Upper esophageal sphincter augmentation reduces pharyngeal reflux in nasogastric tube-fed patients

OBJECTIVES/HYPOTHESIS

Aspiration of gastric refluxate is one of the most commonly observed complications among long-term nasogastric tube (NGT) fed patients. The upper esophageal sphincter (UES) pressure barrier is the main defense mechanism against pharyngeal reflux of gastric contents. Our objective was to investigate the efficacy and safety of the UES assist device (UES-AD) in preventing gastric reflux through the UES in long-term NGT-fed patients.

STUDY DESIGN

Self-Controlled Case series.

METHODS

We studied 10 patients (mean age = 90.6 ± 3.4 years, four females) with dysphagia caused by stroke or dementia who were fed for 0.5 to 5 years (median = 3 years) by NGT. External pressures of 20 to 30 mm Hg were applied by using a handmade UES-AD, which was started 2 hours after the beginning of NGT infusion and was alternated between periods of 2 hours on and 2 hours off, for a total of 12 hours. Placement of the impedance sensors within the UES was guided by high-resolution manometry. Trans-UES and intraesophageal reflux events were recorded by using 24-hour combined pH-impedance measurements.

RESULTS

No aspiration pneumonia events were noted in the period 1 month before or during the study in any of the cohort. Baseline UES pressure averaged 17.5 ± 9.4 mm Hg and was increased to 38.9 ± 11.9mm Hg after application of the UES-AD. Overall frequency of trans-UES reflux decreased significantly with the UES-AD compared to without (0.8 ± 0.9 vs. 3.3 ± 2.8, P < .05 for the 12-hour study period). There was no effect of the UES-AD on esophageal reflux events (7.4 ± 4.4 vs. 6.4 ± 3.0, P > .05).

CONCLUSIONS

UES-AD significantly decreases the number of trans-UES reflux events and can potentially reduce the aspiration risk associated with NGT feeding.

LEVEL OF EVIDENCE

4. Laryngoscope, 128:1310-1315, 2018.

Laparoscopic Nissen-Rossetti fundoplication is effective to control gastro-oesophageal and pharyngeal reflux detected using 24-hour oesophageal impedance and pH monitoring (MII-pH)

The study aims to evaluate, at medium- and long-term follow-up, the efficacy of Nissen-Rossetti fundoplication to control both gastro-oesophageal and pharyngeal reflux, detected with the use of 24-hour pH-multi-channel intra-luminal impedance. Of the 1000 patients who underwent Nissen-Rossetti fundoplication in our Division since 1972, the laparoscopic approach was adopted in 428 consecutive patients with gastro-oesophageal reflux disease. The study population consisted of patients from this group with one-year follow-up. Thirty-one patients had undergone pre-operative evaluation with pH-multi-channel intra-luminal impedance and were classified on the basis of clinical assessment into gastro-oesophageal, or pharyngeal reflux disease group. Pre-operative data are reported. Comparison between gastro-oesophageal reflux and pharyngeal reflux are extrapolated from pH-multi-channel intra-luminal impedance. No conversion to open surgery and no mortality occurred. A major complication occurred in 4 patients (1.1%) and led to a re-intervention in 3. An excellent outcome was reported in 92.9% of the patients at mean follow-up of 83.2 +/- 7 months. Instrumental outcomes are discussed. In conclusion, Nissen-Rossetti fundoplication provides excellent protection from gastro-oesophgeal and pharyngeal reflux. The use of pH-multi-channel intra-luminal impedance is suitable in patients candidate to anti-reflux surgery to detect non-acid reflux.