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ECG Stress Test Quiz

Thallium is considered a what? Isotope
What is the # 1 reason for doing a EKG / ECG? To look for evidence of coronary artery disease (To see if you have blockages in your coronary arteries.)
What are the three I's of myocardial infarction? Ischemia - Injury - Infarction
What does ischemia mean? Reduced blood supply
How accurate is a stress test with nuclear imaging and without? With 95%; Without 80-85%
What are the major coronary risk factors a person not change? Family History - Diabetes Mellitus (Type I) - Gender
What raises your family history risk factors? MI or sudden death of male family before 55 or age 65 for women
What concerning diabetes mellitus raises your risk factor? DM increases risk of artery damage
What are the risk factors related to gender? Men > 45 years old; Women 55 years of premature menopause without estrogen replacement therpy
Classic EKG finding for a person with ischemia is what? ST depression
Classic EKG finding for a person with injury is what? ST elevation
If you see ST elevation of an EKG during a stress test, what would you do and why? Stop the test; You are past ischemia and in the zone of injury and that is the intital stages of someone having a heart attack
Normal 'J' point deviation is what? 1 box (1mm) above the base line or 1/2 (.5mm) below the base line
If the 'J' point is 1 box or more below the base line, what is it a sign of? Ischemia
What are the three kinds of angina? Stable; - Unstable - Variant
Define stable angina - 'Predictable' chest pain; (Present at determined workloads)
Define unstable angina - 'Unpredictable' chest pain; (Present at rest)
Define variant angina - Caused by coronary artery spasm (Also known as Prinzmetal's angina)
What does exercise stress tests evaluate? the hearts response during physical exertion to increased oxygen demand
What is the value of one met? 5 mL of oxygen per kg
Indication - Evaluation of symptoms - Is chest pain of cardiac origin? Other symptoms include syncope, dyspnea & palpitations
Indication - Detection of ischemia - ID of low, intermediate or high risk patients; Evaluation of severity of CAD; Evaluation after MI, PTCA or CABG
Indication - Evaluation of dysrhythmia - Evaluate arrhythmia; Induce arrhythmia
Indication - Efficacy of pharmacological therapy - Determine which medications to use (anti-anginal, anti-hypertensive, anti-arrhythmic); Assess effects of therapy
Indication - Evaluation of cardiovascular functional capacity - Measurement of maximal O2 uptake; Classification of physical fitness; Assessment for exercise training
What are the risks associated with exercise testing? Risk of death during or right after an exercise test is < 0.01%; - Risk of MI during or immediately after an exercise test is < 0.04%; - The risk of a complication requiring hospitalzation (Including MIs) is approximately 0.1%
Define sensitivity - Ability of a test to detect abnormality.
Define specificity - Ability of a test to detect normals
What are the chances of a patient having an adverse effect from stress test? 1 in 1000 (This includes anything from hypertension to a heart attack)
What are the chances of a patient dying from a stress test? 1 in 10,000
What are the essential components of all emergency medical plans? All personnel should be trained in basic CPR & ACLS (Advanced Cardiac Life Support) - 2 Emergency numbers should be clearly posted; - 3 Emergency plans should be established & posted; - 4 Regular drills should be conducted quarterly for all personnel
What do you do for pre-test? 1 - 12-lead EKG while pt is supine (Make sure limb leads are on bone in truck area) 2 - Have pt hyperventilate
What are the Bruce treadmill graded exercise test protocols? 3 min stages (Every 3 mins both elevation & speed increase)
What are the Balke treadmill graded exercise test protocols? 1 min stages
How do you figure maximum heart rate? Subtract the patients age from 220 (Ex: 50 year old pt would be 170; 220 - 50 = 170)
How do figure target heart rate? Mulyply % set by doctor by maximum heart rate. (ex: 90% of 170 = 170 x .9)
Define sub maximal - Anything below 80% of maximum heart rate
Created by: ct program