A 24-year-old man is brought to the Emergency Department by ambulance following a high-speed road traffic collision.

 He arrived in traumatic cardiac arrest after extrication at the scene.

 The trauma team leader, anaesthetist, and emergency physician commenced advanced resuscitation.

Massive transfusion was activated, bilateral thoracostomies performed, and the patient was intubated with return of spontaneous circulation (ROSC) after 12 minutes of advanced life support.

He remains ventilated, hypotensive, and requires ongoing transfusion and vasopressor support.

 You review the resuscitation bay staffing and notice several junior nurses assisting.

 Your charge nurse reminds you that there is a minimum staffing standard set by RCEM–FICM “Better Together” for such situations!

According to the better together: Collaborative working between Emergency and Critical Care “Better Together” Framework (2021), what is the minimum required number of  nurses per patient during the resuscitation of this patient?