shock management erin burrell, acnp-bc surgical icu nurse practitioner
TRANSCRIPT
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Shock Management
Erin Burrell, ACNP-BCSurgical ICU Nurse Practitioner
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Objectives• Understand the definition of the three
different types of shock• Be able to recognize the different types of
shock in patient scenarios• Understand and apply treatment guidelines
for the different types of shock
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What is Shock?• Shock is the “physiologic state characterized
by significant reduction of systemic tissue perfusion, resulting in decreased tissue oxygen delivery.” – Tissue perfusion is dependent on SVR and CO– Imbalance between oxygen delivery and oxygen
consumption which leads to cell death, end organ damage, multi-system organ failure, and death
Gaieski et al. 2009 (Online accessed 22 August 2013) URL: http://lijhs.sandi.net/faculty/rtenenbaum/ap-biology-folder/Links/Shock.utd.pdf
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Three Types of Shock
• Cardiogenic• Hypovolemic• Distributive– Septic– Anaphylactic– Neurogenic
• Combined
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Case Study• Mrs. C is a 61yo F who presents to ED
complaining of fatigue and SOB. She has significant PMHx: DM, obesity, HTN. Husband also states she has become slightly confused.
• Vitals: HR 46, BP 68/32, RR 23, SpO2 95% on RA, Afebrile.
• Labs: WBC 8.1, Hgb 12.1, BUN 12, Creat 1.0, Troponin 3.1, BG 121.
• EKG shows ST elevation in II, III, aVF
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What kind of shock does this patient have?
A. CardiogenicB. HypovolemicC. Distributive
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Cardiogenic Shock• Shock caused as a result of cardiac pump
failure– Results in a decrease in CO– SVR is increased in an effort to compensate to
maintain organ perfusion– Causes:
• Myocardial Infarction• Arrythmias (Atrial fibrillation, ventricular tachycardias,
bradycardias, etc)• Mechanical abnormalities (valvular defects)• Extracardiac abnormalities (PE, pulm HTN, tension pneumothorax)
Medscape Reference. 1994 (Online accessed 22 August 2013) URL: http://emedicine.medscape.com/article/152191-treatment#showall
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What information do you have to suggest that Mrs. C has cardiogenic shock?
A. HypotensionB. Evidence of MIC. Altered Mental
StatusD. All of the aboveE. Both A. and B.
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Treatment of Cardiogenic Shock• Correct hypotension:
– Fluid resuscitation to correct hypovolemia– Inotropic or Vasopressor support:
• Dobutamine• Milrinone• Norepinephrine• Dopamine• Epinephrine
• Oxygenation• If MI – ASA, Heparin, and Revascularization• If arrthymia – correct arrthymia • If extracardiac abnormality – reverse or treat cause
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Case Study• Mr. H is a 18yo M who presents to ED after
suffering a MCC into a tree. He was unhelmeted and has an obvious left femur fx. He was intubated for a GCS of 8 in the field and given 1L NS en route for hypotension.
• Vitals: HR 145, BP 71/38, Intubated with SpO2 100%, Afebrile.
• Labs: WBC 12.3, Hgb 6.7, Plts 72, INR 2.1.• Traumagram shows Grade III liver lac.
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What kind of shock does this patient have?
A. CardiogenicB. HypovolemicC. Distributive
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Hypovolemic Shock• Shock caused by decreased preload due to
intravascular volume loss (1/5 of blood volume)– Results in decreased CO– SVR is typically increased in an effort to
compensate– Causes:• Hemorrhagic – trauma, GI bleed, hemorrhagic
pancreatitis, fractures• Fluid loss induced – Diarrhea, vomiting, burns
Medscape LLC. 2013 (Online access on 22 August 2013) URL: http://emedicine.medscape.com/article/760145-treatment#2
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What information do you have to suggest that Mr. H has hypovolemic shock?
