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21 Cards in this Set
- Front
- Back
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What are three factors influencing O2 demand?
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Wall tension, heart rate, and contractility
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What are 4 factors influencing O2 supply?
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Carrying capacity
Extraction efficiency Coronary flow Coronary resistance |
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What type of tests can be used to detect silent ischemia?
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EKG, coronary angiogram or thallium stress test (method for direct measure of coronary blood flow before and after a period of intensive exercise)
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(True/False) A damaged heart can regains full function?
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False. Damaged heart NEVER regains full function
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(True/False) Coronary blood flow is greatest during systole?
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False, it is greatest during diastole
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What is the only way for the heart to increase its oxygen supply?
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To increase blood flow
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Patients suffering coronary artery disease may exhibit what symptoms?
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pain,tachycardia, diaphoresis (sweating), nausea, may be no symptoms at all
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What is cardiac reserve?
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The work that the heart is able to perform beyond that required of it under normal circumstances.
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What is the cardiac reserve in young healthy individuals?
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400% of the cardiac output
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What are the different type of coronary artery diseases?
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angina pectoris, stable angina, unstable angina, variant angina, and silent ischemia
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What is the cause of stable angina?
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Physical activity or emotional stress
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How do you detect stable angina with a electrocardiogram?
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There's a temporary depression of the ST segment, which returns to normal at rest
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Is stable angina associated with permanent myocardial damage (Yes/No)?
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No
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What does unstable angina represents?
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A progression of stable angina
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How is unstable angina different from stable angina?
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The episodes of pain are increased in frequency and duration
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When does variant angina usually occurs?
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At rest and is often relieved by moderate activity
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How do you detect variant angina with a electrocardiogram?
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A temporary elevation of ST segment
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What do you call a coronary vasospasm without atherosclerosis?
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Prinzmetal's angina
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What do you call a coronary artery disease that does not show any symptoms?
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Silent ischemia
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Which gender is more likely to have silent ischemia (male/female)?
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Female
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How do you dectect silent ischemia with an electrocardiogram?
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ST segmental depression
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