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Doctor insights on: What Is Surfactant In The Lungs

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What is surfactant in the lungs?

What is surfactant in the lungs?

Critical: Surfactant keeps your lungs from collapsing, effectively defying the laws of surface physics to allow your air spaces to remain open and bring gas to and from your blood. ...Read more

Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more


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What is the function of surfactant in the lung?

What is the function of surfactant in the lung?

Prevent collapse: Surfactant keeps the alveoli open during the expiratory phase of breathing. It reduces the amount of work needed for breathing. ...Read more

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Can you please tell me why diabetes affects the lung surfactant of the fetus?

Can you please tell me why diabetes affects the lung surfactant of the fetus?

Delayed maturation: Maternal diabetes during pregnancy has an impact on the maturation of the baby's lungs, especially the surfactant system which tends to become fully functional around 38-40th week in normal pregnancies. With maternal diabetes, this process gets delayed & can lead to problems with breathing for the baby after birth (esp if born by c section). Talk to yr doc for further eval of lung maturity by test. ...Read more

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What is the purpose of surfactants in the respiratory system?

What is the purpose of surfactants in the respiratory system?

Keep air sacs open: Surfactants, which are made by the body and are also available as a medication for babies who are deficient in them (usually premie), coat the inside of the tiny air sacs in the lung and keep them open when you exhale. Just like a collapsed balloon is hard to inflate, a collapsed air sac is hard to open. When it doesn't close completely, it's easier to open with the next breath. ...Read more

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What is surfactant?

What is surfactant?

Lung chemical: This is an essential substance that lines the airspaces in the lung, and by a minor biological miracle prevents the bigger ones from explanding and making the smaller ones deflate. It may be given to premature babies who cannot make enough on their own. ...Read more

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What is the function of surfactants? What exactly do they do?

What is the function of surfactants? What exactly do they do?

Helpspreemiesbreathe: Premature infants often do not have enough surfactant at birth. This surfactant is made by everyone to help keep the alveoli open to facilitate gas exchange. Sometimes a surfactant needs to be administered by endotracheal tube to the lungs to help tide the infant over until the infant makes enough-1-2 days. There is surfactant derived from cow and pigs lung. There is also a synthetic surfactant. ...Read more

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Hi, being a medico, i wanna know, surfactant reduces the surface tension of what in the alveolus ?

Hi, being a medico, i wanna know, surfactant reduces the surface tension of what in the alveolus ?

See below. : It prevents the walls of the alveoli from sticking together (resulting in atelectasis), when the baby exhales, therefore making it easier for the baby to breathe, and yield a better oxygen transport. ...Read more

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I've had a chronic dry cough since having radiotherapy. All tests clear. Might this be due low levels of surfactant?

I've had a chronic dry cough since having radiotherapy.  All tests clear.  Might this be due low levels of surfactant?

Radiation: pneumonitis is one of the side effects of radiation to the chest. The inflammation may be controlled with steroids. Please consult this site for information and discuss the matter with your doctor. http://www.medicinenet.com/script/main/art.asp?articlekey=8101 ...Read more

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Hi docs, is it true that pulmonary surfactants are available commercially?

Used in NICU: There are at least two I am aware of that are used by neonatologists for infants with respiratory distress syndrome. ...Read more

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What are surfactants?

What are surfactants?

Lung cell secretions: Surfactants are substances secreted by certain cells of the lung, named Type II cells, that aid in reducing surface tension at the surface of the alveoli, the tiny air sacs of the lung that exchange oxygen and carbon dioxide. As the lungs mature in the fetus during pregnancy, the Type II cells increase their secretion and turnover of surfactant to mature the lungs in premature infants with ^ GA ...Read more