Final answer:
The concept of "frailty in old age" encompasses several underlying concepts, but a well-defined geriatric syndrome with validated clinical markers is not included.
Step-by-step explanation:
The concept of "frailty in old age" encompasses several underlying concepts, including:
- Progressive decline in organism reserves to be able to withstand a variety of stresses.
- Multiple interdependent organ systems progressing toward over failure with age and/or disease.
- Higher risk for major untoward events with medical interventions that are generally safe in younger patients.
However, the concept of frailty in old age does not involve a well-defined geriatric syndrome with a validated set of agreed-upon specific clinical markers. While there are specific markers that are commonly associated with frailty, there is no universally agreed-upon set of clinical markers.