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The lungs may also appear hyperinflated. [5] It is a diagnosis of exclusion as it is a benign condition that can have symptoms and signs similar to more serious syndromes, such as respiratory distress or meconium aspiration .
Dynamic hyperinflation is a phenomenon that occurs when a new breath begins before the lung has reached the static equilibrium volume. [1] In simpler terms, this means that a new breath starts before the usual amount of air has been breathed out, leading to a build-up of air in the lungs, and causing breathing in and out to take place when the lung is nearly full.
Following are terms that specify a type of lung size and/or activity. More specific definitions may be found in individual articles. Eupnea – normal breathing; Apnea – absence of breathing
Obstructive lung disease is a category of respiratory disease characterized by airway obstruction. Many obstructive diseases of the lung result from narrowing (obstruction) of the smaller bronchi and larger bronchioles, often because of excessive contraction of the smooth muscle itself.
Meconium induces an inflammatory reaction within the lungs as there is an increase of autophagocytic cells and levels of caspase 3 after exposure. After 8 hours of meconium exposure, in rabbit foetuses, the total amount of apoptotic cells is 54%. [15] Therefore, the majority of meconium-induced lung damage may be due to the apoptosis of lung ...
In recent media reports, mycoplasma pneumonia has been described as “white lung syndrome,” due to the whitening of the lungs shown in x-rays of patients with pneumonia, NBC reports. The term ...
[11] [4] Lung volume tests may show hyperinflation (excessive air in lungs caused by air trapping). Diffusing capacity of the lung tests are usually normal; people with early-stage OB are more likely to have normal DLCO. [41] FEV1 (forced expiratory volume in 1 second) should be above 80% of predicted values to be considered normal ...
This leads to hyperinflation of the alveoli and, thus, the lungs. When this occurs asymmetrically, one lung can be larger than the other. [23] A severe variant of this condition is called giant bullous emphysema. On chest x-ray, one lung will be significantly more inflated than the other, causing a mediastinal shift.