صفحه 1 از جانب 250 نتایج
Between 1972 and 1984, we treated 66 patients with foreign bodies (FBs) in the tracheobronhial tree. Twenty-six patients (39.4 percent) were between one and two years old; 52 (78.8 percent) were under age ten. Forty-four FBs (67 percent) were fruit and vegetable seeds and nuts. Soft organic material
A 59-year old woman presented with hemoptysis of thick blood clots and fever of two days duration. Her medical history included sarcoidosis for which she was on chronic steroids. Computed tomography imaging revealed stage IV sarcoidosis with diffuse cystic and fibrotic changes bilaterally, worse in
Tree cover differentiates forests from savannas and grasslands. In tropical floodplains, factors differentiating these systems are poorly known, even though floodplains cover 10% of the tropical landmass. Seasonal inundation potentially presents trees with both challenges (soil anoxia) and benefits
Nitroprusside induced hypoxemia in postoperative patients is a potentially compromising event. The decision tree in this article helps the critical care nurse to minimize or prevent complications of shunting from nitroprusside therapy.
Genomes contain evidence for the history of life and furthermore contain evidence for lateral gene transfer, which was an important part of that history. The geological record also contains evidence for the history of life, and newer findings indicates that the Earth's oceans were largely anoxic and
Little is known about the constituent hemodynamic consequences of structural changes that occur in the pulmonary arteries during the onset and progression of pulmonary arterial remodeling. Many disease processes are known to be responsible for vascular remodeling that leads to pulmonary arterial
In this short review, the current knowledge on the botany, ecology, uses, and medicinal properties of the multipurpose Garcinia subelliptica (Fukugi) is updated. As yet, there are no reviews on this indigenous and heritage coastal tree species of the Ryukyu Islands in Japan, which has ethnocultural,
Co-ordinated development of the fetal villous tree of the placenta is necessary for continued fetal growth and well-being. Before fetal viability, blood vessel development within the developing immature intermediate villi (IIV) is characterized by branching angiogenesis, such that the placenta
The sea cucumber, an important economic species, has encountered high mortality since 2013 in northern China because of seasonal environmental stress such as hypoxia, high temperature, and low salinity. MicroRNAs (miRNAs) are important in regulating gene expression in marine organisms in response to
Ribulose 1,5-bisphosphate (RuBP) carboxylase/oxygenase (RuBisCO, or Rubisco) catalyzes a key reaction by which inorganic carbon is converted into organic carbon in the metabolism of many aerobic and anaerobic organisms. Across the broader Rubisco protein family, homologs exhibit diverse biochemical
BACKGROUND
Endotracheal tube suctioning is necessary for patients receiving mechanical ventilation. Studies examining saline instillation before suctioning have demonstrated mixed results.
METHODS
A prospective study to evaluate whether saline instillation is associated with an increased risk of
Hypoxic pulmonary vasoconstriction (HPV) may be mediated, in part, by an oxygen-sensing mechanism intrinsic to pulmonary arterial smooth muscle. It has been proposed that hypoxia inhibits a K+ conductance, which promotes membrane depolarization, subsequent activation of L-type Ca2+ channels and
The past decade has seen a revival of interest in the metabolic adaptations of tumours, named for their original discoverer, Otto Warburg. Warburg reported a high rate of glycolysis in tumours, and a concurrent defect in mitochondrial respiration. The rediscovery of Warburg's hypothesis coincided
Plant populations can undergo very localized adaptation, allowing widely distributed populations to adapt to divergent habitats in spite of recurrent gene flow. Neotropical trees -whose large and undisturbed populations often span a variety of environmental conditions and local habitats - are