Esophageal Transit Time
Esophageal Transit Time - Related Videos
04:19
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This manuscript describes the surgical technique for robotic enucleation of an esophageal leiomyoma, serving as a reference for similar cases.
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01:02
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When drugs are administered extravascularly, a comprehensive evaluation through noncompartmental analysis becomes imperative. This analytical approach considers various parameters that play a crucial role in understanding the pharmacokinetics of these drugs. One of the key parameters is the mean transit time (MTT), which refers to the total duration required for drug molecules to transit through the body. MTT is determined by calculating the ratio of the area under the moment curve to the area...
02:31
Phase Transitions
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Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to occupy...
06:48
High-throughput Measurement of Gut Transit Time Using Larval Zebrafish
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Cited by 12 •
2018
The goal of this protocol is to measure the transit time of fluorescently labeled food through the gut of larval zebrafish in a high throughput fashion.
FAQs
Efficient passage depends on a coordinated sequence of peristaltic contractions that propels the swallowed bolus, while gravity can assist movement. The lower esophageal sphincter must relax as the bolus approaches the stomach; impaired coordination or incomplete relaxation can lengthen or disrupt the measured transit. This makes the interval a functional indicator of motility rather than merely a timing value.
Transit can vary with the strength and coordination of esophageal contractions, the effect of gravity, the properties of the swallowed bolus, and relaxation of the lower esophageal sphincter. Abnormal timing or irregular movement may reflect impaired motility, obstruction, or reflux-related dysfunction. Considering these contributors helps clinicians interpret an unusual measurement in its clinical context.
These techniques evaluate the same functional event by tracking bolus movement from the esophagus toward the stomach, but they use different measurement approaches. Radionuclide scintigraphy, fluoroscopy, and impedance-based monitoring can each provide information about transit when performed under standardized conditions. Their shared purpose is to characterize movement and identify delayed or irregular passage.
Standardized conditions make transit measurements more consistent and easier to interpret. Because movement is influenced by gravity, bolus properties, peristaltic contractions, and lower esophageal sphincter relaxation, changes in testing conditions could alter the observed interval. Consistency allows clinicians and researchers to compare findings more meaningfully when evaluating suspected dysfunction or following treatment outcomes.
A swallowed bolus is followed as it moves through the esophagus until it reaches the stomach, using radionuclide scintigraphy, fluoroscopy, or impedance-based monitoring. The assessment is conducted under standardized conditions so the observed interval reflects esophageal function. The resulting pattern can show whether passage is timely, prolonged, or irregular, supporting evaluation of swallowing and motility.
Clinicians can use the measurement to evaluate dysphagia, characterize esophageal disorders, and monitor treatment outcomes. Prolonged or irregular passage may support concern for impaired motility, obstruction, or reflux-related dysfunction. Comparing transit findings with the clinical situation helps indicate whether swallowing difficulty is associated with abnormal esophageal movement and whether function changes after treatment.