What is the purpose of the PICOT question in evidence-based practice?

Note: Just answer these questions and utilized the attached articles as many as possible. Introduction
and conclusion paragraphs are not required in this assignment. Sources must be
published within the last 5 years, appropriate for the assignment criteria, and
relevant to nursing practice. Thanks.
1) What
is the purpose of the PICOT question in evidence-based practice?
2)
An example of the PICOT question: In non-anglophone patients, what is the effect of
communication barriers on health outcomes compared with non-anglophone patients
with additional resources? Is
this a well-formulated PICOT question? If not, explain and refine it if applicable.
3)
An example of the PICOT question: Among patients admitted to the medical-surgical unit (P), how is the
application of nursing activities such as patient 4 hourly turning, and use of
ripple matters (I) compared to not using these nursing interventions (C) leads
to the prevention of pressure Ulcers (0) within 3 months of hospitalization(T)?
Is
this a well-formulated PICOT question? If not, explain and refine it if applicable.
4)
Another example of the PICOT
question: In mechanically
ventilated patients with tracheostomy tubes, which tracheal suction system,
open or closed, is more effective in reducing respiration distress and anxiety
throughout the suctioning procedure? Is this a well-formulated PICOT question?
If not, explain and refine it if applicable.