List late shock signs?
Loss of 30% to 40% total blood volume / Hypotension / Alerted Level of Consciousness
Signs of neurogenic shock are…
Decrease in BP / Normal heart rate to bradycardia / Skin is typically warm, dry, and pink / Possible paralysis and sensory deficit / Priapism / Flat neck veins / Lack of chest wall movement /
Signs of absolute hypovolemic (low-volume) shock are…
Tachycardia / Pallor / Flat neck veins
Causes of absolute hypovolemic signs are…
Hemorrhage / Major fluid loss / Diarrhea & Vomiting / Third spacing due to burns / Peritonitis / #1 cause of preventable death from trauma
Absolute Hypovolemic Pathophysiology
Major vessels signal adrenal glands and nerves of the sympathetic nervous system to secrete catecholamines causing vasoconstrictions to maintain perfusion to the brain and heart.
Pathophysiology of Neurogenic Shock
No Catecholamine release
List early shock signs?
Loss of 15% to 20% blood volume / Moderate tachycardia / Pallor / Narrowed pulse pressure / Thirst / Weakness / Delayed capillary refill
What are the causes of mechanical (obstructive) shock?
It is a "pump" problem caused by myocardial contusion, MI, pericardial tamponade, tension pneumothorax, and/or massive pulmonary embolism.
What is typically associated with, post-traumatic hemorrhage, EARLY shock?
Narrowed pulse pressure
What is the most typical signs of early, neurogenic shock?
Decrease pulse, warm and dry skin
Cardiogenic shock and myocardial infarction
Most often associated with large anterior infarction and/or loss of 40% or more of the left ventricle.