Understanding Shock: Types and Mechanisms
Introduction
- Speaker: Evan, The Paramedic Coach
- Topic: Types of Shock
- Goal: Understand each type of shock in detail
Types of Shock
-
Cardiogenic Shock
- Cause: Heart failure (e.g., CHF - Congestive Heart Failure)
- Mechanism: Heart fails as a pump
- Example: Heart muscle dies due to blockage (MI - Myocardial Infarction)
- Key Point: It's the heart's fault
-
Obstructive Shock
- Definition: Blood flow is obstructed
- Examples:
- Pulmonary Embolism: Obstruction by a plaque in the pulmonary artery
- Tension Pneumothorax: Pressure builds, obstructing heart blood flow
- Cardiac Tamponade: Pressure around the heart obstructs blood flow
- Key Point: External force obstructing blood flow, not heart's fault
-
Distributive Shock
- Subtypes: Three subtypes
- Sepsis: Bacteria in the blood (lungs, UTI)
- Neurogenic: Related to brain and spinal cord
- Anaphylaxis: Severe allergic reaction affecting multiple body systems
- Mechanism: Abnormal vasodilation, lack of natural epinephrine/norepinephrine response
- Clinical Note: Patients may have low blood pressure (e.g., 80/40)
-
Hypovolemic Shock
- Pathways:
- Trauma: Major bleeding (e.g., shooting, stabbing, internal bleeding)
- Dehydration: Severe loss of body fluids
- Note: Important for pediatric patients
Additional Resources
- Video Study Course: Comprehensive EMT/Paramedic preparation
- Content: Exam prep, drug cards, on-the-job tips
- Offer: Lifetime access available
Conclusion
- Encouragement: Pursue the program for effective learning
- Testimonials: Success stories from past students
These notes summarize the key points from the lecture on shock, detailing each type, its causes, and mechanisms. The information is organized to aid understanding and retention for medical studies.