Inclusion Criteria:

1. Female patient who are ≥ 18 and ≤ 80 years of age.

2. Patient with diagnosis of breast cancer.

3. Patient scheduled for modified radical mastectomy or lumpectomy with axillary node
dissection

4. Patient scheduled for one of the above listed surgeries with or without sentinel,
partial, or complete axillary lymph node dissection

5. Patients scheduled for one of the aforementioned surgeries with or without immediate
or delayed reconstruction.

Exclusion Criteria:

1. Pre-existing peripheral neuropathy

2. Pre-existing chronic pain

3. Bilateral procedure

4. Previous breast surgery, except biopsy

5. Inability to read, write or speak English.

6. Allergy to amide local anesthetics

7. Contraindications to paravertebral nerve block including, but not limited to severe
scoliosis of the spine, skin lesion overlying the block area, abnormal coagulation
studies (some of these may not be known until after informed consent is obtained)

8. Pregnancy

9. Emergency surgery

10. Previous recipients of peripheral nerve block.

11. Medical professional whose experience includes caring for patients who have had
peripheral nerve blocks.