 | Esophagus, Diffuse Esophageal Spasm |
Figure 3 : Manometric representation of normal esophageal peristalsis. Measurements are taken from multiple recording sites in the esophagus, including the upper esophageal sphincter and the lower esophageal sphincter (LES). After a wet swallow (WS), upper esophageal sphincter relaxation is followed almost immediately by prolonged LES relaxation. The primary peristaltic contraction wave is seen as an aborally progressing pressure peak. (From Dodds WJ: Esophagus-radiology. In Margulis AR, Burhenne HJ [eds]: Alimentary Tract Radiology, vol 1, 4th ed. St. Louis, CV Mosby, 1989, p 430.)
Primary esophageal peristalsis, swallowing with rapid wave of inhibition then slower wave of contraction, traverses esophagus in 6-8 seconds (Fig. 3, Fig. 4, Fig. 5)
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