In emergency care for an open soft-tissue injury, which of the following should NOT be performed?

In the context of emergency care for an open soft-tissue injury, it's crucial to recognize that suturing is not typically performed by Emergency Medical Responders at the scene. This procedure requires a sterile environment, advanced skills, and specialized equipment that are not available in pre-hospital settings. Instead, Emergency Medical Responders focus on initial wound care and ensuring the patient's safety.

Cleaning the wound gently is a necessary step to reduce the risk of infection, while applying a sterile dressing helps protect the wound from contaminants. Controlling bleeding is a priority in managing any open injury and can be critical to the patient’s survivability.

Therefore, while controlling bleeding, cleaning the wound, and applying a sterile dressing are essential components of initial care for an open soft-tissue injury, suturing goes beyond the scope of practice for EMRs and should be left to professionals capable of performing it in a controlled clinical environment.