Cardiac Flashcards
Beta blockers
-lol
Blocks receptors for epi/norepi
Decrease BP, myocontractility, CO, O2 demands
Stable angina-
S/Sx
Tx
Heart needs O2, pain on exertion
Nitro, 1 tab q5min x3
Nitro is a vasodilator, will cause headache.
Calcium channel blockers
-pine, diltiazem, verapamil
Vasodilation of coronary arteries–> decrease after load! and therefore the workload on the heart.
Cath dyes-
Check for?
Pt will feel?
Kidneys filter dye, must ah are good-functioning kidneys
Makes pt. feel hot
Unstable angina
Impending MI
NOT relieved by rest
STEMI
Always worry about this client.
Must be in a cath lab within 90 minutes
Troponin
When does it show up?
What are normal levels for T and I?
Elevates in 3-4 hours, remains up for weeks
<2
CPK-MB
When does it elevate?
3-12 hours, stays for 24 hours
Amiodarone
For?
Side effect?
Anti-arrhythmic
For V-fib
Side effect- HYPOtentsion
Drugs used for chest pain at ED?
4
O2
Asa
Nitro
Morphine
Fibrinolytics
-ase Streptokinase Tenecteplase Reteplase Heart within 6-8 hours Brain within 3 hours
Chest pain after any PCI?
Call physician immediately–reoccluding
CABG
Main reason?
Left coronary artery is the widow maker.
One main cause of right sided heart failure?
Pulmonary embolism. It will block the lung flow, causing pulmonary HTN, which leads to extra work on the right side of the heart.
BNP
Normal value <100
Released when ventricles are too full. Indicative of heart failure.
Digitalis
Levels
Action
0.5-2.0
Increases efficacy of heart pump.
CO increases, causing kidney perfusion to increase–> pt. will diurese.
Digitalis toxicity
Early- anorexia, N/V
Late- arrhythmias, vision changes.
Diuretics
Suffix?
Precautions?
-ides + Spirinolactone
Salt substitutes contain high K+
Narrowed pulse pressure
Tamponade sign
Widened pulse pressure
ICP sign
Anti coagulants
Suffix
-arin
Warfarin food limitations
Vitamin K. Warfarin blocks vitamin K from clotting cascade.
ACE inhibitors
Suffix
Action
-pril
Blocks angiotensin cascade, Prevents vasoconstriction by blocking angio 1-» angio 2
Watch for HYPERkalemia
ARB
Suffix
Action
-sartan
Block all angiotensin receptors = prevention of vasoconstriction and prevention of release of aldosterone (Wasting of Na+ and H2O, retention of K+)
Watch for HYPERkalemia.
Amiodirone
For V-fib if resistant to deFib, usually given with lidocaine
ARBs and ACEs
Physiological effect
Block aldosterone= lose H2O and Na+
Diurese–> decrease workload on heart