What is the significance of an INR of 1.8 for a client taking warfarin?

An INR (International Normalized Ratio) of 1.8 for a client taking warfarin indicates that the client is not adequately anticoagulated, as the therapeutic range for most conditions requiring anticoagulation typically falls between 2.0 and 3.0. While levels can vary based on the specific indication for warfarin therapy, an INR higher than the normal range is generally desired for most indications to effectively prevent thromboembolic events.

A value of 1.8 suggests that the anticoagulation effect of warfarin is suboptimal, which may increase the risk of thrombus formation. Therefore, follow-up care is essential to reassess the patient's dosage, monitoring needs, and the effectiveness of the warfarin therapy. This could include dosage adjustments or additional assessments to ensure that the patient is within the appropriate therapeutic range.

Other statements may misinterpret the significance of this INR value. Since 1.8 does not indicate adequate anticoagulation nor does it fall within the commonly considered normal limits, nor does it suggest an increase in dosage without further clinical context, the emphasis on requiring follow-up care is the most pertinent aspect for management.