Temperature and pulse oximetry should be employed to aid in determining the viability of the digit. A temperature drop of 3.6° Fahrenheit or an absolute temperature of 86° Fahrenheit mandates a reexploration of the anastomoses. Meticulous control of the blood pressure is warranted; hypotension will influence perfusion, and hypertension may compromise the vascular anastomosis. Vasoconstrictors should not be used to maintain the blood pressure unless absolutely necessary. The surgical team should be alerted on issues pertaining to extreme changes in these parameters (Beasley, Aston, Bartlett, Gurtner, & Spear, 2007).