Henry Ford Health System (HFHS) Critical Care Practice Exam 2026 - Free Critical Care Practice Questions and Study Guide

The primary use of a central venous catheter (CVC) in critically ill patients is to measure central venous pressure (CVP). Monitoring CVP provides critical information about a patient’s circulatory status and volume status, which is essential in managing fluid therapy, assessing cardiac function, and guiding treatment in critically ill scenarios.

CVCs are placed in large veins, typically the jugular or subclavian vein, allowing for accurate measurement of the pressure in the right atrium and providing insight into the patient’s hemodynamics. This is particularly useful in conditions such as shock, heart failure, and during fluid resuscitation, enabling healthcare providers to make informed decisions regarding fluid management and other therapeutic interventions.

While central venous catheters can also be used for obtaining blood samples, administering medications, and in some cases, parenteral nutrition, the measurement of central venous pressure is a key diagnostic function that directly informs critical care management and is not adequately achieved with other means. Therefore, the primary focus of CVCs in critically ill patients lies in their role in hemodynamic monitoring.