Palpate the superior aspect of the pectoralis muscle and inspect the surgical site for symmetry to rule out hematoma formation. The dressing should be inspected for bleeding and hematoma formation as well. Because the risk of pneumothorax is greater in the axillary approach or with the use of numbing intercostal blocks, monitoring oxygenation with a pulse oximeter and auscultation of the lungs should occur to determine unequal or decreased breath sounds. Chest tube setup and drainage equipment should be readily available in case of this rare issue (Alderman et al., 2009; Doherty, 2010).