EXAM 1 Review Flashcards
What are the normal lab values for cholesterol?
Total Cholesterol <200mg/dL
HDL > 60mg/dL
LDL < 70mg/dL IF PT IS HIGH RISK, <100mg/dL for females, < 150mg/dL for males
TG < 135mg/dL for females, < 150mg/dL for males
What are the non-modifiable risk factors for CAD?
age, gender (men tend to develop earlier), ethnicity (African American at greater risk), family history (primary relative w/ MI before the age of 55/65), diabetes
What are the modifiable risk factors for CAD?
smoking, obesity, sedentary lifestyle, metabolic syndrome, hyperlipidemia, DM, HTN, proper management of diabetes/prediabetes, unhealthy diet, stress, sleep apnea
What are important health promotion points for CAD?
- ID at risk patients
- physical activity –> FITT(150 min/wk or 75min/wk of vigorous exercise)
- Nutritional therapy –> TLC diet: decrease sat fat/ cholesterol, increase complex carbohydrates, fat <30% daily intake, high soluble fiber
What is the pharmacological management of CAD?
statins, antiplatelets/anticoagulants, BB, CCB, nitroglycerin
What are possible procedures for treatment of CAD?
angioplasty, stent placement, CABG
What are the main patient education points for CAD?
quite smoking stay active eat healthy diet control stress manage diabetes ***drugs alone will not be effective, pt must combine pharm interventions with healthy lifestyle modifications
What is Acute Coronary Syndrome?
Occurs when a plaque breaks off and blocks the coronary artery, concern for cardiac arrest. May present as STEMI (complete blockage), NSTEMI (partial blockage), or unstable angina
How will a patient present with ACS?
chest pain (may radiate to left arm), arrhythmias, SOB (at rest or on exertion), elevated BP (which will continue causing damage to vessel walls)
What Dr orders can the nurse anticipate in treatment of the patient with ACS?
EKG, cholesterol levels, CT to check for vessel occlusion or stenosis, angiogram, stress test (walk or pharmacological using dobutamine, adenosine, dipyridamole)
What are potential complications of a stress test?
MI, HF, cardiac arrest, dysrhythmias —> have a crash cart on hand!
What is an echocardiogram used to examine?
heart size, ejection fraction, valve function, pericardial fluid, masses/thrombi
What is angina pectoris?
chest pain that occurs intermittently over a long pd w/ the same pattern of onset, duration, and intensity of symptoms, caused by decreased blood flow through coronary arteries
What can cause an episode of angina?
physical exertion, exposure to cold, eating heavy metal, stress/emotion causing release of catecholamines
What are the different types of angina and how are they characterized?
stable angina: predictable pain that occurs on exertion, relieved by rest and exertion
Unstable angina: pain that increases in frequency or intensity, NOT relieved by rest/ NG
Silent ischemia: significant myocardial ischemia w/o associated symptoms —> elderly, diabetics (diabetic neuropathy), men aged 45-65
Prinzmetal’s or Variant angina: d/t coronary spasm at rest; frequent during REM sleep, r/t hyperactivity of SNS, ST segment elevation but only DURING the episode
Intractable Angina: severe incapacitating chest pain
What are the interventions for a patient experiencing angina?
NG —> SL tablets, one every 5 minutes up to 3 doses (0.4mg)
Oxygen: 2-3L nasal cannula
Antiplatelets, anticoagulants: ASA (180-325mg), Clopidogrel [Plavix] 75mg, Heparin (therapeutic at 2-2.5x normal aPTT –> CAUTION HIT); blood thinners: enoxaparen [Lovenox], Dalteparin [Fragmin], Eptifibatide [Integrillin]; BB (metoprolol), CCB
What are the general MOA of NG, BB, and CCB?