A. Recent traumaB. WBC 12.3C. Hgb 6.7D. All of the aboveE. Both A. and C.
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Treatment of Hypovolemic Shock• Maximize oxygen delivery• Control further blood loss–Tourniquets–Surgical intervention
• Fluid resuscitation–NS fluid boluses–Blood product administration
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Case Study• Mr. S is a 59yo M presents to ED with
worsening abdominal pain and N&V• He is POD#8 s/p ex-lap, SBR with primary
anastamosis for chronic SBO at OSH• Vitals: HR 128, BP 78/45, RR28, SpO2 94% on
4L NC, Fever 103.1• Labs: WBC 20.1, Hgb 9.5, BUN 34, Creat 2.1• CT scan of ABD shows anastamotic leak
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What kind of shock does this patient have?
A. CardiogenicB. HypovolemicC. Distributive
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Distributive Shock• Shock as a result of severely diminished SVR– CO is typically increased in an effort to maintain
perfusion– Subtypes:• Septic – secondary to an overwhelming infection• Anaphylactic – secondary to a life-threatening allergic
reaction• Neurogenic – secondary to a sudden loss of the
autonomic nervous system function Gaieski et al. 2009 (Online accessed 22 August 2013)
URL: http://lijhs.sandi.net/faculty/rtenenbaum/ap-biology-folder/Links/Shock.utd.pdf
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What information do you have to suggest Mr. S has distributive shock?
A. SpO2 94% on 4 L NCB. Anastamotic leak on
CT scanC. WBC 20.1D. All of the aboveE. Both B. and C.
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Treatment of Septic Shock• Resuscitate– 30cc/kg of NS bolus
• Identify Source– Pan cultures– CT scan– Line removal– Foley removal– Surgical exploration
• AntibioticsDellinger, R et al. Surviving Sepsis Campaign: International Guidelines for Management
of Severe Sepsis and Septic Shock:2012, 41: 580-637, 2013.
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Treatment of Anaphylactic Shock• Remove offending agent• Establish an airway and return circulation• Pharmacologic support:– Epinephrine – reverses peripheral vasodilation, dilates
bronchial airways, increases myocardial contractility, and suppresses histamine/ leukotriene release
– Antihistamine (benadryl) – may help counter histamine-mediated vasodilation and bronchoconstriction
– Corticosteroids (hydrocortisone) – may help shorten reaction
– BronchodilatorsSoar, J et al. 2013 (Online Accessed on 22 August 2013) URL:
http://www.resus.org.uk/pages/reaction.pdf
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Treatment of Neurogenic Shock• Establish an airway to maintain adequate
oxygenation and ventilation• Fluid resuscitation for MAP>65mmHg• Inotropic support– Dobutamine– Dopamine
• Atropine for severe bradycardia• High dose methylprednisolone therapy
Emergency Medicine. 2009 (Online Accessed on 22 August 2013) URL: http://emergencymed.wordpress.com/2009/03/11/neurogenic-shock/
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All three types of shock can occur at the same time to have a combined shock picture.
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Case Study• Mrs. D is a 71yo F who presented to ED after a
3 day h/o N&V with inability to tolerate PO intake. She is now POD0 s/p exlap, pancretectomy for necrotizing pancreatitis. She presents to the Surgical ICU postop.
• Vitals: HR 121, BP 82/41, Intubated on 100% FiO2, Fever 102.8
• Labs: WBC 1.1, Hgb 8.4, BUN 61, Creat 2.82, Lactate 3.7
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Case Study cont..• The Surgical ICU team places a MAC with PAC
to obtain further data about the patient’s hemodynamic status.
• PAC numbers: PAP 18/6, CVP 1, PCWP 2, CI 1.7, SVR 615
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What type of shock does this patient have?
A. CardiogenicB. HypovolemicC. DistributiveD. All of the Above
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What information leads you to believe Mrs. D has a component of cardiogenic shock?
A. BP 82/41B. Temp 102.8C. CI 1.7 L/minD. Cr 2.82
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What information demonstrates a component of hypovolemic shock?
A. CVP 1 mmHgB. PCWP 2 mmHgC. SVR 615
dynes/sec/cm-5D. PAP 18/6 mmHgE. Both A. B. and D.
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What information indicates a degree of distributive shock?
A. PCWP 2 mmHgB. SVR 615
dynes/sec/cm-5 C. PAP 18.16 mmHgD. WBC 1.1
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Mrs. S is suffering from distributive septic shock along with cardiogenic and hypovolemic shock.
