A nurse is caring for four patients. After reviewing today's laboratory results, which patient should the nurse assess first?

Patient with a prothrombin time (PT) of 28 seconds

Patient with a platelet count of 128,000/mm³ (128 x 10⁹/L)

Patient with an international normalized ratio (INR) of 2.8

Patient with a red blood cell count of 5.1 million/mcL (5.1 x 10¹²/L)