Patho 2 Flashcards
Blood Pressure Equation
Peripheral Vascular Resistance (Afterload) x Cardiac Output = Blood Pressure
Cardiac Output Equation
Heart Rate x Stroke Volume = Cardiac Output
HR x SV = CO
Alpha 1 - What does it do?
- Vasoconstriction
- Causes pale skin
Beta 1
- Increase Heart Rate
- Stronger contractions
Beta 2
Bronchodilation
EPINEPHRINE (What properties does it produce?)
Alpha and Beta
NOREPINEPHRINE (What properties does it produce?)
Majority Alpha 1
and
Minimal Beta 2
DOPAMINE (What properties does it produce?)
In low doses, Beta
In high doses, Alpha
3 Major Classifications of Shock
- Hypovolemic
- Distribute/Vasogenic/Low Resistance
- Cardiogenic
Hypovolemic Shock
What’s wrong?
What could be causing it?
A fluid problem.
Hemorrhage, dehydration (vomiting, diarrhea), 3rd Spacing (burns, ascites, peritonitis).
Distributive/Low Resistance
What’s wrong?
What could be causing it?
Vessels are so big there’s no resistance.
Neurogenic (spinal cord injury, vasovagal)
Anaphylactix
Sepsis
Cardiogenic Shock
What’s wrong with the body?
There’s something wrong with the heart. Ex: MI, CHF, etc.
What are the 3 stages of shock?
Compensated
Uncompensated
Irreversible
COMPENSATED How does the body respond? What does the body release? Where does the blood go? Signs & Symptoms?
Body responds by vasoconstricting and raising the HR and SV.
Released Epinephrine and Norepinephrine.
Blood goes towards core tissues.
S/S: Mild tachycardia, confusion/lethargy, delayed capillary refill, cool skin, normal/slightly raised BP.
What blood pressure do you have at the RADIAL?
80 Systolic
