Shared Flashcard Set

Details

Med Surg: Cardio I - PPT 1
Fall Semester - 2010 (Cardiac Anatomy)
12
Medical
Graduate
10/30/2010

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Cards

Term
What is the normal value for EF?
Definition
Normal = 55
Term
Which valves are supported by chordae tendonae?
Definition
Mitral and Tricuspid
Term
What is the formula for CO?
Definition
SV x HR
Term
What instrument can measure the CO?
Definition
Swan-Ganz Catheter in the pulmonary artery
Term
What is preload measured by?
Definition
Left Ventricular End Diastolic Pressure (LVEDP)/Left Ventricular End Diastolic Volume (LVEDV)
Term
What are the four determinants of preload?
Definition
Total Blood Volume
Distribution of blood volume
Atrial contraction
Compliance
Term
Due to La Place's Law what happens to velocity when vessel walls narrow? What happens when they widen?
Definition
Narrow - Velocity Increases
Widen - Velocity Decreases
Term
What do positive ionotropic drugs do to myocardial contractility?
Definition
increase contractility
Term
What do negative ionotropic drugs do to myocardial contractility?
Definition
decrease contractility
Term
How is ejection fraction measured?
Definition
MUGA (Not really used much anymore)
Echo (Widely used)
Cardiac Catheterization
Term
According to Frank-Starling Mechanism, how does the heart compensate when it is stretched?
Definition
Compensates with hypertrophy (Contractility and HR will also increase)
Term
How does the heart compensate for an increased End-Diastolic Volume? (ON BOARDS)
Definition
Ventricles will compensate with hypertrophy
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