What does IV stand for in medical terms?

In medical terms, IV stands for intravenous. This term specifically refers to the administration of substances directly into a vein, allowing for rapid absorption and effects in the body. This method is commonly used for delivering fluids, medications, and nutrients, particularly in situations requiring immediate treatment or when a patient cannot take medications orally.

Intravenous administration is essential in many acute care settings, such as hospitals, where quick and controlled delivery of drugs can significantly impact a patient's condition. The term itself derives from "intra," meaning within, and "venous," relating to veins.

The other options pertain to different medical concepts. Intravascular refers to something occurring within a blood vessel but does not specifically involve the direct administration process that intravenous does. Intra-abdominal indicates something located within the abdominal cavity, and intracardiac pertains to the interior of the heart. Therefore, these terms do not align with the specific definition and application of IV as intravenous does.