Acute Failure And Chronic Failure

1305 Words Feb 7th, 2016 6 Pages
CHF occurs when the heart is no longer able to adequately pump blood causing a decrease in nutrients and oxygen to the body. The term CHF has widely been replaced by the terms acute failure and chronic failure because not all types of heart failure are accompanied by pulmonary congestion. However, in this pt’s case, she suffered from severe edema and fluid build-up in the lungs due to the failure. CHF is generally precipitated by other cardiac related conditions including, HTN, CAD, and past MIs, all of which are present in this pt’s history (Lewis, Heitkemper, Dirksen, Bucher, & Camera, 2014). The heart is responsible for moving the body’s blood, and is primarily composed of cardiac muscle. Similar to skeletal muscle, the cells are striated and contracts via sliding filaments, however, cardiac cells tend to be short, branched and can have up to two nuclei that are located in the middle of the cell. The cardiac cell’s volume is largely made of mitochondria (25-35% of the cell), making it very hard to tire the cells. The rest of the cell is composed of myofibrils which are made of sarcomeres. Sarcomeres are composed of actin and myosin fibers and have Z disks, A bands, and I bands (Marieb & Hoehn, 2013). The space between the cardiac cells is filled with the endomysium, which is a loose connective tissue that contain a large number of capillaries and attach to the cardiac skeleton, giving the cells a structure to apply force against when they contract. Because the cardiac…

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