Navigation Links
Liquid ventilation

To live we need to breathe. Prior to being born we carry this activity out through the placenta and subsequently by means of our lungs. In normal development, the lungs of the foetus are filled with amniotic liquid and, on being born, the first cry activates this respiration surface. But the main problem that premature babies have is that their lungs are not well formed. Moreover, they often lack surfactant, a compound formed by proteins and lipids that avoids the lungs folding in on themselves before the baby gets stronger.

The respirators usually employd in these cases provide artificial surfactant, but not always in sufficient amounts to provide correct therapy. In order to alleviate this situation, the Nautical School at the University of the Basque Country has developed a liquid respiration respirator.

The machine simulates placentary respiration by filling the lungs of the premature baby with liquid and then the respirator introduces and extracts the required quantity of liquid at a suitable respiratory rhythm. The amount of liquid administered is usually in the order of 10 millilitres per kilogram of the baby's weight.

Perfluorocarbons instead of air

Perfluorocarbon is used in liquid respiration, as it has a suitable surface tension in order to maintain the pulmonary structure and the fluorine has good properties for the transport of and interchange between blood and the gases, O2 and CO2. The respirator syringes introduce the oxygenated perfluorocarbon to the very last alveola. Here oxygen is released and carbon dioxide taken up in the same way as on the respiration surface. Then the respirator extracts part of the perfluorocarbon from the lungs and introduces the next oxygenated dose. The same machine carries out the removal of CO2 from the perfluorocarbon and adds oxygen to it.

Being full of liquid, the problems of pressure associated with conventional assisted respiration are avoided because the lungs of the premature baby suffer less stress and respire more easily.

However, this story does not have a happy ending. The respirator, for the moment, is no more than a prototype. In the experiments carried out at the Cruces hospital in Bilbao with artificial lungs and with animals, the results have been very good. It has even been applied successfully in more than 80 death-threatening situations in premature babies. But the perfluorocarbon for medical use is not available on the market. As premature babies need very small quantities and no commercial application for adults has been found, the patent-owning company has opted not to market it arguing that it lacks profitability. Thus, an industrial version of the liquid respirator is yet to be developed


'"/>

Source:Elhuyar Fundazioa


Related biology news :

1. Liquid crystals show promise in controlling embryonic stem cells
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/6/2017)... April 6, 2017 Forecasts by ... Document Readers, by End-Use (Transportation & Logistics, Government & ... Gas & Fossil Generation Facility, Nuclear Power), Industrial, Retail, ... Are you looking for a definitive report ... ...
(Date:4/4/2017)...   EyeLock LLC , a leader of iris-based ... Patent and Trademark Office (USPTO) has issued U.S. Patent ... an iris image with a face image acquired in ... 45 th issued patent. "The ... the multi-modal biometric capabilities that have recently come to ...
(Date:3/30/2017)... March 30, 2017 Trends, opportunities and forecast ... behavioral), by technology (fingerprint, AFIS, iris recognition, facial recognition, ... others), by end use industry (government and law enforcement, ... and banking, and others), and by region ( ... Asia Pacific , and the Rest ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... Iowa (PRWEB) , ... October 12, 2017 , ... ... based in Vilnius, Lithuania, announced today that they have entered into a multiyear ... is to provide CRISPR researchers with additional tools for gene editing across all ...
(Date:10/11/2017)... N.C. (PRWEB) , ... October 11, 2017 , ... ... ARCS® Foundation President Andi Purple announced Dr. Suneel I. Sheikh, the co-founder, ... ( ASTER Labs ), Inc. has been selected for membership in ARCS ...
(Date:10/11/2017)... Oct. 11, 2017  VMS BioMarketing, a leading provider of ... oncology Clinical Nurse Educator (CNE) network, which will launch this ... communication among health care professionals to enhance the patient care ... staff, and other health care professionals to help women who ... ...
(Date:10/10/2017)... ... 10, 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, ... The bold new look is part of a transformation to increase awareness, appeal ... growth period. , It will also expand its service offering from its signature gourmet ...
Breaking Biology Technology: