摘要:
A method of assisting a mammal having a lung disorder to breathe ambient gas normally, i.e., without the assistance of a ventilator. The method includes providing an animal having a lung disorder, such as surfactant deficiency, stiff lung, or hyperinflated lung syndrome, and instilling a minimum effective dose of a perfluorochemical liquid or emulsion through the trachea for coating the alveolar sacs of a lung of the mammal. The preferred perfluorochemicals have a very low vapor pressure to avoid inducing hyperinflated lung syndrome and are supplied in a minimum effective dosage sufficient to coat the inner lung surfaces. The perfluorochemicals are permeable to the ambient gas and reside substantially permanently within the alveolar sacs without inducing hyperinflated lung syndrome. The liquid is instilled in an amount sufficient to enable the animal to breathe the ambient gas normally with O.sub.2 /CO.sub.2 blood gas exchange. Effective coating of the lungs with a small (generally
摘要:
A method of assisting a mammal having a lung disorder to breathe ambient gas normally, i.e., without the assistance of a ventilator. The method includes providing an animal having a lung disorder, such as surfactant deficiency, stiff lung or hyperinflated lung syndrome, and instilling a perfluorochemical liquid into the trachea for administration in the alveolar sacs of a lung of the animal. The perfluorochemical is permeable to the ambient gas and resides substantially permanently within the alveolar sacs without inducing hyperinflated lung syndrome. The liquid is instilled in an amount sufficient to enable the animal to breathe the ambient gas normally with O.sub.2 /CO.sub.2 blood gas exchange. In another aspect of the invention, the method further includes the step of alleviating the lung disorder without inducing hyperinflated lung syndrome.
摘要翻译:一种辅助具有肺部疾病的哺乳动物通常呼吸环境气体的方法,即不需要通气机的帮助。 该方法包括提供具有肺部病症的动物,例如表面活性物质缺乏症,僵硬的肺部或过度充气的肺综合征,并将全氟化学液体滴入气管中以供给动物肺部的肺泡囊。 全氟化合物对环境气体是可渗透的,并且基本上永久地驻留在肺泡囊内,而不引起高度膨胀的肺综合征。 以足以使动物通常以O 2 / CO 2血液气体交换呼吸环境气体的量滴入液体。 在本发明的另一方面,该方法还包括减轻肺部疾病而不引起过度充气的肺综合征的步骤。
摘要:
Perfluorotetramethylcyclohexane shows improved properties for use in biological gas exchange, both as a blood substitute and as perfluorocarbon for intra-pulmonary applications. The material has an adequately low vapor pressure to completely avoid causing hyperinflated lung damage and to increase the interval between required applications. However, the compound has a sufficiently high vapor pressure to produce acceptably brief residence time within the body. A method has been developed for using this novel compound to accelerate the exhalation of very low vapor pressure compounds such as perfluorophenanthrene from the lungs. The addition of perfluorotetramethylcyclohexane, along with perfluorophenanthrene, greatly increases the rate at which the perfluorophenanthrene is exhaled.