Table 7.
Comparison of stimulation variables by different devices
| Device (total number of studies) |
Operation technique |
Electrode implanted layer |
Device active after n weeks |
Type of pulse |
Endoscopy |
Postop image |
||||||||||||||||||||
| L | O | E | NR | M | SM | Mus | SMus | SS | V | NR | 0 | ≤ 3 (1 ≤) | 4 ≤ | NR | Lo | T | NR | UC | Y | N | NR | XR | E-US | B | NR | |
| TANTALUS® (8) | 8 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 4 | 1 | 0 | 1 | 6 | 1 | 0 | 0 | 6 | 2 | 3 | 0 | 5 | 1 | 0 | 0 | 7 | |
| IGS-Transcend® (13) | 121 | 21 | 0 | 1 | 0 | 0 | 2 | 4 | 1 | 52 (14) | 0 | 43 | 93 | 0 | 0 | 9 | 3 (14) | 0 | 7 | 5 (14) | 0 | 5 | 15 | 15 | 7 (14) | |
| RGES (3) | 0 | 0 | 3 | 0 | 36 | 36 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 27 | 27 | 0 | 0 | 3 | 0 | 0 | 2 | 0 | 0 | 1 | |
| Vagal (3) | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 3 | |||||
| Pacing (4) | 21 | 21 | 2 | 0 | 26 | 16 | 2 | 0 | 0 | 0 | 2 | 0 | 1 | 1 | 28 | 18 | 1 | 1 | 4 | 0 | 0 | 2 | 0 | 0 | 2 | |
| Total (33) | 25 | 4 | 5 | 1 | 8 | 4 | 4 | 4 | 5 | 3 | 6 (14) | 5 | 9 | 16 | 2 | 4 | 12 | 10 (14) | 6 | 17 | 5 (14) | 8 | 10 | 1 | 1 | 20 (14) |
Two studies implanted leads either by laparoscopic or open approach;
Two studies reported “gastric wall”, but did not specify which particular layer;
One study activated its device after 3 or 4 wk, so each category was counted once;
No full text for LOSS trial, and this information was also not provided on another study, which reviewed this particular trial;
One study did both X-ray and endoscopic USS. Similarly another study did both X-ray and GI Barium test;
Implanted electrodes in mucosa and submucosa (3 studies in RGES; 1 study in Gastric Pacing);
One study carried out two different pulses;
One study carried out two different pulses. L: Laparoscopic; O: Open; E: Endoscopic; NR: Not reported; M: Mucosa; SM: Submucosa; Mus: Muscular; SMus: Seromuscular; SS: Subserosa; V: Vagal nerve; Lo: Long pulse; T: Train of short pulses; UC: Uncertain; Y: Yes; N: No; XR: X-ray; E-US: Endoscopic ultrasound scan; B: Gastrointestinal Barium test.