Cardiogenic Shock Diagnosis, Treatment and Guidelines Powerpoint Presentation

Cardiogenic Shock Diagnosis, Treatment and Guidelines

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Slide 1 :

Cardiogenic ShockDiagnosis, Treatment and Guidelines Mladen I. Vidovich, MD April 5, 2007

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H & P 60 yo m >24 h of substernal chest pain Associated with mild dyspnea Continued to watch TV The following day – came to NMH ED

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PMH CVA – 10 yrs ago Syncope, hospitalized ’04, refused w/u “psychiatric disorder, NOS Cataracts NKDA TOB – 2-3 ppd x many FH – unable to obtain

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PE Speaks in full sentences, initially refusing cath/PCI Cold, mottled, clammy skin HR 40-50, RR 20-30, BP 80/50, AF Neck – no overt JVD Lungs – B crackles 1/3 CV – RRR, no m Abdomen – obese benign No edema

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ECG ?

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CATH

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CATH During catheterization patient’s breathing became very laborious along with profound acidemia (6.98/44/71) Urgently intubated Asystole/3rd degree AVB/hemodynamically stable VT TPM PA catheter– PCWP 30, PAP 60 IABP

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Cardiogenic Shock

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Classic Criteria for Diagnosis of Cardiogenic Shock Systemic Hypotension systolic arterial pressure < 80 mmHg Persistent Hypotension at least 30 minutes Reduced Systolic Cardiac Function Cardiac index < 1.8 x m²/min Tissue Hypoperfusion Oliguria, cold extremities, confusion Increased Left Ventricular Filling Pulmonary capillary wedge pressure > 18 mmHg

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Ventricular Septal Rupture Management Echo IABP Inotropic Support Surgical Timing is controversial, but usually < 48°

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Free Wall Rupture Occurs during first week after MI Classic Patient: Elderly, Female, Hypertensive Early thrombolysis reduces incidence but Late increases risk Treat with pericardiocentesis and early surgical repair

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Acute MR Management Echo for Differential Diagnosis: Free-wall rupture VSD Infarct Extension PA Catheter Afterload Reduction IABP Inotropic Therapy Early Surgical Intervention

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SHOCK TrialPrimary and Secondary Endpoints Primary Endpoint Secondary Endpoint Mortality (%) 46.7% 56.0% 50.3% 63.1% P=.11 P= .027 Hochman et al, NEJM 1999; 341:625.

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Antman et al. JACC 2004; 44: 671 P=0.04 Cardiogenic Shock Outcome

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Hochman et al, NEJM 1999; 341:625.

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Hochman et al, NEJM 1999; 341:625.

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SHOCK Trial: Age < 75 30 Day Mortality 41.4% 56.8% % P < .01 6 Month Mortality 44.9% 65.0% Hochman et al, NEJM 1999; 341:625. Immediate Revascularization Strategy Medical Stabilization as an Initial Strategy P < 0.002

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SHOCK Trial: Age > 75 30 Day Mortality 75.0% 53.1% % P < .01 6 Month Mortality 79.2% 56.3% Hochman et al, NEJM 1999; 341:625. Immediate Revascularization Strategy Medical Stabilization as an Initial Strategy P < 0.003

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30-Day Mortality According to Patient Subgroup Hochman, J. S. et al. N Engl J Med 1999;341:625-634

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SHOCK Registry: Impact of Thrombolytics and IABP In Hospital Mortality 47% 52% % P<0.0001 63% 77% Thrombolytics + IABP No Thrombolytics + IABP Thrombolytics + No IABP Neither Hochman et al, NEJM 1999; 341:625.

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IABP

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Contraindications to IABP Significant aortic regurgitation Abdominal aortic aneurysm Aortic dissection Uncontrolled septicemia Uncontrolled bleeding diathesis Severe bilateral peripheral vascular disease uncorrectable by peripheral angioplasty or cross-femoral surgery Bilateral femoral-popliteal bypass grafts for severe peripheral vascular disease Grossman’s 2000

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RV Infarction Management Cardiogenic Shock secondary to RV Infarct has better prognosis than LV Pump Failure IVF Administration IABP Dobutamine Maintain A-V Synchrony Mortality with Successful Reperfusion = 2% vs. Unsuccessful = 58%

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Hochman Circ 2003: 107:298 ACC/AHA Guidelines 2004

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ACC/AHA Guidelines for Cardiogenic Shock Class I IABP is recommended for STEMI patients when cardiogenic shock is not quickly reversed with pharmacological therapy. The IABP is a stabilizing measure for angiography and prompt revascularization. Intra-arterial monitoring is recommended for the management of STEMI patients with cardiogenic shock.

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ACC/AHA Guidelines for Cardiogenic Shock Early revascularization, either PCI or CABG, is recommended for patients < 75 years old with ST elevation or new LBBB who develop shock unless further support is futile due to patient’s wishes or unsuitability for further invasive care. Fibrinolytic therapy should be administered to STEMI patients with cardiogenic shock who are unsuitable for further invasive care and do not have contraindications for fibrinolysis. Echocardiography should be used to evaluate mechanical complications unless assessed by invasively Class I

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ACC/AHA Guidelines for Cardiogenic Shock Class IIa Pulmonary artery catheter monitoring can be useful for the management of STEMI patients with cardiogenic shock. 2. Early revascularization, either PCI or CABG, is reasonable for selected patients > 75 years with ST elevation or new LBBB who develop shock < 36 hours of MI and who are suitable for revascularization that is performed < 18 hours of shock. Patients with good prior functional status who agree to invasive care may be selected for such an invasive strategy.

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IABP is recommended for STEMI patients when cardiogenic shock is not quickly reversed with pharmaco more IABP is recommended for STEMI patients when cardiogenic shock is not quickly reversed with pharmacological therapy. The IABP is a stabilizing measure for ... less