b. The instruments are arranged on the back table in a manner as shown in
Figure 3-21. The ringed instruments are placed on the rolled towel with the small
instruments to the front. The retractors are in the rear center of the table with the 4 x 8's
and radiopaque sponges in the front center. The emesis basin is placed at the rear of
the table and will receive the suture packets. The needle rack is placed on a folded
towel in front of the basin.
Figure 3-21. Instruments arranged on the back table
3-18.
ARRANGEMENT OF THE INSTRUMENTS ON THE MAYO TRAY
a. The instruments that are placed on the Mayo tray are those that will be used
for making and opening the initial incision. These are the instruments that the surgeon
will use at the beginning of the procedure.
b. For each basic procedure, a definite class of instruments of suitable size,
shape, strength, and function is required. For example: knives and scissors are for
cutting or dissecting; tissue forceps are for grasping and holding; hemostatic forceps
and clamps are for clamping and occluding (closure); retractors are for exposing; needle
holders are for suturing; and sponges are for absorbing fluid and blood. Figure 3-22
illustrates a Mayo stand with instruments prior to surgery. The scrub arranges the
instruments on the Mayo tray for the initial incision. He must not overload the tray
initially since additional supplies and instruments can be added to the Mayo tray as the
operation progresses. Note how the instruments are placed on the rolled towel in
Figure 3-22.
MD0935
3-19