All patients with AF should undergo a complete history and physical examination, electrocardiogram, echocardiogram, and basic laboratory investigations. Details are highlighted in Table 2. (Recommendation Strong, Quality Low)<br /><br />Other ancillary tests should be considered under specific circumstances. Details included in Table 4. (Recommendation Strong, Quality Low)<br /><br /><b>Values and preferences: </b> This recommendation places a high value on a comprehensive evaluation of patients with AF and a lower value on initial costs to the health care system.