Final answer:
Tachycardia, or an increased heart rate, is a manifestation of hypovolemia that can be observed in healthy pregnant patients after significant blood loss.
Step-by-step explanation:
Healthy pregnancy patients can lose 1200-1500 mL of blood before exhibiting signs and symptoms of hypovolemia. One of the ways this can manifest is through tachycardia, which is an increased heart rate. During hypovolemic shock, which may result from significant blood loss, patients often present with tachycardia, a weak thready pulse, and cool, clammy skin due to restricted blood flow. While hypotension (low blood pressure) is commonly associated with such blood loss, hypothermia (lowered body temperature) is not typically an immediate response to hypovolemia caused by hemorrhage and is therefore not the correct answer.