Angina Flashcards
(18 cards)
With Stable angina you want to
decrease oxygen demand
Variant angina you want to
increase o2 supply with vasodilation of coronary arteries
unstable angina you want to
- med emergency
- treat as MI until proven
Organic nitrates prototype
Nitroglycerin
Action of nitro
Causes vasodilation of vessels in stable angina decreasing oxygen demand
- increase oxygen supply in variant angina by relaxing coronary artery vasospasm
Forms of Nitro
- oral, sublingual, IV, buccal, patch
- short and long acting: isorbade dintrite and isosrobide mononitrite
Most common form of Nitro
- sublingual
- store in dark package
- dont pour in hand
- dont storei n bathroom
- peak plasma within 4 mins
Admin directions of nitro
sublinguual -> do not chew or swallow
- admin 1 SL tablet every 5 mins x3
- IF no relief after 1st dose, then call EMS
Education for organic nitrates
- Refrain from alcohol -> severe hypotension
- Transdermal patches-> rotate sites
Tolerance develops - drug-free periods at night
Common SE:
-Headache - Hypotension, orthostatic hypotension
- tachycardia
WEAR gloves for paste and transdermal administration
- wipe off skin before applying defib pads to skin
Nitro drug interaction
- life threatening hypotension and cardiovascular collapse interaction with viagra or other ED drugs
Beta Blockers for angina Action
- Reduces cardiac oxygen demand of heart by slowing HR and reducing contractility
- 1st line of tx for chronic stable angina
NSG consideration
- Check the pulse ( hold if <60 or if they have HF or angina then 50bpm)
- Check BP
- Diabetes: mask s/s of hypoglycemia
- Teach not to stop abruptly
- Avoid in asthma/ COPD (cardiac nonselective)
- Monitor for brady and AV block
Beta Blocker prototype is
metoprolol
Calcium channel Blockers Action
Cause arteriolar smooth muscle relaxation-> dec BP ( afterload) -> dec myocardial oxygen demand
- can cause vasospasm to increase oxygen delivery
CCB SE
hypotension and reflex Tachy
Monitoring for CCB
S/S of HF with diltiazem and verapamil -DAily weights ( fluid rentention) DO not crush exteended release No grapefruit juice -Watch for bradycardai and AV Block with diltiazem and verapamil Protoype: diltiazem
Ranolazine (Ranexa)
- newest anti-angianl drug
- decreases incidence of angina and increase exercise tolerance
-Don’t really know how it works
CYP450 metabolism pathway-drug interactions (no grapefuit juice)
AE of Ranolazine
increase QT interval
- constipation, dizziness, nausea, and HA