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32 Cards in this Set

  • Front
  • Back
The inability of heart to pump enough blood to meet the need of the body is called heart failure.
True
The major goal of pharmacotherapy of heart failure is to enhance cardiac performance including enhancement of myocardial contractility and increase in CO.
True
Systemic edema is d/t failure of the LV, and pulmonary edema is d/t failure of RV.
False
The ventricular performance curve, a plot of cardiac output against end-diastolic pressure will be up-shifted during chronic heart failure.
False
Diuretics decrease sodium/water retention and reduce preload of the heart in treatment of chronic heart failure.
True
Digoxin can be used to effectively treat chronic heart failure mainly d/t its action to enhance myocardial contraction and to slow down HR by inhibition of the Na-K ATPase in cardiac myocytes and increase in the vagal activity.
True
Increase in intracellular cGMP and consequent Ca concentrations in cardiac myocytes is the major mechanism mediating the action of milrinone, a phosphodiesterase inhibitor, which enhances myocardial contraction.
False
The major therapeutic goal of BB during chronic heart failure is to reduce the HR and lower BP that in turn reduces the workload of the heart.
True
Which drug group does not decrease the workload of the heart (including preload and afterload) during the tx of chronic heart failure.
Cardiac glycosides
Which drug group has a positive inotropic effect?
Phosphodiesterase inhibitors
Why is a gradual dose increase suggested as well as monitoring the blood concentrations recommended for cardiac glycosides?
The dose of these drugs has a narrow therapeutic window
What feature makes PDEI sometimes referred to as 'inodilators'?
Producing vasodilation and increasing myocardial contractility
What mechanism may not mediate the therapeutic action of ACEI on chronic heart failure:
Increase renin production
Why must BB be used with caution in tx of chronic heart failure:
It's negative inotropic action
What arrhythmia often occurs during use of either cardiac glycosides or PDEI in pts with chronic heart failure?
VT
Cardiac glycosides are highly selective inhibitors of Na/K ATPase. What mechanism mediates the increase in myocardial contractility?
Increase in intracellular Ca level
Diuretics are used to tx heart failure because of:
Decrease in preload of the heart
The therapeutic action of digoxin in tx of chronic heart failure is through:
Increase in myocardial contractility
Currently, ACEI are increasingly used for tx of chronic heart failure b/c this group of drugs is capable of:
Decrease in both preload and afterload of the heart
As a group of drugs newly developed for tx of chronic heart failure, PDE inhibitors may exert their action by:
Increase in myocardial contractility and decrease in afterload of the heart
Weakening of the heart muscle and insufficiency of cardiac performance is:
CHF
CHF is does not have a single cause to a disease, but is a ______
Pathological process
Medical goals in tx of CHF include:
Prevention and slowing progression
Development of CHF is a ________ process.
Chronic, slow
In response to low CO, there is increased _____ discharge with increases the CO. In response to decreased RBF, there is increased renin and ANGII which increases_____.
Sympathetic, BP
Remodeling leads to:
Cardiac hypertrophy
Consequences of uncompensated CHF include : decreased contractility which decreases ______; decreased tissue perfusion and RBF which leads to ______ and Na/H2o reabsorption which leads to edema.
CO; increased ADH/AngII
Increased edema in the body leads to increased _____ which increases the _______ of the heart.
TPR; workload
If the ventricle is overly stretched, the effect of ventricular contraction is ______ and the CO vs EDVP curve shifts ____.
Diminished; downward
Given to decrease PVR and afterload:
ACEI or ARB
Give ___ if systolic dysfunction with 3rd heart sound or a fib is present.
Dig
Give ___ to pts with stable class II-IV heart failure.
BB