Purpose of Review <p>Small bowel enterectomy is a commonly performed procedure for a variety of etiologies but the term itself is relatively nebulous with regard to the extent of the enterectomy. Management of patients following large enterectomies is dependent on the details of the amount of bowel remaining. The purpose of this review is to examine the evidence and recommendations around performing these critical measurements.</p> Recent Findings <p>Short segmental intestinal resections in the absence of post-operative complication are generally well tolerated with minimal long term nutritional sequela. Given the primary function of the small bowel lies in nutrient and fluid resorption, extensive resections can result in catastrophic consequences often leading to short bowel syndrome (SBS) and complete dependence on home parenteral nutrition (HPN). Data regarding surgeon practice in documenting the extent of enterectomy are sparse and there is no standardized approach to measurement. Following extensive enterectomy, remnant bowel length is an important determinant of long-term outcome and practice in documenting this variable is also unavailable. The recent AGA clinical update on SBS first best practice recommendation is to thoroughly describe the remaining anatomy for the purposes of future management of SBS.</p> Summary <p>This review summarizes what is known about the measurement of small bowel remaining following enterectomy. Because of the need for this documentation for coverage of HPN, which in many cases of SBS patients is life-sustaining, we advocate for surgeons to include both the amount of bowel resected and the estimated remaining in their operative documentation.</p>