Mov 470 Ch 18 CHD

Mov 470 Ch 18 CHD - Coronary Heart Disease Chapter 18...

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Coronary Heart Disease Chapter 18
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Myocardial Infarction Lack of blood flow to the cardiac muscle in which function can not be sustained Region where there is a lack of flow will turn brown/blue (like a bruise) Tissue will die within a couple hours if not treated Ethrosclerosis - plaque build up Ischemic Heart Disease – Insufficient coronary blood flow. Heart is not pumping
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Primary Cause of CHD? Significant advances made in earlier detection, prevention, and treatment of CHD Exercise testing contributes to functional assessments, diagnosis, prognosis and clinical management Benefits of exercise training: primary and secondary prevention, cardiac rehabilitation Reasons for: (lifestyle, lack of exercise, diet,
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History Prevelance Most frequent cause of death Men more than women 47% of CHD will die within one year People who tend to die suddenly had no previous symptoms (such as athletes) Genetic Factors High gene profile for Cardiac Disease
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Prevention and Therapy Focus is on a balance between myocardial oxygen supply and demand Factors influencing supply: Rate of plaque formation Formation of collateral arteries Redistribution of blood flow Improved clotting function Factors influencing demand: Activity level
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Exercise Capacity of CHD Patients Parameters include: genetics, gender, age, physical training status, and the amount of myocardial dysfunction Same as regular adult. .just on the low end looking at their capabilities Location and damage of MI, blood supply Will have an impact on exercise tolerance Time since MI Under 70 years old 8-12 weeks
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Responses to Dynamic Exercise The magnitude of impaired cardiovascular adjustment to exercise depends on disease severity Most display reduced work tolerance due to diminished peak SV and HR Impaired left venticular response to exercise BP can still be the same Major decrements in work capacity in patients with normal hemodynamics at rest is due to effort- induced ischemia Lack of correlation between coronary anatomy and exercise performance
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Continued… New York Heart Assoc. (NYHA) Classifications of heart disease patients Class I - NO symptoms
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Mov 470 Ch 18 CHD - Coronary Heart Disease Chapter 18...

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