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.
Do not deduct Social Security taxes on gross wages exceeding this limit. The limit as of 2009 was $106,800 but is adjusted annually. Refer to IRS Publication 15 Circular E for the current figures. Calculate the Medicare tax by multiplying the gross pay by 1.45 percent.