Question: A 60-year-old woman, diagnosed with diabetes mellitus type 2 and hypertension, consults for palpitations of weeks of evolution. Provides an electrocardiogram performed a week ago in which he is in atrial fibrillation with an average ventricular rate of 70 beats / min. In the physical examination and in a new electrocardiogram performed in consultation is in sinus rhythm. Is it necessary to anticoagulate it chronically? 
 Options:  <1> It is not necessary to anticoagulate because it has a paroxysmal atrial fibrillation and is not currently in atrial fibrillation. <2> It is not necessary to anticoagulate because it is less than 75 years old and has not had a previous stroke. <3> You must be chronically anticoagulated because you have a CHADS of 2 and a CHADS-VASc of 3. <4> Anticoagulation is not necessary, but antiaggregation with acetylsalicylic acid may be prescribed. <5> Must be anticoagulated only with subcutaneous low molecular weight heparin when in atrial fibrillation.
3