A. TrueB. False
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Case Study cont..• The Surgical ICU team starts by giving Mrs. S a
2L NS bolus and 1L 5% Albumin bolus• Vitals: HR 114, BP 89/45, Remains intubated
on SIMV/PRVC 60% FiO2, Febrile 101.7• Labs: WBC 3.4, Hgb 7.4, BUN 72, Creat 3.21,
Lactate 2.1• Broad spectrum ABX are started immediately
upon arrival• PAC numbers after the initial resuscitation:– PAP 22/10, CVP 9, PCWP 11, CI 1.5, SVR 682
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Mrs. S. continues to have a combined shock of hypovolemic, distributive, and cardiogenic shock.
A. TrueB. False
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Mrs. S continues to suffer from cardiogenic and distributive septic shock as evidence by the following:
A. CI 1.5 L/minB. SVR 682
dynes/sec/cm-5C. Both A. and B.
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As an intensivist, what treatment should be implemented next?
A. More fluid resuscitationB. Initiate vasopressor
supportC. Initiate inotropic
supportD. No change in current
therapy
E. Both B. and C.
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Case study cont..• After initiating milrinone and levophed
therapy, Mrs. S improves. • Vitals: HR 93, BP 122/61, Intubated on
PS/CPAP 40%, Afebrile. Levophed at 4mcg/min and Milrinone at 0.375mcg/kg/min
• PA numbers: PAP 24/10, CVP 12, PCWP 14, CI 3.6, SVR 1120
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Case study cont..• The Surgical ICU team decides to attempt to
wean vasopressor support first. • Mrs. S is successfully weaned off levophed
support after approximately 12 hours. • Vitals: HR 87, BP 117/58, Intubated on
PS/CPAP 40%, Afebrile. Levophed is off and Milrinone at 0.375mcg/kg/min
• PA numbers: PAP 22/14, CVP 12, PCWP 14, CI 3.4, SVR 1068
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Case Study cont..• After an additional 12 hours, Mrs. S is
successfully weaned off milrinone support as well.
• She is extubated the next day and progressing well.
• On HOD 6, Mrs. S is complaining of a HA and would prefer not to take narcotics.
• Ibuprofen 200mg q6h PRN is added to HA pain.
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Case Study cont..• After approximately 15 min of her first dose of
Ibuprofen, Mrs S starts to complain of difficult breathing, flushing, and airway edema.
• The bedside RN notices a new onset of hives around Mrs. S’s neck and mouth.
• Vitals: HR 147, BP 54/31, SpO2 91% on 100% NRB, Febrile 102.6.
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What kind of shock is Mrs. S exhibiting?
A. CardiogenicB. HypovolemicC. Distributive
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What would you include in your treatment plan?
A. Benadryl 25 mg IVB. ReintubationC. Hydrocortisone 100
mg IVD. Epinephrine 50 mcg
IVE. All of the above
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Case Study cont..• Mrs. S is successfully intubated and
administered treatment for her anaphylaxis. After approximately 12hours, her symptoms have resolved. She is again extubated and progressing well.
• Mrs. S goes on to rehab and eventually home!
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Summary
Survival and outcomes improve with early perfusion, adequate oxygenation, and identification with appropriate treatment of the cause of shock.
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Questions?
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References• Dellinger, R et al. Surviving Sepsis Campaign: International Guidelines for
Management of Severe Sepsis and Septic Shock:2012, 41: 580-637, 2013.• Emergency Medicine. 2009 (Online Accessed on 22 August 2013) URL:
http://emergencymed.wordpress.com/2009/03/11/neurogenic-shock/• Gaieski et al. 2009 (Online accessed 22 August 2013)
URL:http://lijhs.sandi.net/faculty/rtenenbaum/ap-biology-folder/Links/Shock.utd.pdf
• Medscape Reference. 1994 (Online accessed 22 August 2013) URL: http://emedicine.medscape.com/article/152191-treatment#showall
• Medscape LLC. 2013 (Online access on 22 August 2013) URL: http://emedicine.medscape.com/article/760145-treatment#2
• Soar, J et al. 2013 (Online Accessed on 22 August 2013) URL: http://www.resus.org.uk/pages/reaction.pdf