Tag Archives | shock

Types Of Shock

Types of Shock: All types of shock occur due to an underlying lack of tissue perfusion. (Fluid loss, significant vasodilation, pump failure): Four causes of shock Hypovolemic shock – from blood loss or excessive fluid loss Cardiogenic shock – the heart is unable to circulate enough blood volume to maintain adequate tissue perfusion. This can […]

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Stages Of Shock

Shock: body’s response to poor perfusion Barorecepters: sensory nerve endings that sense changes in BP from vaso dilation/constriction Lower BP in response to increased arterial pressure Inhibit medulla Excite vagal center Decrease force of cardiac contraction Increase BP in response to decreased arterial pressure Inhibit vagal center Activate sympathetic nervous system> norepinephrine and epinephrine Chemoreceptors: […]

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Trauma | Management of Bleeding Wounds and Shock

Management of Bleeding Wounds and Shock BSI Direct Pressure Elevate if extremity Additional dressings Pressure dressing and bandage Pressure to appropriate arterial pressure point Elevate patient’s legs Apply high flow O2 Cover patient with blanket Initiate immediate transport Reassess vital signs Internal Bleeding: usually chest, abdomen. Pelvis or retroperitoneum Signs and Symptoms: Coughing up red […]

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Trauma | Blood

Blood: 3 functions: Transportation: delivers O2 and nutrients, carries away wastes Plasma 55% of blood, fluid with proteins Erythrocytes: Red Blood Cells, most numerous of all blood cells, contains hemoglobin, a proteins that binds to O2 Platelets – formed elements that make clots Erythrocytes and Platelets makeup 45% of total blood volume Regulation: buffers regulate […]

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Trauma | Cardiovascular System

Cardiovascular system Stroke volume: amount of blood pumped into the cardiovascular system in one heart contraction. Amount is usually around 70mL. Depends on: Contractility: the extent and velocity of muscle fiber shortening Preload: the passive stretching force on the ventricular muscle at the end of diastole. More blood returning increases the preload, less blood returning […]

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Trauma | Hemorrhage and Shock

Hemorrhage and Shock Perfusion: The process by which oxygenated blood is delivered to the body tissues and wastes are removed. Diffusion: movement of particles from an area of greater concentration to an area of lesser concentration. Fick Principle: the quantity of O2 delivered to a body organ is equal to the amount of O2 consumed […]

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