Anti-Anginal Flashcards

1
Q

Nitroglycerin and Isosorbide are what class of drugs?

A

Nitrates & Nitrites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

MOA for Nitrates, Nitrites?

A

Vasodilation via NO –> cGMP –> uneven vasodilation (veins > arterioles) –> decreased preload > afterload

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

DOC for any acute anginal attack?

A

Nitroglycerin and Isosorbide.

Decreased myocardial O2 requirements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T or F: nitrates relax all smooth muscles?

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why is sublingual the preferred form of Nitrates?

A

Avoids hepatic destruction (due to high first pass metabolism), rapid absorption, immediate relief

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Adverse effects of Nitrates/Nitrites?

A

Throbbing HA (vasodilation in brain) Tachycardia, Orthostatic hypotension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

IF you take nitro often, what will happen?

A

Tolerance or marked reduction to drugs effects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

T or F: Calcium channel blockers relax all smooth muscles that depend on calcium for normal resting tone and contraction?

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Verapamil, Diltiazem, and Nifedipine are what drug class?

A

Ca Chanel Blockers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Verapil has greater effect on vascular smooth muscle or cardiac muscle?

A

Cardiac muscle (depress SA/AV nodes)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Niedipine has greater effect on vascular smooth muscle or cardiac muscle?

A

Vascular smooth muscle (cause vasodilation and reflex tachycardia)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why is Nifedipine indicated only in HTN, not angina?

A

May provoke angina attacks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What anti-anginal class is better for chronic angina tx and not immediate angina relief?

A

Ca Channel Blockers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What Ca channel blocker will have equal effects on vascular smooth muscle, cardiac muscle, vasodilation, reflex tachycardia, depression of SA/AV node function

A

Diltiazem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Nifedipine can lead to what harmful effect?

A

Increased development of MI

rapid hypotension –> baroreflex –> increased cardiac workload –> ischmia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Verapamil and diltiazem can lead to what harmful effect?

A

Serious cardiac depression (from SA/AV node depression)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

B-blockers have 3 CV effects on what 3 organs?

A
  1. Heart (decrease CO)
  2. Kidneys (decrease renin)
  3. CNS (decrease sympathetic vasomotor tone
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How do B-blockers provide anginal relief?

A

Decrease sympathetic tone –> cardiac contractility –> myocardial O2 demand

19
Q

T or F: Beta agonists are ineffective in producing coronary vasodilation?

A

TRUE

20
Q

Bronchoconstriction, increased plasma TGs, decreased insulin, hypoglycemia response, and CNS side-effects are SE of what class of drugs?

A

B-blockers

21
Q

Why might B-blockers be harmful in tx of variant angina?

A

B/c slow HR and prolonged ejection will increase LV EDV and increase myocardial O2 requirement

22
Q

What is a new medication that is a last ditch effort for angina?

A

Ranolazine (works by a different mechanism, PFOX, inhibitor)

23
Q

What is the preferred tx for variant or angiospastic angina?

A

Nitrates and CCB

B-blocks will not dilate spastic coronary vessels

24
Q

Goals of anti-anginal therapy? (2)

A

Increase exercise tolerance

Decrease frequency and duration or myocardial ischemia

25
Q

What group of medications will have the best effect on tx of angina?

A

Various combos of 3 major drug classes

26
Q

What is the tx for Nitrate induced reflex tachycardia?

A

cardio specific CCB or B-blocker + vasodilator

27
Q

Most preferred drugs angina w/ concomitant for asthma?

A

CCB, nitrate or nitrite

28
Q

Most preferred drugs angina w/ concomitant for DM?

A

CCB, nitrate or nitrite

29
Q

Most preferred drugs angina w/ concomitant for HF?

A

Nitrate or nitrite

30
Q

Most preferred drugs angina w/ concomitant for HTN?

A

B-blocker, CCB

31
Q

Most preferred drugs angina w/ concomitant for peptic ulcer?

A

B-blocker, Nitrate or nitrite

32
Q

What drug is selective inhibitor of cGMP specific phosphodiesterase type 5 (PDE5)?

A

Sildenafil

33
Q

Sildenafil is used in the tx of what 2 diseases?

A

ED

Pulmonary HTN

34
Q

When is max concentration reached for Sildenafil?

A

3-120 minutes

35
Q

What is the half life of sildenafil?

A

4 hours

36
Q

What is Sildenafil metabolized by?

A

CYP3A4 > CYP2C9

37
Q

Visual impairments: transient blue color tinge to vision, photophobia, or blurred vision are SEs of what drug?

A

Sildenafil

38
Q

Sildenafil is contraindicated in what populations?

A
  1. Pregnant
  2. Lactating women
  3. Infants/children
  4. Current nitro use (any form, = increased vasodilation)
  5. Current a-blocker use (= increased vasodilation)
39
Q

What juice should you avoid if taking Sildenafil?

A

Grapefuit

40
Q

What two drugs are more selective for PDE6 vs PDE5? What does this mean for SEs?

A

Vardenafil, Tadalfil

Decreased retinal sx (less blue tinge to vision)

41
Q

Will vardenafil allows for an erection sooner or later than if using sildenafil?

A

Sooner

V = “V”ery soon

42
Q

What ED medication allows for more spontaneity?

A

Tadalafil

(T = good for “T”omorrow

43
Q

Sildenafil, Tadalafil and Vardenafil are what class of drugs?

A

Phosphodiesterase type 5/6 inhibitors

Originally anti-anginal med, but more effective at tx ED