INR Level for TEE Procedure

A 62-year-old patient with chronic heart failure is scheduled for a transesophageal echocardiogram (TEE) to evaluate left atrial thrombus before catheter ablation. Prior to the procedure, the nurse must prepare the patient appropriately. During the education session, the nurse informs the patient about the need for temporary cessation of anticoagulation therapy. The patient has been taking warfarin with an INR of 2.5 prior to the appointment. To ensure the patient's safety and minimize the risk of potential complications, the nurse will also need to monitor certain parameters.

Before the procedure, the nurse should confirm that the patient's INR level falls within the acceptable range, which is __________.