week 9

Question 1

what does niacin do

Answer 1

decrease triglyceride and total cholesterol level
increaseHDL
release histamine cause peripheral vasodilation
hepatoxitity

Question 2

what does dysrhythmia drugs do to the body

Answer 2

impact the electrical conduction system of the heart

Question 3

what cause dyshythmias

Answer 3

control the rate and rhythm, governed by SA node
firing of abdominal pacemaker cells
blockage or normal electrical pathways

Question 4

Class 1 sodium channel blockers

Answer 4

block the movement of sodium into the cells of cardiac conducting system
decrease formation and conduction of electrical impulses

Question 5

class 2 beta blockers

Answer 5

blocking sympathetic nervous system stimulation of beta receptors in the heart
decrease risk of ventricular fibrillation
(inderal)

Question 6

class 3 potassium channel blockers

Answer 6

prolong duration of the action potential
slows repolarization prolongs refractory period
(cordarone)

Question 7

class 4 calcium channel blockers

Answer 7

block the movement of calcium into conductile and contractile myocardial cells
only effectivein the SVT
(Calan)

Question 8

reduce the strain on the left ventricle by reducing systemic vascular resistance

Answer 8

vasodilator

Question 9

increase the force of contraction

Answer 9

inotropic drugs

Question 10

pull water off the system to lower the pressure

Answer 10

diuretics

Question 11

correct rate or rhythm

Answer 11

anti aaryrhmic drugs

Question 12

What is the usual dose of niacin

what can it do to the body

Answer 12

usual dose 1-6g daily

may cause hepatotoxicity, will vasodilate, so blood pressure will drop, causing dizziness

Question 13

How does cardiac electricity develop

Answer 13

potassium sodium and calcium channels regulate the difference in concentrate of each ion between inside and outside of cardiac cells