What is the heart rate of someone who has lost 2000cc of blood?

In cases of significant blood loss, such as losing 2000cc (2 liters) of blood, the body typically responds with compensatory mechanisms to maintain perfusion to vital organs. One of the primary responses is an increase in heart rate.

When blood volume decreases considerably, the heart beats faster in an attempt to maintain adequate cardiac output. When someone loses around 2000cc of blood, which constitutes a substantial reduction in overall blood volume, the heart rate often increases to 120 beats per minute or higher.

This compensatory tachycardia reflects the body's urgent need to supply oxygen to organs and tissues that are at risk due to the reduced blood volume. As the situation worsens, particularly if the blood loss continues, the heart rate can escalate even further, potentially reaching 140 beats per minute or more in response to the decreasing perfusion.

Given these physiological responses, the correct choice indicating a heart rate of 120+ bpm aligns with what is typically observed in patients experiencing significant blood loss.