Seroma is known as the accumulation of serum in specific body parts after a person undergoes surgery. The serum can be defined as the clear or yellowish fluid found inside the seroma; it is made up of plasma as well as other cells that come from various blood vessels which become damaged while the surgery is ongoing.It is characterized as a small/ big lump depending on the amount of fluid encased in it.he serum can be defined as the clear or yellowish fluid found inside the seroma; it is made up of plasma as well as other cells that come from various blood vessels which become damaged while the surgery is ongoing. It is characterized as a small/ big lump depending on the amount of fluid encased in it.
Steps. 1  1. Sit up tall. Push your hips as far back as they can go in the chair. 2  2. Sit close to your keyboard. Position it so that it is directly in front of your body. 3  3. Adjust the keyboard height. Make sure your shoulders are relaxed, your elbows are in a slightly open position, and your wrists and hands are straight.
1 When you sit in the chair the seat pan should be at least one inch wider than your hips and thighs on either side. 2  The seat pan should not be too long for your legs otherwise it will either catch you behind the knees or it will prevent you from leaning fully back against the lumbar support. The seat pan should not be too long for your legs otherwise it will either catch you behind the knees or it will prevent you from leaning fully back against the lumbar support. 2  Most ergonomic chairs have a seat pan with a waterfall front that prevents the seat from catching you behind the knees.