What type of patient would you not give Methergine to and why?

You would not give Methergine to a patient with uncontrolled hypertension because it can cause a severe, life-threatening increase in blood pressure. Methergine is a vasoconstrictor, which means it causes blood vessels to narrow, which can lead to a dangerous increase in blood pressure. In patients with uncontrolled hypertension, the blood pressure is already high, and giving Methergine could cause a hypertensive crisis, which can be fatal.