Flashcards in Cardio Basics Deck (35)
Tall slender P-wave = ___ atrial enlargement
Wide P-wave = _____ atrial enlargement
What determines stroke volume?
Preload, afterload, contractility rate
What determines cardiac output?
Stroke volume x HR
What is the heart's response to acute blood loss?
Incr CO via catecholamine-induced vasoconstriction
How does the kidney respond to acute blood loss?
ADH release causes H2O and Na resorption
How does the spleen respond to acute blood loss?
Contraction injects RBCs into circulation
What is the ECF:ICF ratio?
What % of body weight is comprised of water?
TBW = 60% BW
What is the ECF made of?
Plasma, interstital fluid, lymph
Critical reduction in intravascular volume (dehydration, hemorrhage, third-spacing)
How does hypovolemia cause shock?
Decr preload = decr SV = decr CO
Result of decreased myocardial contractility with subsequent decrease in O2 delivery
What type of shock is always assoc. w/primary heart disease?
Occurs w/abnormal blood distribution that impairs blood return to the heart
Type of shock that is typically secondary to sepsis and anaphylactic reaction causing vasodilation
Sound made by the closure of the AV valves
Sound made by the closure of the pulmonic and aortic valves
Subtle sound caused by ventricular relaxation (not usually heard in small animals)
Subtle sound assoc. w/atrial contraction (not heard in small animals)
Which ICS do you listen to the pulmonic valve?
Which ICS do you listen to the aortic valve?
Which ICS do you listen to the mitral valve?
Which ICS do you listen to the tricuspid valve?
Small slit that allows shunting between RA and LA in fetus but disappears when lungs expand with first breath
Which direction is the shunt if the foramen ovale fails to close?
LA to RA
Calf with failure to thrive, pulmonary edema, and pneumonia likely has which congenital heart defect?
Which direction is blood shunted with VSD?
L to R
What does a R to L shunt cause?