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13 Cards in this Set
- Front
- Back
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Organisms that have more cell replication ability will?
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live longer lives
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From age 50-70 visual acuity?
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decreases gradually
(after 70 it decreases more rapidly) |
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How is delirium different from dementia?
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Delirium is reversibe.
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What are the S/Sx of delirium in an elderly pt?
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Rapid onset, disorganized thinking, inability to maintain attention, cognitive impairment, & perceptual disturbance. It may cause sleep-wake cycle disturbances & altered psychomotor behaviour.
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Tx of delirium in the elderly pt;
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Identify & remove the cause.
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How is dementia different from delirium?
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Dementia has a gradual onset, progresses over years, disorientation occurs later in the dz, sleep-wake cycle reversed.
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What is cellular accumulation (alson known as infiltration)?
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Occurs in injured or normal cells. Is the abnormal accumulation of substances.(fluids, electrolytes, lipids, glycogen, calcium, uric acid, proteins, melanin, & bilirubin)
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What is Cellular swelling?
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(most common degenerative change) caused by the shift of extracellular H2O into cells.
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Explain cellular swelling due to hypoxic injury;
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ATP & ATPase permit Na to accumulate in the cell while K diffuses outward. The increased intracellular Na increases osmotic pressure, drawing H2O into the cell.
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What explain the damage that is done to the cell due to swelling;
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Cistern of the ER becomes distended, there is decrease mitochondrial function, & increse in permeability of the plasma intracellular membrane, there is leakage of lg milecules & enzymes which leads to severe injury & death.
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Intracellular lipid accumulation is associated with?
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Fatty infiltration
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What is fatty liver?
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A accumulation of intermediate metabolites. (is a typical finding in alcoholics)
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How does alcohol stimulate fat accumulation in the liver.
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High caloric content.
Inhibition of sveral degradation enzymes. Utilization of internal fat. Inhibition of protein synthesis. Inhibition of export of fat from the liver. |
