Answer:
If you are talking about websites, then yes. Website ending with .gov for government or .org are always reliable.
Explanation:
But if you aren't talking about websites, this question is questionable due to your experience of government issued information. But for the most part, government information are always reliable.
Atrial fibrillations the problem of irregular heartbeats, due to which clots can form inside the veins, and may lead to stroke, and ultimately, heart failure. An anticoagulant is given to such patients, to decrease the chances of occurrence of a heart attack due to blood clot formation.
Call 911 and if you know CPR Then do it but still call 911 just in case.
