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Rutgers University

Deanne A. Blach

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shock pathophysiology medical management cardiovascular

Summary

This document details the pathophysiology of different types of shock, including hypovolemic and cardiogenic shock. It covers the stages of shock, compensatory mechanisms, and collaborative interventions. The document also emphasizes the importance of maintaining perfusion and saving the lives of patients in shock.

Full Transcript

^Epi i nc OFTn»ESOF£MOC ©2016 DEANNEA. BLACH, MSN, RN ^ Hvpovolemic -> loss of intravascular volume. Cardioeenic -> cardiac pump failure. Distributive -> maldistribution of circulating blood volume. Classified as: a Septic-> microorganisms entering body. o Anaphvlactic -> severe antibody- Hypovolein...

^Epi i nc OFTn»ESOF£MOC ©2016 DEANNEA. BLACH, MSN, RN ^ Hvpovolemic -> loss of intravascular volume. Cardioeenic -> cardiac pump failure. Distributive -> maldistribution of circulating blood volume. Classified as: a Septic-> microorganisms entering body. o Anaphvlactic -> severe antibody- Hypovolein 1c Cardio loss of sympathetic tone. ^^ PA7HOPHYSIOLOGY- STAGESOFSt ' Administerfluids (crystalloids, colloids) for ^ A dynamic physiologic phenomenon results in Initialstage:CO ^, tissue perfusionthreatened. Compensatory stage: Almost immediately, body's homeostatic mechanisms attempt to maintain CO, BP, & tissue perfusion. Mechanisms are mediated by SNS. - Neural response: 1^ HR & contractility, vasoconstriction, & shunting of blood to vital preload from intravascular volume depletion.. Measure preload responsiveness with respiratory or positional variation in pulse pressure, systolic pressure, & SV. Ensure sufficient H/H levels. Blood administration Compensatory mechanisms begin to fail if Hgb critically ^, but restrictive transfusion practice 4^ mortality from transfusion-related ^ ^ Cardiac Output acute lung injury.. Sodium bicarb not recommended in treatment of shock-related lactic acidosis.. Implement individualized enteral nutritional support therapy within 24-48 hrs.. ^ Tissue Perfusion ^ Acute Circulatory Failure organs. - Hormonal response: Activation of reninangiotension-aldosterone-ADH mechanism -> sodium and water retention. Secretion of ^ Risk for MODS & Death. Targetglucose at 140-180mg/dLto ^ infection, ACTH -> production ofglucocorticoids -> ^ blood glucose. Release of epi & norepi -> renal failure, sepsis, & death. Provide comfort and emotional support. Institute evidence-based practice protocols to prevent complications. Assess response to therapy. Death vasoconstriction. Progressive staee: -> 4/ tissue perfusion, ->. Occurs Successful lactic acidemia. Vasodilation & T vascular permeability -> ^ intravascular volume, tissue edema, & further \1/ tissue perfusion -> SIRS -> Prevent and maintain surveillance for complications. PATIENT irreversible cell damage & cellular death -> cells OUTCOMES unable to use oxygen. Every system in the body is affected. Refractory stape: Shock unresponsive to therapy & irreversible. As the individual organ systems Perfusion SAVINGTHE LIFEOFTHE PATIENTIN SHOCK die, MODSoccurs -^ patient death. DEMONSTRATEADEQUATE TISSUEPERFUSION: - Hemodynamic values within normal (CO, DlAC »IS Indicators of systemic perfusion and tion Serum lactate, arterial base deficit, serum bicarb, & central or mixed venous 02saturation levels. Inadequatecellular oxygenation with anaerobic metabolism & /[~ metabolic lactate production /I^serum lactate level. BP, HR, CVP, PAP, PCWP) - Electrolytes and H/H within normal range - Maintain 02 Sat of 90% or greater Mental clarity, skin warm/dry Urine output > 60 mL/hr RR within normal, clear breath sounds I I I.... Identify underlying cause & treat accordingly. Ensure adequate organ & extremity perfusion. Identify and correct cause of lactic acidosis. Support oxygen delivery.

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