A 45-year-old male patient is involved in a motor vehicle collision and presents with signs of hypovolemic shock, including a rapid, weak pulse and low blood pressure. What is the most appropriate initial fluid resuscitation strategy for this patient?
Administration of colloids, such as albumin
Administration of hypertonic saline
Administration of packed red blood cells
Administration of isotonic crystalloids, such as normal saline or lactated Ringer's solution