New perspectives of studying gastrointestinal muscle function.
The motor function of the gastrointestinal tract has primarily been studied using manometry and radiography, though more indirect tests have also been applied. Manometry and radiography do not provide detailed information about the muscle properties as can be assessed from studies of muscle properties in muscle strips in vitro. In recent years a technique based on impedance planimetric measurement of pressure-cross-sectional area relations in a distending bag has proven to provide more detailed information about the muscle function in vivo. This review shows examples of new muscle function analysis such as length-tension diagrams, force-velocity curves and preload-afterload diagrams.
Gregersen
Hans
H
Center for Visceral Biomechanics and Pain, The Research Building, Aalborg Hospital, DK-9100 Aalborg, Denmark. hag@aas.nja.dk
Liao
Donghua
D
D001696:Biomechanical Phenomena; D017097:Electric Impedance; D005769:Gastrointestinal Motility / Q000502:physiology*; D041981:Gastrointestinal Tract / Q000294:innervation / Q000502:physiology*; D006801:Humans; D008365:Manometry / Q000379:methods; D009119:Muscle Contraction / Q000502:physiology; D009130:Muscle, Smooth / Q000294:innervation / Q000502:physiology*