Esophageal manometry in horses, cows, and sheep during deglutition.
Abstract: Esophageal pressure events during deglutition were evaluated in healthy adult animals (6 horses, 6 cattle, and 5 sheep), using a 3-side hole catheter assembly perfused with water by use of a hydraulic-capillary infusion system. The peak postdeglutition pressure, contraction time, and contraction length were determined for the cranial and caudal esophageal sphincter regions and for each functionally different region within the body of the esophagus. The percentage of deglutitions in which relaxation developed at the sphincter regions and the propagation speed (velocity at which pressure waves traversed the esophagus) for the regions within the body of the esophagus also were determined. Mean (+/- SEM) resting pressures within the cranial and caudal esophageal sphincter regions in the horse were 84.8 +/- 4.39 and 12.7 +/- 0.61 mm of Hg, respectively, with postdeglutition peaks of 208.0 +/- 4.78 and 100.0 +/- 1.06 mm of Hg, respectively. Peak postdeglutition pressure was 92.3 +/- 1.59 mm of Hg in the cranial two thirds of the esophageal body and 100.9 +/- 1.31 mm of Hg in the caudal third. Mean resting pressure of the cranial esophageal sphincter region in the cow was 82.0 +/- 7.81 mm of Hg, whereas that of the caudal esophageal sphincter region was 20.5 +/- 0.36 mm of Hg. The peak postdeglutition pressures for the cranial esophageal sphincter region, proximal portion of the esophageal body, caudal portion of the esophageal body, and caudal esophageal sphincter region in the bovine esophagus were 238.1 +/- 2.93, 105.4 +/- 1.97, 114.5 +/- 1.49, and 112.0 +/- 1.20 mm of Hg, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
Publication Date: 1987-04-01 PubMed ID: 3592352
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This research study investigates the pressure events in the esophagus of healthy adult horses, cows, and sheep during the act of swallowing, utilizing a water-perfused catheter assembly. Data was collected on multiple factors, including peak post-swallow pressure, contraction time and length, sphincter relaxation during swallowing, and pressure wave speed.
Methodology
- The study was conducted on a total of 17 healthy adult animals, which included 6 horses, 6 cows, and 5 sheep.
- A 3-side hole catheter assembly perfused with water by use of a hydraulic-capillary infusion system was used to evaluate pressure events in the esophagus during deglutition (swallowing).
- Measurements were taken for the cranial (upper) and caudal (lower) esophageal sphincter regions and for each functionally different region within the body of the esophagus.
Key Measurements
- The researchers determined the peak post-swallow pressure, contraction time, and contraction length for the sphincter regions and different regions within the esophageal body.
- The percentage of deglutitions (swallows) during which relaxation occurred at the sphincter regions was also recorded.
- The propagation speed, or the velocity at which the pressure waves traversed the esophagus, for the different regions in the esophageal body was further established.
Findings
- For horses, the mean resting pressures within the cranial and caudal esophageal sphincter regions were found to be 84.8 and 12.7 mm of Hg, respectively, with post-swallow peaks of 208.0 and 100.0 mm of Hg, respectively. The peak post-swallow pressure was around 92.3 mm of Hg in the cranial two-thirds of the esophageal body, while it was about 100.9 mm of Hg in the caudal third.
- In cows, the mean resting pressure for the cranial region was 82.0 mm of Hg, and for the caudal region, it was 20.5 mm of Hg. The peak post-swallow pressures were 238.1, 105.4, 114.5, and 112.0 mm of Hg for the cranial sphincter region, proximal portion of the esophageal body, caudal portion of the esophageal body, and caudal sphincter region, respectively.
- The research abstract ends at this point, and does not provide the findings regarding the sheep studied.
Cite This Article
APA
Clark ES, Morris DD, Whitlock RH.
(1987).
Esophageal manometry in horses, cows, and sheep during deglutition.
Am J Vet Res, 48(4), 547-551.
Publication
Researcher Affiliations
MeSH Terms
- Animals
- Cattle / physiology
- Deglutition
- Esophagus / physiology
- Female
- Horses / physiology
- Male
- Manometry / veterinary
- Pressure
- Sheep / physiology
Citations
This article has been cited 1 times.- Chiocchetti R, Giancola F, Mazzoni M, Sorteni C, Romagnoli N, Pietra M. Excitatory and inhibitory enteric innervation of horse lower esophageal sphincter.. Histochem Cell Biol 2015 Jun;143(6):625-35.
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