- Antiseptics
- Antrectomy
- Aortic Aneurysm Repair
- Aortic Valve Replacement
- Appendectomy
- Arteriovenous Fistula
- Arthrography
- Arthroplasty
- Arthroscopic Surgery
- Artificial Sphincter Insertion
- Aseptic Technique
- Aspirin
- Autologous Blood Donation
- Axillary Dissection
- Balloon Valvuloplasty
- Bandages and Dressings
- Bankart Procedure
- Barbiturates
- Barium Enema
- Bedsores
- Biliary Stenting
- Bispectral Index
- Bladder Augmentation
- Blepharoplasty
- Blood Donation and Registry
- Blood Pressure Measurement
- Blood Salvage
- Bloodless Surgery
- Bone Grafting
- Bone Marrow Aspiration and Biopsy
