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Titolo:
RESPIRATORY MECHANICS IN RABBITS VENTILATED WITH DIFFERENT TIDAL VOLUMES
Autore:
SVANTESSON C; JOHN J; TASKAR V; EVANDER E; JONSON B;
Indirizzi:
UNIV LUND HOSP,DEPT CLIN PHYSIOL S-22185 LUND SWEDEN
Titolo Testata:
Respiration physiology
fascicolo: 3, volume: 106, anno: 1996,
pagine: 307 - 316
SICI:
0034-5687(1996)106:3<307:RMIRVW>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUNG-TISSUE MECHANICS; VISCOELASTIC PROPERTIES; DISTRESS SYNDROME; CHEST-WALL; PRESSURE; SYSTEM; SURFACTANT; HUMANS; FLOW; CATS;
Keywords:
MAMMALS, RABBIT; MECHANICS OF BREATHING, STATIC, VISCOELASTIC LUNG PROPERTIES; PRESSURE, STATIC ELASTIC, VISCOELASTIC, LUNG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
C. Svantesson et al., "RESPIRATORY MECHANICS IN RABBITS VENTILATED WITH DIFFERENT TIDAL VOLUMES", Respiration physiology, 106(3), 1996, pp. 307-316

Abstract

Respiratory mechanics was studied in 11 rabbits at tidal volumes (VT)of 6.7, 10, and 20 ml/kg. Flow interruptions were performed during the full respiratory cycle. The viscoelastic pressure (Pve) was measuredas the dynamic elastic pressure (Pel(dyn)) after flow cessation minusthe static elastic pressure (Pel(st)). Static elastic and viscoelastic parameters were determined with numerical technique. Static hysteresis was minimal even at large VT. The Pel(st)-V curve was linear at small VT and in 6 animals at moderate VT. In 5 animals at moderate VT andin all animals at large VT, a linear segment with constant compliancewas followed by a segment with decreasing compliance. The Pve-V curvecould be described with a linear model only at small VT. A non-linearmodel was needed at increased VT. Compliance increased with VT. Both static and viscoelastic behaviours were linear up to larger volume ranges at large VT compared to moderate VT.

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Documento generato il 01/12/20 alle ore 08:09:42