Table 1 Category scale for assessment of surgical field

0

No bleeding.

1

Slight bleeding– no suctioning of blood required.

2

Slight bleeding– occasional suctioning require. Surgical field not threatened.

3

Slight bleeding– frequent suctioning required. Bleeding threatens the surgical field a few seconds after suction is removed.

4

Moderate bleeding– frequent suctioning required. Bleeding threatens the surgical field directly after suction is removed.

5

Severe bleeding– constant suctioning required. Bleeding appears faster than can be removed by suction. Surgical field severely threatened and surgery not possible.