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Atelectasis by Mind Map: Atelectasis

1. Mechanisms

1.1. Compressive

1.2. Resorptive (Absorption)

1.3. Adhesive

1.3.1. Impaired Surfactant Production

2. Categories (reference material is linked here)

2.1. Obstructive

2.1.1. a.k.a - Resorptive Atelectasis Children at worst risk due to poorly developed collateral ventilation pathways Intrathoracic tumors, mucous plugs, and foreign bodies in the airway Absorptive atelectasis that happens during induction of, and intra-operative anesthesia

2.2. Non-obstructive

2.2.1. Compression increased pressure exerted on the lung causing the alveoli to collapse

2.2.2. Adhesive Result of a surfactant deficiency or dysfunction ARDS RDS in premature neonates

2.2.3. Cicatrization Result of parenchymal scarring of the lung, leading to contraction of the lung tuberculosis fibrosis Other chronic destructive lung processes

2.2.4. Relaxation Involves the loss of contact between parietal and visceral tissue as seen in pneumothoraces and pleural effusions.

2.2.5. Replacement One of the most severe forms and occurs when all of the alveoli in an entire lobe are replaced by tumor. Bronchioalveolar carcinoma - results in complete lung collapse.

2.3. Post-operative

2.3.1. May be due to all of the above

2.3.2. Absorptive & Compression are most common mechanisms.

2.4. Rounded

2.4.1. less common and often seen in asbestosis Pathophysiology - Folding of the atelectatic lung tissue to the pleura