The result is a fast and irregular heart rhythm. The heart rate in atrial fibrillation may range from 100 to 175 beats a minute. The normal range for a heart rate is 60 to 100 beats a minute. Abnormalities or damage to the heart's structure are the most common cause of atrial fibrillation.
(Beyond the Basics).) Dialysis is typically needed when approximately 90 percent or more of kidney function is lost. Kidney function can be lost rapidly (acute renal failure or acute kidney injury) or over months or years (chronic kidney disease).
You may need a blood urea nitrogen test: 1  If your doctor suspects that you have kidney damage. 2  If your kidney function needs to be evaluated. 3  To help determine the effectiveness of dialysis treatment if you're receiving hemodialysis or peritoneal dialysis.