Informed consent is directly related to the principle of autonomy, because patients using autonomy
a)informed of the risks and capable of weighing the consequences of the decision. b)willing to make a decision without having all of the information first.
c)mentally incapable of understanding the risks of the decision.
d)under the age of 18, with permission from a parent to decide things on their own.

Explanation:

Informed consent refers to the process of getting permission from someone before doing a health intervention. This is used when a healthcare ask the patient for permission to continue with future processes, and to do so, they provide to patient all information needed to help him/her to make a decision towards their health. Through this process, the patient will be aware of all risks factors and success possibilities with the intervention. All these factors are offered to make a choice.

Therefore, patients using this principle of autonomy are informed of the risks and capable of weighing the consequences of the decision. The only case that this is not possible, it's when the patient don't have a good health state, making him impossible to decide, so a legal actor will take this decision for him.