The nurse is caring for a client with atrial fibrillation who receives a prescription for warfarin. The international normalized ratio (INR) is 2.8. Which action should the nurse take?

Choice A reason: Giving the next scheduled dose without further assessment is not advisable. An INR of 2.8 is within the therapeutic range for many conditions treated with warfarin, but it is important to ensure that the INR is stable and not trending higher, which could increase the risk of bleeding. Choice B reason: Obtaining another blood sample might be necessary if there is suspicion of an error or if the INR is unexpectedly high or low. However, in this scenario, the INR is within the therapeutic range, so this action is not immediately necessary. Choice C reason: Monitoring for signs of bleeding is always important for clients on warfarin, but it does not address the immediate need to communicate with the healthcare provider about the current INR level and any potential adjustments to the medication. Choice D reason: Notifying the healthcare provider is the most appropriate action. The healthcare provider needs to be aware of the current INR level to make any necessary adjustments to the warfarin dosage and to provide further instructions on monitoring and follow-up.