Latest gas exchange Stories

2010-06-25 05:25:00

Yale University researchers have reported an important first step in regenerating fully functional lung tissue that can exchange gas "“ the most critical function of the lungs. Lung tissue is difficult to regenerate because it does not generally repair or regenerate beyond the microscopic level.   Currently, the only way to replace damaged adult lung tissue is through lung transplantation, a procedure highly vulnerable to organ rejection and infection, and one in which the...

2010-06-25 05:17:52

Researchers from the Wyss Institute for Biologically Inspired Engineering at Harvard University, Harvard Medical School and Children's Hospital Boston have created a device that mimics a living, breathing human lung on a microchip. The device, about the size of a rubber eraser, acts much like a lung in a human body and is made using human lung and blood vessel cells. Because the lung device is translucent, it provides a window into the inner-workings of the human lung without having to invade...

2010-01-27 09:45:59

Possible drug targets identified to alleviate critical symptoms associated with emphysema Chronic obstructive pulmonary disease (COPD) is defined by emphysema and/or chronic bronchitis. It destroys the normal architecture of the lung and inhibits the mechanical aspects of breathing, which prevents necessary gas exchange. Patients suffer from coughing fits, wheezing, and increased incidence of lung infections. These symptoms are associated with changes in the architecture of the lung. The air...

2009-03-10 07:30:13

Using ion-selective micro-electrodes electrical signals in plants moving from leaf to leaf could be measured. The speed of the signals spreading as voltage changes over cell membranes ranged from 5 to 10 cm per minute. The scientists discovered this new kind of electrical signal transmission system by applying a novel method: Filamentary electrodes were inserted through open stomata directly into the inner leaf tissue and then placed onto the cell walls (see picture). Stomata are...

2007-12-06 06:00:10

By Silva, Viviane Martins da de Oliveira Lopes, Marcos Venicios; de Araujo, Thelma Leite PURPOSE. To analyze the relationship between nursing diagnoses and survival rates in children with congenital heart disease. METHODS. A total of 270 observations were carried out in 45 children with congenital heart disease who were followed for 15 days. FINDINGS. Differences in mean survival times were identified in children not more than 4 months of age with respect to the following diagnoses:...

2007-04-26 06:00:11

By Thomas, P J; Paratz, J D SUMMARY A systematic review of randomised clinical trials was conducted to investigate the efficacy and safety of use of the lateral position in the management of ventilated intensive care patients. One review article and 11 empiric studies, which were mostly of low methodological quality, met the eligibility criteria. Large individual variations in P^sub a^O^sub 2^ response to lateral positioning were demonstrated. Greatest improvement in P^sub a^O^sub 2^...

2005-02-23 08:09:50

How the Earth adapted to life has much to do with the generation of a stable oxygen atmosphere. But how life adapted to Earth often hinges on whether oxygen is a poison. New research on insect oxygen use highlights the novel ways that life has shaped the Earth, and vice versa. Astrobiology Magazine -- A new study investigating the respiratory system of insects may have solved a mystery that has intrigued physiologists for decades: why insects routinely stop breathing for minutes at a time....

Latest gas exchange Reference Libraries

2013-01-01 15:53:59

The lung is a vital organ that is a part of the respiratory system. Generally a person has two lungs; however, the body can function with only one. The lung’s main function is to move oxygen and carbon dioxide into and out of the bloodstream through gas exchange. The lungs are located lateral to the heart in the thoracic cavity. Each lung has a tip called the apex, which is superior in the body. The bases of the lungs rest on the diaphragm. They appear to be spongy due to their bundles of...

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