SHOCK
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MS ABOUT SHOCK
& SEPSIS
IN DETAIL
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, SHOCK
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FLOWCHART DEFINITION
STAGES Shock is an emergency condition characterised by
hypoxia and inadequate perfusion of vital organs,
HYPOVOLEMIC which results in metabolic disturbances and eventually
leads to irreversible organ damage.
CARDIOGENIC
OBSTRUCTIVE
DISTRIBUTIVE SHOCK INDEX
Shock index = pulse rate/systolic blood pressure.
SEPTIC
A shock index > 0.8 usually indicates shock, and the
ANAPHYLACTIC higher the number = the worse the shock, but a normal
shock index value doesn’t exclude shock.
NEUROGENIC Normal shock index - 0.5 to 0.7
DIFFERENTIAL
TEST YOURSELF Use the interactive menu for easy navigation MS
, SHOCK SIMPLIFIED MS
THERE ARE 4 TYPES OF SHOCK: HYPOVOLEMIC, CARDIOGENIC, OBSTRUCTIVE & DISTRIBUTIVE
If the main problem is due to loss of fluid from the intravascular space then it's known as
hypovolemic shock. Hypovolemic shock can be divided into hemorrhagic or non-
hemorrhagic shock
If the main problem is reduced cardiac output as a result of inefficient pumping of the
heart then it's either cardiogenic or obstructive shock.
WHAT'S THE DIFFERENCE?
Cardiogenic shock is due to abnormal myocardial function.
Obstructive shock is due to an anatomical obstruction of the great vessels of the heart
or the heart itself.
If the main problem is decreased systemic vascular resistance due to vasodilation then it's
known as distributive shock. Distributive shock is sub-divided into septic, anaphylactic or
neurogenic shock depending on the cause. Septic shock is a result of an abnormal
inflammatory response, neurogenic shock is caused by a loss of sympathetic tone of the vagal
nerve and anaphylactic shock is caused by an allergic reaction (anaphalyxasis)
, SHOCK SIMPLIFIED FLOWCHART
CAUSED BY:
INEFFECTIVE DUE TO ABNORMAL MYOCARDIAL INFARCTION
PUMPING OF MYOCARDIAL FUNCTION ARRHYTHMIA CARDIOGENIC
THE HEART HEART FAILURE SHOCK
VENTRICULAR SEPTAL DEFECT
DUE TO ANATOMICAL CAUSED BY:
OBSTRUCTION OF THE PNEUMOTHORAX
GREAT VESSELS OF THE PERICARDITIS OBSTRUCTIVE
MAIN PROBLEM
HEART OR HEART ITSELF. CARDIAC TAMPONADE SHOCK
PULMONARY EMBOLISM
CAUSED BY HEAMORRHAGIC INCIDENCES:
GI BLEEDING HYPOVOLEMIC
LOSS OF FLUID FROM BLUNT/PENETRATING TRAUMA
SHOCK
INTRAVASCULAR SPACE POST-PARTUM HEAMORRHAGE
RUPTURED ANEURYSM OR HEMATOMA
(HEAMORRHAGIC)
ARTERIOVENOUS FISTULA
CAUSED BY:
GI LOSS (E.G., DIARRHEA, VOMITING)
INCREASED INSENSIBLE FLUID LOSS (E.G., BURNS)
HYPOVOLEMIC SHOCK
THIRD SPACE FLUID LOSS (E.G., BOWEL OBSTRUCTION,
PANCREATITIS) (NON-HEAMORRHAGIC)
RENAL FLUID LOSS (E.G., ADRENAL INSUFFICIENCY, DRUG-
INDUCED DIURESIS)
ABNORMAL INFLAMMATORY REPSONSE DUE
TO VARIOUS INFECTIONS e.g pneumonia SEPTIC SHOCK
DECREASED SYSTEMIC
DISTRIBUTIVE
VASCULAR RESISTANCE ALLERGIC REACTION (ANAPHYLAXIS)
SHOCK
ANAPHLACTIC
DUE TO VASODILATION E.G PEANUT ALLERGY, DUST ALLERGY
SHOCK
ALLERGIC REACTION CAUSED BY:
(ANAPHYLAXIS) Spinal cord injury
NEUROGENIC
*IN ALL TYPES OF SHOCK, E.G PEANUT ALLERGY, Autonomic nervous
system toxins. SHOCK
THERE IS HYPOTENSION DUST ALLERGY
Guillain-Barré syndrome.
