Cardiac Flashcards
(24 cards)
Hydralazine therapeutic use
To decrease Hypertension
Heart failure
What adverse reaction are all vasodilators at risk for?
Reflex tachycardia
Mechanism of hydralazine
Vasodilation of the arterioles
What does minoxidil do?
Dilation of the arterioles
What is the therapeutic effect of minoxidil?
To treat excessive hypertension
What is angina?
Narrowing of the blood vessel
Causes acute chest pain due to lack of oxygen to the heart muscle
How do we treat the vessel causing angina?
Vasodilation of the narrow blood vessel
What are three antianginal agents?
Nitroglycerin
Beta blocker- causes vasodilation
Calcium channel blocker
What is it called when you have a heart attack in your sleep and die?
Silent ischemia
Cause Of Stable angina
Exercise induced
How is unstable angina treated?
MONAB
Morphine Oxygen Nitrate Aspirin Beta blocker
Used to treat unstable angina
What is the ideology behind treatment of angina?
Increase oxygen within the body
Decrease oxygen consumption by decreasing workload of the heart
What is the use of nitroglycerin?
Used to treat angina
By acting as a vasodilator of the arterioles
What drug is easy to build a tolerance to?
Nitrates
What should you do if you build a tolerance to nitrate?
You should have 8 drug free hours a day.
Take in the morning, stop use at night.
How should nitrates be stored?
Away from body heat, sunlight and stored in a brown container
Describe orthodontic hypotension i postural hypotension
When you’re seated or lying down your BP is normal, but then we you stand up it causes the blood to move to the peripheries which causes a decrease in blood flow from your head and your heart.
What do calcium channel blockers do for the heart?
Hypertension
Angina
Dysthymia
Name two calcium channel blockers
Diltiazem
Verapamil
What is a dysrhythmias?
Abnormal heart rate or irregular contraction of the heart
How to treat dysrhythmias
We want to restore the cardiac rhythm by treating the heart rate and contraction of the heart muscle
What two vital signs do you want to check when taking sodium channel blockers?
BP and heart rate
Make sure they are not to low because Na blockers cause a decrease in conduction of impulse through the heart. Decreasing contraction of the heart and decrease in heart rate.
Hydralazine decreases
After load
Nitroglycerine decreases
Preload
