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Published byShayna Poulson Modified over 9 years ago
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Shock
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Important formulas Stroke Volume = End dyastolic volume – End systolic volume Cardiac output = Stroke volume x Heart rate Blood pressure = Cardiac output x Systemic Vascular Resitance
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Define Shock Acute circulatory failure resulting in inadequate or disordered tissue perfusion and insufficient oxygen supply to cells
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Name the 5 types of shock He - Hypovolaemic Called - Cardiogenic Me - Mechanical (obstructive) A - Anaphylactic Sadist - Septic
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Hypovolemic Shock What is hypovolemic shock? Shock caused by an insufficient volume of blood What are the causes of hypovolemic shock? Major trauma (blood loss), Diarrhoea/Vomiting, massive blood loss during surgery, burns
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Hypovolemic Shock What are the signs of hypovolemic shock? Tachycardia, hypotension, thready pulse, oliguria, cold clammy peripheries, Altered GCS
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Cardiogenic Shock What is cardiogenic shock? Failure of the heart to pump effectively What causes cardiogenic shock? Myocardial infarction, valvular disease, myocarditis, endocarditis
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Cardiogenic Shock What are the signs of cardiogenic shock? Pulmonary oedema, increased central venous pressure, murmurs, S3/S4, hypodynamic circulation, oliguria
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Septic Shock What is septic shock? Shock caused by impaired utilisation of oxygen by cells What are the causes of septic shock? Hospital admission, diabetes, hospital admission, immunocompromised.
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Septic Shock What are the signs of septic shock? Toxic look – warm and flush, tachycardia and hypotension
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Anaphylactic Shock What are the causes of Anaphylactic Shock? Anapylaxis, Anaphylactoid What are the signs of anaphylactic shock? Angiooedema, Stridor/Bronchospasm
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Mechanical/Obstructive What is mechanical shock? Obstruction of blood flow outside the heart What are the causes of obstructive shock? Tension pneumothorax, Pulmonary embolism, Pericardial tamponade
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Mechanical/Obstructive What are the signs of mechanical shock? Tachynpnoea, increased CVP, reduced air entry, muffled heart sounds
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