A 45-year-old male patient has been involved in a motorcycle accident with suspected internal bleeding. His blood pressure is 80/50 mmHg, heart rate is 130 bpm, and he is diaphoretic. After securing the airway, what is the next best step in managing his hypovolemic shock?
Monitor urine output
Provide blood products
Administer vasopressors
Initiate fluid resuscitation with crystalloids