Atrial flutter is an abnormality of the heart rhythm, resulting in a rapid and sometimes irregular heartbeat. Such abnormalities, whether in the rate or regularity of the heartbeat, are known as arrhythmias. The main danger of atrial flutter is that the heart does not pump blood well when it is beating too fast. When blood is not pumped well, vital organs, such as the heart and brain, may not get enough oxygen from the blood.
The range varies with the window casing. Aluminum windows are relatively common and have a life expectancy of about 15 to 20 years. They can cost $348 per window (figure 50% to 100% more for new construction windows). Other popular window options include vinyl (lasts between 20 to 40 years) and wood (lasts about 30 years).
Related Articles. Tech experts generally agree a computer should last anywhere between three to five years before needing to be replaced. Of course, this number is just a generalization and a number of factors play into lifespan, ranging from the computer's quality, care and room for upgrades. For small business owners, every new computer is an expense and an investment, one whose worth over time largely depends on how you use it and care for it.