Which motor function is commonly impaired in Parkinson's disease?

In Parkinson's disease, there are several motor functions that can be affected, including coordination, muscle strength, and balance. The nature of Parkinson's disease involves progressive neurodegeneration, particularly of dopamine-producing neurons in the substantia nigra region of the brain. This leads to characteristic motor symptoms such as bradykinesia (slowness of movement), rigidity, and tremor, all of which can adversely affect a person’s overall motor function.

Coordination can be severely affected as patients struggle with fine motor tasks and maintaining smooth, controlled movements. Muscle strength may also decline due to both the rigidity commonly associated with the disease and the associated decrease in physical activity over time. Balance is particularly problematic for individuals with Parkinson's, as they often experience postural instability, which increases the risk of falling.

Collectively, these impairments paint a comprehensive picture of how Parkinson's disease can disrupt multiple aspects of a person's motor function, justifying the selection of "all of the above" as the correct answer. Understanding this multifaceted impact is vital for nursing practice, as it highlights the need for a holistic approach to care for patients with Parkinson's disease, addressing coordination, muscle strength, and balance through rehabilitation and support strategies.