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Infant respiratory distress syndrome (IRDS), also known as surfactant deficiency disorder (SDD), [2] and previously called hyaline membrane disease (HMD), is a syndrome in premature infants caused by developmental insufficiency of pulmonary surfactant production and structural immaturity in the lungs.
Choanal atresia is caused by problems with the development of the nasal cavity and the palate. Development begins with neural crest cells. Frontonasal processes fold, forming nasal placodes (nasal pits). The nasobuccal membrane must rupture in places to form the choanae. A number of theories exist as to how this developmental process causes ...
Chest congestion is usually caused by excess mucus in the airways, says Meilan King Han, M.D., M.S., professor of medicine and chief of the Division of Pulmonary and Critical Care at the ...
Nasal obstruction characterized by insufficient airflow through the nose can be a subjective sensation or the result of objective pathology. [10] It is difficult to quantify by subjective complaints or clinical examinations alone, hence both clinicians and researchers depend both on concurrent subjective assessment and on objective measurement of the nasal airway.
Rebound nasal congestion suspected to be brought on by extended use of topical decongestants and certain oral medications that constrict blood vessels in the nose. Treatment includes withdrawal of nasal drops, short courses of systemic steroid therapy and in some cases, surgical reduction of turbinates, if they have become hypertrophied.
Newborn screening programs initially used screening criteria based largely on criteria established by JMG Wilson and F. Jungner in 1968. [6] Although not specifically about newborn population screening programs, their publication, Principles and practice of screening for disease proposed ten criteria that screening programs should meet before being used as a public health measure.
Typical symptoms are of a mild cold or resembling the flu; fever, nasal congestion, coryza, cough, and pinky-red eyes. [15] Infants may also have symptoms of an ear infection. [6] Onset is usually two to fourteen days after exposure to the virus. [10] There may be tiredness, chills, muscle aches, or headache. [6] However, some people have no ...
A CT scan showing evidence of the nasal cycle: the more patent airway is on the right of the image, the swollen turbinates congesting the left. The nasal cycle is the subconscious [1] [2] alternating partial congestion and decongestion of the nasal cavities in humans and other animals. This results in greater airflow through one nostril with ...
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