Drugs for Heart Failure Flashcards
Type of failure where the weakened heart muscle can’t squeeze as well and less blood is pumped out of ventricles
Systolic heart failure
Type of heart failure where the heart muscle is stiff/can’t relax and less blood fills the ventricles
Diastolic heart failure
Heart Failure class I
mild-no limitation of activity
Heart failure Class II
mild-slight limitation, ordinary physical activity results in fatigue, palpitation, or dyspnoea
Heart Failure Class III
Moderate-Marked limitation, less than ordinary activity causes fatigue, palpitation.dyspnoae
Class IV heart failure
Severe-unable to do any physical activity without discomfort, uncomfortable at rest.
Depolarization of the cardiac myocyte leads to operning of the
voltage gated Ca++ channels
Ca influx activates___?
Ryanodine receptors
____ drugs alter the force or energy of muscular contractions.
Inotropic
Negative inotropes ____ the force
weaken
Postive Inotropes ____ the force
Increase
_____ drugs may change the heart rate by affecting the nerves controlling the heart or by changing the rhythm produced by the sinoatrial node.
Chronotropic
____ chronotropes increase heart rate
Positive
____ chronotropes decrease heart rate
Negative
Cardiac Glycosides (digoxin), B adrenergic receptor agonists, bipyridines are all examples of
Positive Inotropic drugs