Henson Formula Calculator
Clinical Small Bowel Length Estimation for Short Bowel Syndrome
Estimated Remaining Small Bowel Length
About the Henson Formula
The Henson formula is used primarily in clinical gastroenterology to estimate the remaining small bowel length in patients who have undergone significant resections. By measuring the distance from a fixed point (teeth/nose) to the end of the functional bowel and subtracting the average distance of the upper gastrointestinal tract (esophagus and stomach), clinicians can approximate the absorptive capacity of the patient.
| Measurement Starting Point: | |
| Total Distance to Stoma/End: | |
| Distance to Ligament of Treitz: | |
| Patient Height: |
| Remaining Small Bowel Length: | |
| Clinical Interpretation: |
Calculated using the Henson Formula. These measurements are clinical estimates and should be correlated with operative reports and radiographic findings. Small bowel length <100cm often indicates a risk for malabsorption.