A 78-year-old woman with a 6-year history of Alzheimer disease is brought to the clinic for a routine follow-up. Her family asks the physician about the natural progression of the disease to help them prepare for future care needs. The physician explains the typical chronological decline expected in this condition. Arrange the following clinical features in the correct chronological sequence that they typically appear during the natural course of Alzheimer disease, from earliest to latest.
- 1Mild short-term memory impairment and difficulty retaining newly learned information.
- 2Inability to independently manage finances and administer own medications.
- 3Inability to independently bathe, dress, and use the toilet.
- 4Severe motor rigidity, mutism, and complete physical dependence on caregivers.
Cevap
The correct chronological progression is: mild short-term memory impairment, followed by the loss of instrumental activities of daily living (such as managing finances), then the loss of basic activities of daily living (such as bathing), and finally severe motor rigidity and mutism.
Alzheimer disease has a characteristic progressive pattern of cognitive and functional decline. It begins with prominent short-term memory impairment due to early hippocampal involvement. As the disease spreads to the frontal and parietal association cortices, higher-level executive functions are impaired, leading to a loss of ability to perform complex tasks (Instrumental ADLs). With further progression, basic self-care abilities (Basic ADLs) are lost. Finally, in the end-stages, global cortical damage results in severe neurologic deficits, including mutism, motor rigidity, and a bedbound state.
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Anahtar Kavram
The classic chronological progression of Alzheimer disease: memory loss -> IADL impairment -> ADL impairment -> severe motor/language loss.