Shock Flashcards
Hypoperfusion
Shock;
A state of collapse and failure of the cardiovascular system.
Homeostasis
A balance of all systems of the body
Perfusion
The circulation of blood within an organ or tissue in adequate amounts to meet the cells current needs for oxygen, nutrients, and waste removal.
Circulatory system
Arteries Arterioles Capillaries Venules Veins
Two circuits in the body
Systemic circulation in the body
Pulmonary circulation in the lungs
Cardiovascular system
The pump (heart)
Container (vessels)
Contents (blood)
Blood pressure
A rough measure of perfusion
Systolic pressure
Peak arterial pressure;
Pressure generated every time the heart contracts
Diastolic pressure
Pressure maintained within the arteries while the heart rests between heartbeats
Pulse pressure
Difference between systolic and diastolic pressure (systolic - diastolic)
Pulse pressure less than 25 mm Hg may been seen in patients with shock
Autonomic nervous system
Regulates involuntary functions such as sweating and digestion.
Control capillary sphincters
Capillary sphincters
Regulates blood flow through the capillary beds.
Also responds to other stimuli such as cold, heat, the need for oxygen, and the need for waste removal.
What causes pump failure ?
Cardiogenic shock
Obstructive shock
Tension pneumothorax
Cardiac tamponade
Pulmonary embolism
Distributive shock
Septic shock
Neurogenic shock
Anaphylactic shock
Psychogenic shock
Result of poor vessel function
Hypovolemic Shock
Hemorrhagic shock
Non-hemorrhagic shock
Cause of low fluid volume
