Table 1.
FLIP protocol by catheter type
| Catheter configuration | ||
| Balloon length | EF-325: 8 cm | EF-322: 16 cm |
| Sensors | 16 sensors spaced 0.5 cm apart | 16 sensors spaced 1 cm apart |
| Protocol | ||
| Baseline placement | Balloon should span the EGJ with the EGJ waist in the mid-balloon length | Balloon should span the EGJ with 2–3 sensors distal to the EGJ |
| Baseline fill volume | 20 mL | 30 mL |
| Baseline wait time | 15 s | 15 s |
| Balloon fill protocol | Fill to 30 mL, 40 mL, 50 mL | Fill to 40 mL, 50 mL, 60 mL, 70 mLa |
| Wait time at each fill | 30 s | 60 s |
| Measurements | ||
| EGJ-DIb Diameterb Intrabag pressureb | EGJ-DIb Diameterb Intrabag pressureb Presence of RACs Presence of RRCs Presence of any contractility | |
EGJ, esophagogastric junction; EGJ-DI, EGJ-distensibility index; FLIP, functional lumen imaging probe; RAC, repetitive anterograde contraction; RRC, repetitive retrograde contraction.
a
Fill to 70 mL if intrabag pressures do not reach greater than 15–20 mm Hg or outflow obstruction is suspected.
b
Measured when the narrowest luminal diameter achieves maximal diameter.