40B - Lecture - Chapter #20 Flashcards
3 Layers of the Pericardium
- Fibrous Pericardium
- Parietal Layer
- Visceral Layer
Pericarditis
Inflammation of Pericardium
Acute Pericarditis
Pericardial fluid decreases
*Causes pericardial friction
Chronic Pericarditis
Pericardial fluid increases
*Fibrous layer does not stretch
Myocarditis
Inflammation of cardiac muscle
Endocarditis
Inflammation of lining inside of heart chambers
Stenosis
Narrow opening of valve, does not open completely
Blood gets backed up
Mitral Stenosis
Bicuspid Valve issue
*Treated with anti-biotics
Pulmonary Edema
Water in lungs, becomes congestive heart failure
Mitral Valve Insufficiency
Valve does not completely close
Mitral Valve prolapse
Valve prolapses into left atrium
*Cannot be treated with anti-biotics
Myocardial Ischemia
Partial blockage of coronary artery, decrease blood flow
Hypoxia
Low level of Oxygen to tissue
Myocardial infarction
Complete blockage of blood flow in coronary arteries
TPA
Dissolves fibrin
Coronary Angio Plasty
Balloon or drill
Coronary by pass
Goes around obstruction. Makes a ‘new path’ for coronary artery with biological artery
Cardiac Output
Volume of blood that is ejected from LEFT or RIGHT ventricle into AORTA or PULMONARY TRUNK per minute
CO = ?
Stroke Volume (mL/beat) x Heart Rate (beats/min) = mL/min
Stroke Volume
Volume of blood ejected by LEFT or RIGHT ventricles during each contraction or beat
Cardiac Output (AT REST)
5 L/min
Cardiac Output (MILD EXERCISE)
10 L/min
Increases x2
Cardiac Output (INTENSE EXERCISE)
20L/min
Increase x4
Max heart rate
220 minus age
Ventricular Systole
S1
AV valve closes
“lubb” sound
Ventricular Diastole
S2
Semilunar valve closes
“dubb” sound
Fibrillation
Rapid, chaotic, unsynchronized, heart contraction
What can affect conduction system?
Ventricular tachycardia which turns into V-Fib
Defibrillator (AED)
Automated External Defibrillator
Restarts conduction system
What is shockable rhythm?
Still have current activity in heart
Cardiac Arrest
No effective heart beat, heart completely stopped