Which blood work must be obtained prior to a cardiac catheterization?

Prior to a cardiac catheterization, obtaining a complete blood count (CBC) with differential is essential. This test provides critical information about the patient’s overall health, specifically focusing on the levels of red blood cells, white blood cells, and platelets. The CBC helps in assessing the patient’s hemoglobin levels, which are vital in determining if the patient has enough red blood cells to safely undergo the procedure and recover afterward.

In addition, a differential count can highlight any ongoing infections or other hematologic abnormalities that may increase procedural risk. Since cardiac catheterization can involve the use of contrast agents and has the potential to provoke bleeding, understanding the patient's blood status through a CBC is a key safety measure that aids the healthcare team in making informed decisions regarding the procedure.

While the other blood work options have their importance in different clinical contexts, they do not assess the immediate risks associated with the procedure as thoroughly as a CBC does, particularly concerning the patient's hematologic status and readiness for the catheterization.