Key Takeaways
- Clinical Bottom Line
- The Necessity of Ileal Evaluation
Clinical Bottom Line
| Intubation Step | Endoscopic Maneuver | Technical Purpose |
|---|---|---|
| Positioning | Locate the appendiceal orifice; orient the IC valve to the 6 o’clock position. | Provides the optimal mechanical vector for entry. |
| Deflection | Bury the scope tip precisely at the lower lip of the valve; apply maximal “UP” dial. | Hooks the lip to pry open the sphincteric closure. |
| Insufflation/Suction | Apply short bursts of suction upon entry. | Collapses the cecum, pulling the ileum directly over the scope tip. |
The Necessity of Ileal Evaluation
Intubation of the terminal ileum (TI) is a mandatory competency for high-quality diagnostic colonoscopy, particularly critical when screening for Inflammatory Bowel Disease, unexplained chronic diarrhea, or occult lower GI bleeding. Despite its importance, the sharp angulation and variable morphology of the ileocecal (IC) valve frequently frustrate novice and experienced endoscopists alike.
The “Hook and Pull” Technique
Attempting to simply “push” into the terminal ileum is rarely successful and often results in the scope violently retroflexing in the cecum or slipping back into the ascending colon. The optimized 2026 technique involves a controlled paradoxical movement: the endoscopist places the scope tip gently against the inferior lip of the valve, applies hard upward deflection to “hook” the lip, and then physically pulls the entire scope back while simultaneously applying mild suction. This maneuver effectively drags the ileum over the tip of the scope like a sleeve.
Clinical guidelines summarized by the Gastroscholar Research Team. Last updated: 2026. This article is intended for physicians.
