Table 3 - Summary of manometric findings in selected esophageal motor disorders
From the following article
W.G. Paterson, Raj K. Goyal and Fortunée Irene Habib
GI Motility online (2006)
doi:10.1038/gimo20
| Motor disorder | Manometric abnormality |
|---|---|
| Achalasia | Absent, incomplete, or abnormally timed LES relaxation
Absent peristalsis May have elevated resting LES and intraesophageal pressures |
| Diffuse esophageal spasm | >20% of swallows result in simultaneous contractions
May have multipeaked and/or prolonged contractions Amplitude of the contractions may be increased, normal, or decreased |
| Hypertensive peristalsis (nutcracker esophagus) | Peristaltic contractions of increased amplitude (>180 mmHg) and/or increased duration (>8 sec) |
| Hypertensive LES | Increased resting LES pressure (>40 mm Hg above intragastric pressure) |
| Hypotensive peristaltic contractions (ineffective peristalsis) | Decreased amplitude (<30 mmHg) peristaltic or nonperistaltic contractions in distal esophagus with  30% of wet swallows
With or without hypotensive LES |
| Hypotensive LES and increased frequency of TLESR | LES pressure <10 mmHg
TLESRs cannot be evaluated by usual manometric studies |
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