Cervical spinal cord injury (SCI) can dramatically impair diaphragm muscle function and often necessitates mechanical ventilation (MV) to maintain adequate pulmonary gas exchange. MV is a life-saving intervention. However, prolonged MV results in atrophy and impaired function of the diaphragm. Since cervical SCI can also trigger diaphragm atrophy, it may create preconditions that exacerbate ven...

Evidence for diaphragm injury in people with chronic obstructive pulmonary disease (COPD) has been reported, although the extent of injury and collagen accumulation post mortem have not previously been examined. In addition, it is not known whether the amount of injury and collagen are different in key regions of the diaphragm. The cross-sectional area of collagen and the percentage of abnormal...

Rat diaphragm muscle has been used almost exclusively for the investigation in vitro of skeletal muscle metabolism. However, the diaphragm is a specialized muscle adapted to constant activity and, with respect to oxygen consumption (1) and oxidative metabolism, seems to occupy an intermediate position between constantly active heart muscle and intermittently active skeletal muscle (2, 3). Histo...

We analyzed a statistical model of diaphragm motion using regular principal component analysis (PCA) and generalized N-dimensional PCA (GND-PCA). First, we generate 4D MRI of respiratory motion from 2D MRI using an intersection profile method. We then extract semiautomatically the diaphragm boundary from the 4D-MRI to get subject-specific diaphragm motion. In order to build a general statistica...

BACKGROUND The influence of the diaphragm motion to the accuracy of postoperative lung function prediction after the lung resction is still debatable. METHODS Prospective study that included 27 patients who underwent a lung resection for cancer. Diaphragm movements were assessed radiographically and by ultrasonography before the operation and postoperatively, with the lung fully expanded. The...

In this study, the effects of mesa dimensions on sensor response in diaphragm-based Fabry-Perot fiber optic sensors (FOSs) were investigated detail. Mesa diaphragms, also called center-embossed have been discussed sufficiently literature, but effect thickness performance has not Moreover, there is no precise analytical solution for such diaphragms. For reason, diaphragms with different thicknes...

BACKGROUND AND METHODOLOGY Women have used the contraceptive diaphragm for decades. Although use has recently declined, the diaphragm may find a new role in STI/HIV and dual-prevention programmes when microbicides become available. We developed a questionnaire to examine seven provider issues identified as possible barriers to diaphragm use among advanced practice nurses (APNs) specialising in ...

Little is known about how pressure-support ventilation affects diaphragm performance because there is no direct measurement of diaphragm function in the clinical setting. An indicator of diaphragm performance or work is the product of diaphragm muscle shortening and intrathoracic pressure during inspiration. We studied the effect of pressure-support ventilation on diaphragm shortening, diaphrag...

To provide information on the identification and quality evaluation of Q. variabilis virgin cork from Korea, qualitative anatomical characteristics were observed by optical scanning electron microscopy compared with those suber reproduction Portugal. showed a narrower growth ring than suber. A dark-brown zone sclereids was found only in cork. The lenticular channel is larger that distinct bound...