PMID: 8941512Nov 1, 1996Paper

Zone of apposition in the passive diaphragm of the dog

Journal of Applied Physiology
A M BoriekS S Margulies

Abstract

We determined the regional area of the diaphragmatic zone of apposition (ZAP) as well as the regional craniocaudal extent of the ZAP (ZAPht) of the passive diaphragm in six paralyzed anesthetized beagle dogs (8-12 kg) at residual lung volume (RV), functional residual capacity (FRC), FRC + 0.25 and FRC + 0.5 inspiratory capacity, and total lung capacity (TLC) in prone and supine postures. To identify the caudal boundary of the ZAP, 17 lead markers (1 mm) were sutured to the abdominal side of the costal and crural diaphragms around the diaphragm insertion on the chest wall. Two weeks later, the dogs' caudal thoraces were scanned by the use of the dynamic spatial reconstructor (DSR), a prototype fast volumetric X-ray computer tomographic scanner, developed at the Mayo Clinic. The three-dimensional spatial coordinates of the markers were identified (+/- 1.4 mm), and the cranial boundary of the ZAP was determined from 30-40 1.4-mm-thick sagittal and coronal slices in each DSR image. We interpolated the DSR data to find the position of the cranial and caudal boundaries of the ZAP every 5 degrees around the thorax and computed the distribution of regional variation of area of the ZAP and ZAPht as well as the total area of ZAP. The ZAP...Continue Reading

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Citations

Feb 14, 2015·Journal of Applied Physiology·André De Troyer, Theodore A Wilson
Dec 8, 1998·Journal of Applied Physiology·T A WilsonJ R Rodarte
Jun 11, 2016·Journal of Applied Physiology·André De Troyer, Theodore A Wilson
Jul 27, 2014·The Journal of Physiology·André De Troyer, Theodore A Wilson
Jul 25, 2000·Journal of Applied Physiology·M AngelilloT A Wilson

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