KNR 180 Lecture 17: Chapter 17

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Illinois State University
Kinesiology and Recreation
KNR 180

• The level of responsiveness indicates how well the brain is functioning. • Heart attack— one or more of the arteries delivering blood to the heart becomes blocked. • Blood supply to the heart is cut off • Also called myocardial infarction (MI) • Cardiac arrest— either the heart stops beating, or the heart’s lower chambers suddenly develop a rapid irregular rhythm causing the ventricles to quiver rather than contract. • If the person takes medication for a heart condition, help him or her take it. • If alert, able to swallow, and not allergic, help person take aspirin. • Monitor breathing. • Chest pain that can result when blood flow to the heart muscle is restricted, but not completely blocked. • Coronary arteries become narrow. • Arteries cannot carry sufficient blood to meet the demands during: • Physical exertion • Excitement • Emotional upset • Eating of a heavy meal • Extreme hot or cold temperature exposure • Cigarette smoking • Occurs when there is a sudden interruption of blood flow to the brain • Can be thought of as a “brain attack” • Occurs when arteries in the brain rupture or become blocked • Effects are permanent • Ischemic • Occurs when blood vessels become narrowed or clogged with plaque • Hemorrhagic • Occurs when a blood vessel ruptures in or near the brain • Transient ischemic attack (TIA) • Occurs when a part of the brain is deprived of oxygen-rich blood long enough to cause symptoms but not long enough to cause permanent damage • Resolves completely within 12 hours • Chronic lung disease that inflames and narrows the airways • Causes recurring periods of wheezing, chest tightness, shortness of breath, and coughing • Fast, deep breathing • Common during emotional distress • Also caused by: • Untreated diabetes • Severe shock • Certain poisons • Brain swelling • High altitude • COPD is a broad term applied to: • Emphysema • Chronic bronchitis • Related lung diseases • Most common factor: cigarette smoking • Most commonly diagnosed: older than 60 years • Sudden brief loss of responsiveness not associated with a head injury • Also called syncope or psychogenic shock • Most fainting episodes are associated with decreased blood flow. • Decreased blood flow can be caused by: • Slow heart rate • Heart rhythm disturb
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