They do not apply to people with congenital heart disease precipitating atrial fibrillation. Finding more information and committee details To find NICE guidance on related topics, including guidance in development, see the NICE webpage on heart rhythm conditions. For full details of the evidence and the guideline committee's discussions, see the evidence reviews. You can also find information about how the guideline was developed, including details of the committee. NICE has produced tools and resources to help you put this guideline into practice. For general help and advice on putting our guidelines into practice, see resources to help you put NICE guidance into practice. Update information 30 June 2021: We further corrected recommendation 1.2.2 on using the ORBIT score to assess bleeding risk to reinstate the link to the previous calculation tool, which was amended in error on 10 June. The tool includes the full criteria, including options for reduced haemoglobin and reduced haematocrit which are available once the patient's sex has been selected. 10 June 2021: We amended recommendation 1.2.2 on using the ORBIT score to assess bleeding risk so that it links to a calculation tool that includes the full list of criteria, including reduced haemoglobin, reduced haematocrit and history of anaemia. We deleted a paragraph of text from the rationale and impact section for recommendation 1.8.3 that was included incorrectly. April 2021: We have reviewed the evidence and made new recommendations on diagnosis and assessment, assessment of stroke and bleeding risks, preventing stroke, rate and rhythm control, preventing recurrence, and preventing and managing postoperative atrial fibrillation. These recommendations are marked [2021]. Recommendations marked [2014] and [2006] last had an evidence review in 2014 and 2006 respectively. 