Final answer:
Patients with a prolonged history of alcohol abuse are prone to reduced blood clotting, which can worsen internal bleeding.
Step-by-step explanation:
When caring for a patient with a prolonged history of alcohol abuse who has fallen from a second-story balcony and has a blood pressure of 80/60 mm Hg, a heart rate of 120 beats/min, and cool and pale skin, the EMT should recall that reduced blood clotting worsens internal bleeding. Patients with alcoholism are prone to reduced blood clotting due to liver damage caused by alcohol abuse. This increases the risk of internal bleeding and can worsen the patient's condition.