Quiz 2 Flashcards

(49 cards)

1
Q

Cardiac Function is regulated by…

A

The Autonomic Nervous System

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2
Q

ANS controls involuntary functions including..

A
  • Contraction and relaxation of smooth muscle
  • Heart rate and contractility
  • Endocrine secretions
  • Blood pressure
  • Digestion
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3
Q

2 main divisions of the autonomic nervous system

A
  • SNS (sympathetic nervous system)
  • PNS (parasympathetic nervous system)
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4
Q

SNS is responsible for what response via alpha/beta receptors?

A

“fight or flight”

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5
Q

PNS is responsible for what response via muscarinic acetylcholine receptors?

A

Puts body back in calm state for “rest and digest”

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6
Q

Therapy concerns with Cholinergic drugs

A
  • cardiovascular effects
  • syncope ***
  • generalized vasodilation
  • abdominal pain/ diarrhea
  • frequent urination
  • bronchoconstriction
  • increased secretions
    examples: drugs used to treat urinary retention and insecticide poisoning
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7
Q

Drugs that antagonize PNS

A

Anticholinergics
- compete for ACh binding sites BLOCK PNS ACTIVITY

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8
Q

SNS

A

Fight or flight
encourage norepinephrine or epinephrine release and activate alpha and beta receptors

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9
Q

What is epinephrine used for

A

to treat anaphylactic or cardiogenic shock
activates alpha 1 receptors the most

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10
Q

Alpha Agonists

A

clonidine- agonist at alpha 2 - DECREASES blood pressure

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11
Q

Leading cause of cardiovascular morbidity and mortality

A

Hypertension
African Americans most affected

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12
Q

ACE ( angiotensin converting enzyme)

A

Primary target of drug class
converts angiotensin I into angiotensin II which is a very potent vasoconstrictor

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13
Q

Prostaglandins

A

Help counteract vasoconstriction in the kidneys

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14
Q

Examples of thiazide diuretics ADR’s

A

dizziness, orthostatic hypotension

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15
Q

Examples of loop diuretics ADR’s

A

low potassium
dehydration

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16
Q

Example of potassium- sparing diuretics ADR’s

A

high potassium

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17
Q

Therapeutic concerns with diuretics

A

orthostatic hypotension

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18
Q

What blocks renin release from kidneys?

A

vasodilation

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19
Q

Examples of beta blockers ADR’s

A

bradycardia (slow heart rate)
dizziness
mask low blood sugar

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20
Q

Examples of Alpha 1A ADR’s

A

orthostatic hypotension

21
Q

Examples of central acting alpha 2 agonists ADR’s

A

rapid return of HTN and tachycardia with abrupt withdrawal

22
Q

Example of calcium channel blockers ADR’s

23
Q

ACE inhibitors stands for..

A

Angiotensin Converting Enzyme

24
Q

Examples of ACE inhibitor ADR’s

A

dry cough (primary reason for discontinuation of treatment)

25
Therapeutic concerns for anti - HTN drugs
orthostatic hypotension
26
What should we avoid on patients taking vasodilators
heat therapy
27
Beta blockers, CCB's, vasodilators, and diuretics all do what to exercise capacity?
decrease exercise capacity
28
Pathophysiology of the heart
Low - density lipoprotein (LDL) = "bad" cholesterol thrombin converts fibrinogen into fibrin - LARGE CLOT
29
For acute heart attacks use what?
sublingual nitroglycerin tablets - almost immediate relief of symptoms
30
Nitrates
keep in ORIGINAL glass container place tablet under tongue and let dissolve 20-30 sec if chest pain is not relieved after 5 minutes after 1st dose call 911
31
Example of Aspirin ADR
bleeding especially in GI tract if not enteric coated
32
High alert medication = Heparin
an error in does can result in death
33
Example of heparin ADR
bleeding ( antidote: protamine sulfate)
34
Enoxaparin (Lovenox)
low molecular weight heparin given subcutaneously
35
Warfarin (Coumadin)
Vitamin k antagonist takes 4-5 days to obtain anticoagulant effect green leafy vegetables can cause significant decrease in INR compliance is HUGE
36
Example of Warfarin ADR
bleeding - can give vitamin k to help reverse bleeding Do not use in pregnancy - crosses placenta and is teratogenic
37
Therapeutic concern with Antithrombotics
BLEEDING caution when working around wounds or dressings
38
Triglycerides
HDL: high density lipoprotein LDL: low density lipoprotein VLDL: very low density lipoprotein
39
TX of Hyperlipidemia STATINS =
Gold standard main action is DECREASING LDL
40
Statin adverse effects
myopathy - muscle pain rhabdomyolysis - muscle breakdown liver function abnormalities
41
Example of Fibrates ADR
increased risk of muscle pain/ myopathy when combined with statins
42
PCSK9 Inhibitor
relatively safe and low incidence of adverse effects most common complaint is muscle pain/weakness
43
Example of Cardiac Glycosides ADR
significant bradycardia with toxic levels
44
Loop Diuretics =
Lose water examples = ide ( furosemide etc.)
45
beta blockers
examples = lol (metoprolol)
46
Alpha blockers
examples = zosin (Prazosin)
47
ACE inhibitors
examples = pril (lisinopril)
48
Angiotensin receptor blockers (ARBs)
Examples = sartan (Valsartan)
49
Aspirin mechanism of action
binds irreversibly for the life of the platelet