Final answer:
CHA2DS2Vasc is a scoring system used in atrial fibrillation to assess the risk of stroke. The different types of direct oral anticoagulants used in Afib, along with their doses, are apixaban, dabigatran, edoxaban, and rivaroxaban.
Step-by-step explanation:
CHA2DS2Vasc:
CHA2DS2Vasc is a scoring system used in atrial fibrillation (Afib) to assess the risk of stroke in patients. It stands for Congestive heart failure, Hypertension, Age ≥75 years, Diabetes mellitus, Stroke/transient ischemic attack (TIA), Vascular disease, Age 65-74 years, Sex category (i.e., female gender). Each component of the CHA2DS2Vasc score is assigned a certain number of points, and the total score helps determine whether anticoagulation therapy is needed.
Direct Oral Anticoagulants (DOACs):
DOACs are used in Afib to prevent stroke and blood clots. There are four commonly used DOACs: apixaban, dabigatran, edoxaban, and rivaroxaban. The recommended doses vary depending on the specific DOAC and the patient's kidney function. For example, apixaban is typically prescribed at a dose of 5 mg twice daily, while dabigatran is prescribed at a dose of 150 mg twice daily for most patients.