Effect of Pectoralis Block on Analgesia After Simple Mastectomy

The pectoralis block, including pecs I and II block, is a novel technique first described in
2011 as an alternative to paravertebral blockade for analgesia following breast surgery. The
concept involves injecting local anesthetic near the coracoid process in the fascial planes
between both the pectoralis major and minor muscles (pecs I), and the fascial plane between
the pectoralis minor and serratus anterior muscles (pecs II). This is a prospective,
double-blinded, randomized controlled trial in subjects undergoing mastectomy under general
anesthesia. The research goal is to determine the efficacy of the pectoralis block compared
to placebo in improving quality of recovery following mastectomy.

Inclusion Criteria:

- ASA 1, 2, and 3 patients (According to ASA classification of comorbid conditions and
general health)

- Patients undergoing simple mastectomy

Exclusion Criteria:

- -Patient Refusal

- Allergy to local anesthetics

- Inability to communicate in English

- Use of 8 mg morphine equivalents or greater currently and for a period of longer then
2 weeks prior to surgery

- Existing nerve injuries or sensory deficits

- Conversion to anesthesia via an endotracheal tube