | | |Z01=Non-invasive ventilation}}
{{Family tree | | | | | | |!| | |}}
{{Family tree | | | | | | G01 |G01= Unable to tolerate NIV?<br> Severe hemodynamic instability?<br>Resp/cardiac arrest ?  }}
{{Family tree | | | | | | G01 |G01= Unable to tolerate NIV?<br> Severe hemodynamic instability?<br>Resp/cardiac arrest ?  }}
{{Family tree | | | | | | |!| | |}}
{{Family tree | | | | | | |!| | |}}
{{Family tree | | | | | | H01 | |H01=Invasive mechanical ventilation}}
{{Family tree | | | | | | H01 | |H01=Invasive mechanical ventilation}}
{{Family tree/end}}
{{Family tree/end}}
-->
 
 
'''*Group A''':mild exacerbation, no risk factors, 2>symptoms present
'''Group B''':Mod Exacerbation w/risk factors for poor outcomes:comorbid disease, severe COPD, Frequent exacerbation>3, Antimicrobial use within the last 3 months
'''Group C''':Severe exacerbation w/risk factors for P.aeruginosa infection.


==Do's==
==Do's==
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*Consider subcutaneous heparin or low molecular weight heparin.
*Consider subcutaneous heparin or low molecular weight heparin.
*Treat associated conditions if exist(e.g., heart failure,arrhythmias).
*Treat associated conditions if exist(e.g., heart failure,arrhythmias).
==Don'ts==
* Spirometry is '''not''' recommended during an exacerbation because it can be difficult to perform and measurements are not accurate enough.


==References==
==References==
{{Reflist|2}}
{{reflist|2}}
 
[[Category:Resident survival guide]]

Latest revision as of 00:59, 17 December 2013

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

Definition

COPD exacerbation commonly caused by infections, should be recognized when any of the following symptoms is noticed in a chronic COPD patient:worsening cough, increasing dyspnea, increasing in sputum production more than the baseline for chronic COPD patients.[1]

Causes

Life Threatening Causes

Include conditions which may result death or permanent disability within 24 hours if left untreated, and some of them may mimic and/or aggravate exacerbations:

Common Causes

  • Respiratory tract infections 50%(bacterial or viral).
  • Exposure to pollutants.
  • Unknown (⅓ of cases ).

Differential Diagnosis

Management

 
 
 
COPD Exacerbation
cough, ↑dyspnea, ↑sputum,
wheezing, fever or chest tightness
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Admission
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Assessment :
1-O2 sat+ ABG
2-CXR
3-EKG
4-CBC


Management:
1-Inhaled bronchodilators
2-Systemic corticosteroids
3-Empirical antibiotics
4-O2 (target Sat >90%)
 
Corticosteroids(Solumedrol)
Methylprednisolone 125 mg×1 dose
followed with 60-80 mg Q8-12based on severity
IV Solumedrol to PO Prednisone taper 4--60 mg Q 8-12
2-5 days taper depending on severity
Antibiotics
Group A*
Doxycycline Cap Vibramycin PO 100 mg Q12H
(if unable to tolerate choose Cefpodoxime Tab Vantin PO 200 mg Q12H)
Group B*
Ceftriaxone Inj Rocephin 1GM D5W50 ml Q24H 200 ml/Hr
(If Beta-Lactam allergy choose Levofloxacin Tab Levaquin PO 500 mg daily )
Group C*
Ciprofloxacin Tab CiproPO 250 Daily
or Ciprofloxacin Inj Cipro 400 mg premixed at 400 mg /200 ml Q12H 200 ml/Hr.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Respiratory acidosis? OR
PH≤35? OR
PaCo2≥45? OR
Severe signs of dyspnea? OR
Accessory muscles use,
paradoxical motion of abdomen,
retraction of intercostal space
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
No
 
 
Yes
 
 
 
 
 
 
 
 
 
 
Continue the same management
 
 
ICU Admission
NIV
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unable to tolerate NIV?
Severe hemodynamic instability?
Resp/cardiac arrest ?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Invasive mechanical ventilation
 


*Group A:mild exacerbation, no risk factors, 2>symptoms present Group B:Mod Exacerbation w/risk factors for poor outcomes:comorbid disease, severe COPD, Frequent exacerbation>3, Antimicrobial use within the last 3 months Group C:Severe exacerbation w/risk factors for P.aeruginosa infection.

Do's

  • Monitor fluid balance,nutrition and patient condition closely.
  • Consider subcutaneous heparin or low molecular weight heparin.
  • Treat associated conditions if exist(e.g., heart failure,arrhythmias).

References

  1. Rabe KF, Hurd S, Anzueto A, Barnes PJ, Buist SA, Calverley P; et al. (2007). "Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summary". Am J Respir Crit Care Med. 176 (6): 532–55. doi:10.1164/rccm.200703-456SO. PMID 17507545.