Final answer:
Common vasoconstrictors added to spinal solutions include prostaglandins, products released by activated platelets, leukocytes, and endothelins. They help increase blood volume and pressure.
Step-by-step explanation:
Some common vasoconstrictors added to spinal solutions include prostaglandins, products released by activated platelets, leukocytes, and endothelins. Endothelins, such as angiotensin II, bradykinin, and epinephrine, are extremely powerful vasoconstrictors. These vasoconstrictors can help increase blood volume and pressure, making them useful in certain medical treatments.