Central Venous Pressure Normal Range

A 33-year-old male patient is admitted to the intensive care unit following a motor vehicle accident. Initial assessment reveals significant blood loss and a blood pressure of 75/40 mmHg. The healthcare provider orders a central venous pressure (CVP) measurement to assess the pre-load status of the heart. The nurse notes that the CVP should normally be within the range of ___ mmHg to indicate adequate venous return.