Shock and Resuscitation. Chapter 15. Objectives. Discuss etiologies of shock What the common categories of shock are Specific types of shock What the body’s responses are to shock Discuss shock assessment Discuss age considerations
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Shock is inadequate tissue perfusion (hypoperfusion)
Three Etiologies provide a foundation for general emergency care;
If all the vessels dilate at once, the normal amount of blood volume is not enough to fill the system and provide adequate perfusion to the body.
Damage to the heart by disease or injury.
It cannot move blood adequately to support perfusion.
If blood or plasma is lost, the volume in the container is not enough to support the perfusion needs of the body.
Hemorrhagic Hypovolemic Shock
Non-hemorrhagic Hypovolemic shock
The body attempts to compensate for a disturbance and returns perfusion and tissue function to a normal state
Release of Hormones
Management of shock is geared to improving oxygenation of the blood and delivery of oxygen and glucose to the cells
Resuscitation is bringing a patient back from a potential or apparent death
Cardiac arrest occurs when the ventricles are not contracting or when the cardiac output is completely ineffective
Sudden death occurs when the patient dies within one hour of the onset of signs/symptoms
Three phases the patient goes through following cardiac arrest that lead to biological death;
2. Circulatory Phase
Types of Defibrillators
AED will detect rhythms for which no shock is indicated
Scene size-up and Primary Assessment
Patients brought out of ventricular fibrillation through use of AED have a high likelihood to slipping back into that state
Mechanical piston device