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7 Cards in this Set
- Front
- Back
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Define CHF and list three causes of the disorder
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CHF is when the heart loses the ability to pump enough blood to body tissues for the organs to function properly. This can be caused by hypertension, alcoholism, coronary artery disease, or other heart diseases
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Describe the symptoms of CHF
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some symptoms can be
-shortness of breath -swelling -fatigue -even sudden death |
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Describe the effects of CHF on the left ventricle
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bnormally high blood pressure increases the amount of work the left ventricle has to do to pump blood out to the circulatory system. Over time, this greater workload can damage and weaken the heart, leading to heart failure.
if left ventricle fails then fluid starts to back up and pool in the lungs (pulmonary edema) making breathing difficult |
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Describe the effects of CHF on the systemic arterial pressure
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causes hypertension, which is an increase in systemic arterial pressure
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Describe the effects of CHF on the
exchange of substance at systemic capillaries |
increases pressure at systemic capillaries, which makes it so substances are retained by the kidneys and liver
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describe 3 neg feedback loops to compensate CHF on body systems
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1) by giving someone a diuretic it will help eliminate excess salt and water by increasing urination... once enough salt and water is urinated out they will stop.
2)beta blockers, ACE inhibitors and calcium channel blockers lower BP by expanding blood vessels makes it easier for blood to move through them 3 vasodilators act on bvs to compensate high volume, which normalizes rate of flow |
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Describe the spiraling events that occur in the cardiovascular,
pulmonary, nervous, and urinary systems that lead to death when CHF becomes decompensated. |
cardiovascular: can cause myocardial infarction ... makes the heart swell and become larger to compensate for the lack of flow.
pulmonary: causes pulmonary edema nervous: causes the sympathetic nervous system to make the heart beat faster. urinary: unable to empty urinary bladder |
