Antianginals Flashcards
What is angina pectoris?
Chest pain
The bodies response to lack of oxygen
-heart muscle does not contain pain receptors
-Substance p is released from ischemic myocardial cells and substance p reacts with pain receptors
What is stable angina ?
Exertion,pain relieved by rest or nitrates
What is prinzmetal angina ?
Spasms, can occur rest and/ or night
What is unstable angina ?
Advanced dz,often leads to MI
What is unstable angina ?
Advanced dz, often lead to MI
How do antianginal drugs work?
Dilating blood vessels and decreasing workload of heart
What are additional meds to prevent angina ?
ASA,antilipids,HTN meds
What is nitroglycerin
A nitrate which is for antianginal
What is the therapeutic actions of nitroglycerin ?
nitrate
-Relax smooth muscles producing vasodilation
-dilation reduces venous pressure and return
-Decrease blood volume/pressure (preload)
-Vasodilation increase blood flow to ischemic areas
-Dilation reduces peripheral,vascular resistance (afterload)
What are indications of Nitroglycerin (Nitro-bid)
Mainstay of antianginal drug to (both prophylaxis and treatment)
What are routes of administration for nitroglycerin?
Nitrate
Sublingual, buffalo,chewable, tablets, capsules, ointments, patches & IVs
Describe sublingual administration of Nitroglycerin?
-Immediate relief of angina
-Place under tongue–> allow to dissolve
Should “burn” under the tongue
-Check Bp before admin
-Could administer it 5 minx 3doses( should be spaced out by 5 mins)
-If there is no relief call 911
Describe the bottle of a sublingual Nitroglycerine
Nitrate
-Potency deteriotes when bottle is opened
-Change every 6 month unopened and every 3 months opened
-Light sensitive dark bottle( Keep in a dark/ dry place and in a dark color container, no plastic.
What are adverse effects of Nitroglycerine orally?
Nitrate
-Dizziness
-Headache
-Lowers bp-fall potential
Flushing, sweating
Describe transdermal administration of Nitroglycerine?
Nitrate
-Prophylaxis(Used to prevent anginal attacks)
- Use prn SL preparations if CP occurs
-Apply to clean area (not breasts)
- Do not shave hair (OK to clip)
- Rotate sites
- Leave off at bedtime (to reduce tolerance)
- In hospital date, record placement in EMAR
- Monitor for skin reactions