American Board of Surgery Qualifying Exam (ABS QE) Practice Test

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What percentage of patients over 70 years old are expected to experience delirium?

The correct answer is: 15%

In patients over the age of 70, the incidence of delirium can be quite significant due to various factors such as underlying medical conditions, medication effects, and the stress related to hospitalization or surgical procedures. Research indicates that the expected occurrence of delirium in this age group is around 15%, making it an important consideration in the management of older patients. Understanding that delirium is common in elderly populations is critical for healthcare providers, as early recognition and interventions can lead to better outcomes. The contributors to this high incidence include cognitive impairment, dehydration, infections, and certain medications, all of which can increase vulnerability in older adults. Hence, a percentage around 15% accurately reflects the prevalence of delirium in this demographic.