Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Space-time pressure structure of pharyngo-esophageal segment during swallowing
Autore:
Williams, RB; Pal, A; Brasseur, JG; Cook, IJ;
Indirizzi:
St George Hosp, Dept Gastroenterol, Kogarah, NSW 2217, Australia St GeorgeHosp Kogarah NSW Australia 2217 l, Kogarah, NSW 2217, Australia Univ New S Wales, Sydney, NSW 2217, Australia Univ New S Wales Sydney NSWAustralia 2217 s, Sydney, NSW 2217, Australia Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 n, University Pk, PA 16802 USA
Titolo Testata:
AMERICAN JOURNAL OF PHYSIOLOGY-GASTROINTESTINAL AND LIVER PHYSIOLOGY
fascicolo: 5, volume: 281, anno: 2001,
pagine: G1290 - G1300
SICI:
0193-1857(200111)281:5<G1290:SPSOPS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
ZENKERS DIVERTICULUM; SPHINCTER PRESSURE; DE-GLUTITION; MECHANISMS; TOPOGRAPHY; DYSPHAGIA; WAVES;
Keywords:
bolus transport; deglutition; pharynx; cricopharyngeus; sphincter; fluoroscopy; mechanics; upper esophageal sphincter;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Cook, IJ St George Hosp, Dept Gastroenterol, Level 1,Burt Neilson Wing,Gray St, Kogarah, NSW 2217, Australia St George Hosp Level 1,Burt Neilson Wing,Gray St Kogarah NSW Australia 2217
Citazione:
R.B. Williams et al., "Space-time pressure structure of pharyngo-esophageal segment during swallowing", AM J P-GAST, 281(5), 2001, pp. G1290-G1300

Abstract

We applied high-resolution manometry with spatiotemporal data interpolation and simultaneous videofluoroscopy to normal pharyngeal swallows to correlate specific features in the space-time intraluminal pressure structure with physiological events and normal deglutitive transsphincteric bolus flow to define normal biomechanical properties of the pharyngoesophageal (PE) segment. Pressures were recorded by microperfused catheter, and the two-dimensional space-time data sets were plotted as isocontours. On these were superimposed bolus trajectories, anatomic segment movements, and hyo-laryngeal trajectories from concurrent videofluoroscopy. Correlation of the highly reproducible space-time-pressure structure with radiographic images confirmed that primary deglutitive PE segment functions (pressure profile, laryngeal elevation, axial sphincter motion, timing of relaxation, contraction) are accurately discernible from single isocontour pressure visualization. Pressure during bolus flow was highly dependent on axial location within PE segment and time instant. The intrabolus pressure domain, corresponding to the space-time region between bolus head and tail trajectories, demonstrated significant bolus volume dependence. High-resolution manometry accurately, comprehensively, and highly reproducibly depicts the PE segment space-time-pressure structure and specific physiological events related to upper esophageal sphincter opening and transsphincteric flow during normal swallowing. Intrabolus pressure variations are highly dependent on position within the PEsegment and time.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 21:59:02