E1: Anti-ANGINALs Flashcards
Angina = pain when the heart becomes ______
anoxic
Pain occurs more often at _______
NIGHTTIME (Parasym actvivity and not enough O2 to the heart)
What type of angina is this? Coronary arteries not able to transport enough oxygen to meet myocardium demand….Oxygen imbalance causes ISCHEMIA..Stress, exertion, eating, anxiety, cold, local anesthesia, pain, atherosclerotic lesions (block flow of blood). If demand exceeds available oxygen, then NECROSIS occurs = MI
Typical (exertional) angina
Variant Angin: _____: 4 /100,000…More common in _____ (m/f?); Which RACE is more prone?
Rare…Japanese
What type of angina is more common? Which is more rare?
Typical (exertional) is more common….Variant Angina is more rare
When coronary arteries are normal: Mainly _____ receptors in coronary arteries = ________ causes vasodilation (improves bloodflow to the heart)
beta 2… epinephrine
Epinephrine also acts on _____ receptors (WHAAa??), increasing oxygen demand of the heart
beta 1
INTERESTANTE!!!! Individuals with variant angina have more ______ receptors than ______ receptors in their coronary arteries (vasoconstriction)
alpha 1….beta 2
Variant Angina: Epinephrine increases heart rate and cardiac output (____) but now vasoconstricts coronary arteries (_____)..Double Whammy
beta 1… alpha 1
IN variant angina: EKG diagnosis consists of an elevated _______ segment which is not present in normal angina
S-T segment
What are the 5 typical treatments of angina?
1.Nitrates 2.beta blockers 3.Ca2+ channel blockers 4.Antiplatelet drugs 5.Antithrombin therapy
Nitrites and Nitrates Cause relaxation of all ________
smooth muscle
Nitrates: Drugs work on endothelial cells that produce nitric
oxide…activates ________ which converts GTP to cGMP, which then causes dephosphorylation of light chain _____
guanylyl cyclase…myosin
Nitrates-Nitrites = Results in arterial and venous vaso______* WHICH decreases preload, which is ______ to the heart
dilation dawg…..venous return!
Nitrates: side effects- the rapid vasodilation causes _____… What are two other side effects?
headaches! (pressure in the skull dawg)…Flush/Postural Hypotension!!! & increased sympathetic activity
Nitrates oxidize hemoglobin to ________
methemoglobin
Large doses of nitrites/nitrates for LONG TERM
use decreases _________ capabilities
oxygen-carrying…YIKES
Nitrates: rapid _______ will develop: transdermal patches allow for a daily nitrate free interval….12 hours on, 12 hours off
tolerance
What are the 5 preparations of Nitrates?
- Amyl Nitrate 2.Vaprole 3.Nitroglycerin 4.iso-sorbinde DInitrate (long acting) 5.iso-sorbide MONOnitrate (even longer acting)