WE ARE GOING
TO LEARN
MS ABOUT SHOCK
& SEPSIS
IN DETAIL
MEDIC SQUAD©
USE ME AS A HOME BUTTON
HOME PAGE BELOW
, SHOCK
MENU
FLOWCHART DEFINITION
STAGES Shock is an emergency condition characterised by
hypoxia and inadequate perfusion of vital organs,
HYPOVOLEMIC which results in metabolic disturbances and eventually
leads to irreversible organ damage.
CARDIOGENIC
OBSTRUCTIVE
DISTRIBUTIVE SHOCK INDEX
Shock index = pulse rate/systolic blood pressure.
SEPTIC
A shock index > 0.8 usually indicates shock, and the
ANAPHYLACTIC higher the number = the worse the shock, but a normal
shock index value doesn’t exclude shock.
NEUROGENIC Normal shock index - 0.5 to 0.7
DIFFERENTIAL
TEST YOURSELF Use the interactive menu for easy navigation MS
, SHOCK SIMPLIFIED MS
THERE ARE 4 TYPES OF SHOCK: HYPOVOLEMIC, CARDIOGENIC, OBSTRUCTIVE & DISTRIBUTIVE
If the main problem is due to loss of fluid from the intravascular space then it's known as
hypovolemic shock. Hypovolemic shock can be divided into hemorrhagic or non-
hemorrhagic shock
If the main problem is reduced cardiac output as a result of inefficient pumping of the
heart then it's either cardiogenic or obstructive shock.
WHAT'S THE DIFFERENCE?
Cardiogenic shock is due to abnormal myocardial function.
Obstructive shock is due to an anatomical obstruction of the great vessels of the heart
or the heart itself.
If the main problem is decreased systemic vascular resistance due to vasodilation then it's
known as distributive shock. Distributive shock is sub-divided into septic, anaphylactic or
neurogenic shock depending on the cause. Septic shock is a result of an abnormal
inflammatory response, neurogenic shock is caused by a loss of sympathetic tone of the vagal
nerve and anaphylactic shock is caused by an allergic reaction (anaphalyxasis)
, SHOCK SIMPLIFIED FLOWCHART
CAUSED BY:
INEFFECTIVE DUE TO ABNORMAL MYOCARDIAL INFARCTION
PUMPING OF MYOCARDIAL FUNCTION ARRHYTHMIA CARDIOGENIC
THE HEART HEART FAILURE SHOCK
VENTRICULAR SEPTAL DEFECT
DUE TO ANATOMICAL CAUSED BY:
OBSTRUCTION OF THE PNEUMOTHORAX
GREAT VESSELS OF THE PERICARDITIS OBSTRUCTIVE
MAIN PROBLEM
HEART OR HEART ITSELF. CARDIAC TAMPONADE SHOCK
PULMONARY EMBOLISM
CAUSED BY HEAMORRHAGIC INCIDENCES:
GI BLEEDING HYPOVOLEMIC
LOSS OF FLUID FROM BLUNT/PENETRATING TRAUMA
SHOCK
INTRAVASCULAR SPACE POST-PARTUM HEAMORRHAGE
RUPTURED ANEURYSM OR HEMATOMA
(HEAMORRHAGIC)
ARTERIOVENOUS FISTULA
CAUSED BY:
GI LOSS (E.G., DIARRHEA, VOMITING)
INCREASED INSENSIBLE FLUID LOSS (E.G., BURNS)
HYPOVOLEMIC SHOCK
THIRD SPACE FLUID LOSS (E.G., BOWEL OBSTRUCTION,
PANCREATITIS) (NON-HEAMORRHAGIC)
RENAL FLUID LOSS (E.G., ADRENAL INSUFFICIENCY, DRUG-
INDUCED DIURESIS)
ABNORMAL INFLAMMATORY REPSONSE DUE
TO VARIOUS INFECTIONS e.g pneumonia SEPTIC SHOCK
DECREASED SYSTEMIC
DISTRIBUTIVE
VASCULAR RESISTANCE ALLERGIC REACTION (ANAPHYLAXIS)
SHOCK
ANAPHLACTIC
DUE TO VASODILATION E.G PEANUT ALLERGY, DUST ALLERGY
SHOCK
ALLERGIC REACTION CAUSED BY:
(ANAPHYLAXIS) Spinal cord injury
NEUROGENIC
*IN ALL TYPES OF SHOCK, E.G PEANUT ALLERGY, Autonomic nervous
system toxins. SHOCK
THERE IS HYPOTENSION DUST ALLERGY
Guillain-Barré syndrome.
