Cardiac Complications Flashcards
_________________ is the build up of ACS plaque inside coronary vessels.
Coronary Artery Disease
CAD risk factors include:
DM, age, heredity, male, dyslipidemia, obesity
_____________ and ________ are two populations who have issues with HTN and lipids.
African Americans and Hispanics
Estrogen is ________
Cardioprotective
_____ angina is the most common type and occurs with stress and activity. It is relieved by ____.
Stable, rest
Prinzmetal’s angina is caused by ________. In between spasms, tissue gets hypoxic.
vasospasm
alters calcium flow and reduces prostaglandins
Unstable angina occurs more frequently and lasts longer. It can occur with or without _____. Heralds an MI.
activity
Angina pectoris is decreased ___.
O2
Causes of angina:
Hypotension (can be exercise induced), cocaine, HF, pulmonic diseases.
Clinical manifestations of angina include:
Chest pain, Description of pain – very important
Dyspnea, pallor, tachycardia, anxiety, and fear
Atypical symptoms – indigestion
Precipitating factors
Relieving factors – what made it go away? Nitro, bed rest, O2
Sense of “doom”
Diagnostic tests:
EKG --> most important Troponin --> lab of choice. CHF can bump levels CK and CK-MB Stress test - Lexiscan and Dobutamine Echo or TEE Coronary angiogram (Cath Lab)
Serum Cholesterol and Triglyceride Values
Total Cholesterol Under 200
LDL Less than 100
Tricglycerides < 150
Meds for angina:
Nitrates (don’t give to patients who take Viagra)
Aspirin - antiplatelet
Beta-blockers –> work by decreasing workload of heart (decreases HR) Ex: Lopressor. Decreases O2 demands which limits ischemia. **c/a in COPD/asthma patients. Can send them into a bronchospasm.
Calcium Channel Blocker - for prinzmetals angina, bradycardia, conduction defects or certain types of HF
Primary goal for angina:
increase oxygen. Put PT on 02 and 2L/min. Or if home, lay down and take deep breaths.
Nursing interventions:
Perform 12 Lead for acute CP – truly diagnostic
Have SL Nitro available
Continuous cardiac monitoring
4-6L/min of oxygen per NC
Space activities
Reduce risk factors: physician follow up, Na restriction, diet change, cholesterol meds
MONA is what?
morphine, oxygen, nitrates, aspirin
Acute coronary syndrome is what?
collaborations of s/s of sudden myocardial ischemia
Causes:
unstable angina, STEMI, N-STEMI
Clinical Manifestations:
chest pain – most defining characteristic. Sub-sternal or epigastric. Can radiate to L arm, radiate to jaw and neck. Pain lasts 10-20 mins. Dyspnea, diaphoresis, pallor, tachycardia.
Diagnostic tests:
EKG & cardiac enzymes
Treatment Modalities:
If blocked, revascularize. Do percutaneous!
Meds: tPA –> 2-3 large bore IV’s to draw labs off of
Acute MI
Blood flow is completely blocked
Results in death of myocardial cells – goes through ischemia and then death
N-STEMI is a partial occlusion – minor elevation of cardiac enzymes
STEMI – abrupt disruption of blood flow – no way that the body can compensate
Elevated ST segments or Q wave on 12 lead. Once you’re “healed,” you will always keep your Q wave.
Damage usually occurs in 1 out of the 3 coronary arteries
Lethal arrythmias (v-fib and v-tach) and death can occur (more so than because of necrotic tissues.
Coronary Arteries:
Left Anterior Descending (widow maker) -> left ventricle pump failure
Right coronary artery -> supplies R atria and ventricle
Circumflex -> supplies the back of the heart
Left Main Coronary Artery -> divides into circumflex and LAD
Resulting Damage to Walls of the Heart – can be full or partial
Subendocardium – non Q wave MI – only takes 20 mins for damage to show
Epicardium
Transmural – Q wave MI – through all layers of cardiac muscle. ST elevation
Remodeling
Goal of all nursing interventions r/t MI
re-establish oxygen supply to area of MI
Door to ___ is 10 mins, to need IN artery is 90 mins.
EKG