1 Normal inferior vena cava diameter: 1.5 to 2.5 cm. 2  Less than 50% change in diameter with normal respiration or with a sniff. 3  Elevated Right Atrial Pressure: 4  Dilated inferior vena cava. 5  Dilated hepatic veins. 6  Little or no respiratory change in caval diameter.
Depending on how much money you earn, you may not pay Social Security taxes on your entire income. That's because a cap is set each year on the amount of income subject to Social Security taxes. Last year, that limit was $118,500, but in 2017, it jumped to $127,200.
We call this annual limit the contribution and benefit base. For earnings in 2015, this base is $118,500. The OASDI tax rate for wages paid in 2015 is set by statute at 6.2 percent for employees and employers, each.ocial Security's Old-Age, Survivors, and Disability Insurance (OASDI) program limits the amount of earnings subject to taxation for a given year. The same annual limit also applies when those earnings are used in a benefit computation. This limit changes each year with changes in the national average wage index.