NG: dilates veins, decreasing preload
BB: decreases HR, myocardial oxygen demand, thus decreasing myocardial contractility; also controls pain
CCB: decrease SA node automaticity, AV node conduction, decreasing contractility; relaxes blood vessels, increasing CA perfusion; decreased workload = decreased myocardial demand
What goals should be met when evaluating effectiveness of angina. trx?
pt reports pain relief
avoid progression to MI
pt follows self care plan, completes follow up including exercise stress test
What are the common CM of angina?
pain
mild indigestion
choking/heavy sensation upper chest
feeling of impending death
What symptoms should you be alert for when a patient is experiencing angina (i.e. what indicates it may be progressing to MI)
complaints of unusual fatigue weakness, numbness in arms and wrists SOB pallow diaphoresis anxiety dizziness N/V accompanied by pain related symptoms
What is the process of diagnosing a patient’s angina?
pt hx
12 lead ECG
bloodwork
stress test
What is a myocardial infarction?
the IRREVERSIBLE necrosis of heart muscle, secondary to prolonged ischemia
c/b damaged myocytes (which will release cardiac enzymes), loss of contractility in affected tissue, and pain for longer than 30 minutes not relieved by rest
What s/s indicate an MI?
palpitations, irregular HR, tachy or bradycardia, JVD, hypo or hypertension, S3, S4, new murmur tachypnea, SOB, crackles N/V decreased urinary. output skin cool, clammy, diaphoretic, pale anxious, light headed FEELING OF IMPENDING DOOM
What s/s may indicate an MI in women?
neck, shoulder, upper back, and abdominal discomfort; SOB; N/V; sweating; lightheadedness; unusual fatigue
A patient presents in the ED with a suspected MI. As the nurse, when should you anticipate needing to draw labs?
Labs should be drawn initially then again at 4 hours (looking for elevated troponin, CK MB, myoglobin; remember, troponin is normally almost 0)
What medical interventions should the nurse expect to provide for a patient with an MI or suspected MI?
oxygen: 2-4L
aspirin: 325mg
nitroglycerin
morphine: 2-4mg
Beta blockers (Lopressor): 5mg
continuous monitoring, labs
establish 2-3 peripheral IV’s
May need to administer a stool softener —> prevent straining and vasovagal stimulation
keep pt on bedrest
After a patient arrives to the ED with a suspected MI, how long should it be before an ECG is completed?
What does T wave inversion imply?
ST Seg elevation?
Q wave?
10 minutes from arrival (time is muscle!)
ischemia
injury
infarction
What are potential complications of an MI?
dysrhythmias, HF, cardiogenic shock, papillary muscle dysfunction, ventricular aneurysms, pericarditis/dressler’s syndrome
After education, what should the patient with angina be able to do/verbalize an understanding of?
recognize s/s of angina
participate in activities to decrease possibility of further anginal episodes
avoid activities that precipitate anginal episodes
verbalize understanding of use of OTC meds (diet pills, decongestants)
maintain a healthy lifestyle: tobacco cessation, proper diet, normal BP/chol
verbalize an understanding of use of rx med: NG, BB, ASA
What is the difference between angiography and a PCI?
angiography is strictly a diagnostic tool to obtain information about the structure and function of the heart and its vessels (including any blockages)
a PCI is therapeutic, opening blockages and potentially placing stents
Prior to an angiography, what must be considered in preparing the patient?
ASSESS: allergy to shellfish?
EDUCATE: stop glucophage 3 days prior; if unable provide ample fluids to flush out and prevent renal damage
What are pre PCI interventions the nurse must perform?
during?
post?
Pre: pt education (dye will be injected via peripheral IV, may feel. fluttering as catheter passes through heart); check for informed consent; assess allergies to idodine dye or shellfish; clipper and cleanse injection site; NPO 6-8 hours prior (Cardiac meds with sips of water ok); PIVs patent and infusions. running as ordered
During: monitor for occlusions, check pedal pulses; monitor ECG, VS; administer conscious sedation as ordered
post: maintain bedrest 4-6 hours as ordered, frequent assessment of VS including chest pain, assess color, distal pulses of affected extremity, assess site for bleeding, hematoma; if femoral must lay flat for 1-2 hours, no crossing legs; monitor I&O, assess bandage frex
What is the arrival time to ED to cath lab time?
under 60 minutes
In which situations should fibrinolytics be used?
If PCI/cath lab is unavailable
What important nursing considerations and interventions must be made in administration of fibrinolytics?
all invasive procedures done prior to administering frx eval of chest pain, VS monitor for bleeding assess heart rhythm for reperfusion DR assess neuro fx
What are ABSOLUTE CI to fibrinolytic therapy?
active bleeding, known cerebral aneurysm, known intracranial neoplasm, previous cerebral hemorrhage, recent ischemic stroke, significant closed head injury or facial trauma w/i last 3 months, suspected aortic dissection