Final Exam Flashcards
(224 cards)
3 pacemakers of the heart
SA node (60-100)
AV node (40-60)
purkinje fibers (20-40)
afib S&S
dizziness, palpitations, syncope, dyspnea, fatigue
management for afib
Manage obesity, HTN, obstructive sleep apnea, diabetes, smoking, alcohol, caffeine, surgery
meds for afib
anticoags (watch plt count)
BB (better than digitalis, not for pts in HF or hx bronchospasm)
Ca+ channel blockers (verapamil/diltiazem, good for pts w asthma, COPD, HTN, and HF)
digitalis (w BB)
amiodarone (converts rate and rhythm, ibutilide)
rhythm control for symptoms
procedures for afib
radiofrequency ablation
maze with cryoablation
Transesophageal echocardiogram for atrial thrombus
cardioversion (not for pts with clot)
catheter ablation
electrical cardioversion things to know
patient is NPO for 6 hours pre-procedure, IV access needed, anterior and posterior pads placed patient sedated with IV midazolam & propofol. Synchronized electrical shocks delivered. Observe for burns, alleviate discomfort
pharmacologic cardioversion
Using antiarrhythmics (amiodarone, sotalol, flecainide) for patient who developed afib within the past 7 days. Monitor HR, BP, K+, perform EKG to assess for QT prolongation. Contraindicated in digitalis toxicity, multifocal atrial tachycardia and sub-optimal anticoagulation
what anticoag to use in patients with mechanical heart valves
warfarin!! But watch vitamin K and do frequent INR draws
procedure for pts who can’t handle long term anticoags
left atrial appendage obliteration for stroke prevention as this is the main site for thrombus formation
target INR
2-3
complications of afib
clots causing CVA, MI, or cognitive decline (from micro emboli)
hypoperfusion from < CO (heart failure)
findings of angina
May be described as tightness, choking, or a heavy sensation
Frequently retrosternal (behind sternum, deep pain) and may radiate to neck, jaw, shoulders, back or arms (usually left)
Anxiety frequently accompanies the pain
Other symptoms may occur: dyspnea or shortness of breath, dizziness, nausea, and vomiting
unstable angina
characterized by increased frequency and severity and is not relieved by rest and NTG.
No longer managed with NTG, pain still exists
priorities for treating angina
no activity (semi-fowler)
VS, resp distress, pain
ECG
meds (NTG)
2L oxygen
pt teaching for angina
avoid extreme temps
avoid OTC meds that > HR or BP
no nic or fat
high fiber
maintain normal BP and glucose
NTG bottle
dark, keep away from kids and sunlight
unstable angina vs STEMI vs NSTEMI
Unstable angina, coronary ischemia but no acute MI
STEMI: acute MI, damage to myocardium
NSTEMI: elevated biomarkers, no ECG evidence of MI, less damage
manifestations of MI
Chest pain: Occurs suddenly and continues despite rest and medication
SOB; C/O indigestion; nausea; anxiety; cool, pale skin; increased HR, RR
ECG changes: Elevation in the ST segment in two contiguous leads is a key diagnostic indicator for MI
Lab studies: cardiac enzymes, troponin, creatine kinase (muscle damage), myoglobin
MONA and VOMIT
morphine, oxygen, nitrates, aspirin
vitals, oxygen, monitor, IV, time (if few hrs, give clot busters)
S&S of MI in women
Sweating: Similar to stress sweat, rather than sweating from exercise
SOB: Typically trouble breathing for no reason
Fatigue: Extreme tiredness
Chest pain or discomfort: The pain can be anywhere in the chest, not just the left side
Pain in the arms, back, neck, or jaw
Pain can be gradual or sudden
Nausea
Flu-like symptoms, including nausea, may occur a few days before a heart attack
Stomach pain: Can range in intensity from heartburn-like pain to severe abdominal pressure
emergency procedure for MI
CABG
hypertrophic and dilated heart
cardiomyopathy
right sided HF
Viscera (near abdominal area, ASCITES) and peripheral congestion
JVD
Dependent edema
Hepatomegaly
Ascites
Weight gain
Left sided HF
Pulmonary congestion, crackles
S3 or ventricular gallop (happens with HTN, right after S2, S4 is right before S1)
Dyspnea on exertion (DOE)
Activity level before you feel out of breath
Diet
How many pillows
Low O2 sat
Dry, nonproductive cough initially
Ace inhibitors, arbs taken instead
Oliguria