In an acute motor vehicle collision, what is the most immediate risk associated with a detected hemorrhage after lifting the liver during surgery?

In the context of an acute motor vehicle collision, the presence of hemorrhage after lifting the liver during surgery indicates significant blood loss. The most immediate risk associated with this situation is hypotension due to blood loss.

When a significant amount of blood is lost rapidly, the body struggles to maintain adequate blood pressure, leading to hypotension. This drop in blood pressure can result in inadequate perfusion of vital organs, which can cause immediate complications such as shock. The urgency of addressing hypotension is paramount in trauma cases, as it directly threatens the patient's life.

The other options, while relevant in a broader context of surgical complications, do not present as immediate risks as hypotension. For instance, ischemic injury to the liver or damage to surrounding organs may occur as complications but would not be the first concern in the presence of active hemorrhage. Infection post-surgery is also a concern but is typically a delayed complication rather than an immediate risk in the scenario described.