Calcium Channel Blockers Flashcards
During contraction of muscle Ca levels increase or decrease intracellularly?
Increase, once the contracion is over Ca returns to the sarcoplasmic Reticulium
What are the 6 types of Ca Channels?
L N P Q R T
Type L 5 sub units?
Alpha 1( main pathway) Alpha 2 Beta Gama Delta
3 types of Calcium Channel Blockers
Phenylalkylamines Benzothazepines DHP’s (1,4-Dihydropyridines)
Verapamil is a ?
Phenylalkylamines
Nifedipine is a ?
DHP’s (1,4-Dihydropyridines)
Diltiazem is a ?
Benzothazepines
Nicardipine is a ?
DHP’s (1,4-Dihydropyridines)
Amlodipine is a ?
DHP’s (1,4-Dihydropyridines)
NON DHP’s (1,4-Dihydropyridines) Diltiazem and Verapamil cause
Negative inotropic, chronotopic and dromotropic effect and a Positive lusitropic effect (Relaxation effect)
Ca Blockers decreased Perif vascualr Resistance by ?
Arteriole dilation, do not effect venous tone
Ca Blockers cause?
Decrease coronary vascular resistance, and increase coronary blood flow
KNOW THIS CHART
![](https://s3.amazonaws.com/brainscape-prod/system/cm/019/476/483/a_image_thumb.png?1659401165)
Beta Blockers can be used with which Ca Blockers?
DHP’s
Common Uses for Ca Blockers
Angina (vasospastic or exertional)
Unstable Angina
PSVT
HTN
Hypertrophic cardiomyopathy
Subarachnoid Hemorrhage ( Nimodipine)