Grade 1 (minor)Excision of lesion of skin; drainage of breast abscess
Grade 2 (intermediate)Primary repair of inguinal hernia; excision of varicose vein(s) of leg; tonsillectomy/adenotonsillectomy; knee arthroscopy
Grade 3 (major)Total abdominal hysterectomy; endoscopic resection of prostate; lumbar discectomy; thyroidectomy
Grade 4 (major+)Total joint replacement; lung operations; colonic resection; radical neck dissection; neurosurgery; cardiac surgery

From: Abbreviations and Glossary of Terms

Cover of Preoperative Tests
Preoperative Tests: The Use of Routine Preoperative Tests for Elective Surgery.
NICE Clinical Guidelines, No. 3.
National Collaborating Centre for Acute Care (UK).
Copyright © 2003, National Collaborating Centre for Acute Care.

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