My cardiologist is saying that it's not a big deal for me to be in afib 4% of the time with the longest lasting 3 hours 10 mins over a 2 week period. I haven't had a stroke or transient ischemic attack previously, don't have diabetes, hypertension or congestive heart failure. I'm male and 51 years old. Thus, my CHADS₂ and CHA₂DS₂-VASc scores are zero.