microatelectasis

ad·he·sive at·el·ec·ta·sis

alveolar collapse in the presence of patent airways, especially when surfactant is inactivated or absent, particularly in respiratory distress syndrome of the newborn, acute radiation pneumonitis, or viral pneumonia.

microatelectasis

(mī″krō-ăt″ĕ-lĕk′tă-sĭs)
Microscopic collapse of alveoli that does not involve the airways and may not appear on radiographic examination.

microatelectasis

lung collapse visible only by microscope.
References in periodicals archive ?
9) Diminished inspiration in individuals with higher level lesions can lead to microatelectasis, dyspnea with exertion, and even respiratory insufficiency.
In those with severe respiratory involvement prolonged low lung volumes can result in chronic microatelectasis, muscular fibrosis, articular contracture, and subsequent chest wall deformity.
This mechanism adopted by the scoliotics has both advantages (reduction in inspiratory muscle fatigue) and also fraught with disadvantages (chances of microatelectasis, decreased alveolar ventilation and increased oxygen cost of breathing).
Respiratory problems include alveolar hypoventilation, microatelectasis, a restrictive respiratory pattern, a decreased ability to cough and an increased incidence of aspiration.
Ciliary function is depressed and increased thickened mucus can cause inflammation and microatelectasis.
Such an increase in lung elastance during weaning may also be due to microatelectasis from tidal volume decrease and pulmonary oedema from left ventricular (IV) dysfunction (3).