| IPS | idiopathic pain syndrome; idiopathic postprandial syndrome; inches per second; infundibular pulmonar... |
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| ISI | infarct size index; initial slope index; injury severity index; Institute for Scientific Information... |
| IV | ichthyosis vulgaris; initial visit; interventricular; intervertebral; intravaginal; intravascular; i... |
| TID | time interval difference [imaging]; titrated initial dose |
| resorption atelectasis | The slow partial collapse of a lobe that occurs when communication between alveoli and trachea is obstructed. (05 Mar 2000) |
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| round atelectasis | <syndrome> Collapse of part of the lung caught between shrinking fibrous pleura scars, sometimes resulting from pleural asbestosis. Synonym: round atelectasis. (05 Mar 2000) |
| cicatrization atelectasis | The decrease in air per unit lung volume due to fibrosis, causing decreased lung compliance, and increased tissue. (05 Mar 2000) |
| platelike atelectasis | Collapse of the portion of the lung distal to an obstructed subsegmental bronchus, manifested as a linear opacity on a chest radiograph. See: Fleischner lines. Synonym: platelike atelectasis. (05 Mar 2000) |
| primary atelectasis | <chest medicine, paediatrics> A nonexpansion of the lungs after birth is known as primary atelectasis. Secondary atelectasis can occur at any age but is common in infants due to hyaline membrane disease. This form may also be seen in patients after surgery (general anaesthesia). See: atelectasis. (05 Mar 1998) |
| secondary atelectasis | A nonexpansion of the lungs after birth is known as primary atelectasis. Secondary atelectasis can occur at any age but is common in infants due to hyaline membrane disease. This form may also be seen in patients after surgery (general anaesthesia). See: atelectasis. (27 Sep 1997) |
| segmental atelectasis | Partial collapse of one or more individual pulmonary segments. (05 Mar 2000) |
| subsegmental atelectasis | Collapse of the portion of the lung distal to an obstructed subsegmental bronchus, manifested as a linear opacity on a chest radiograph. See: Fleischner lines. Synonym: platelike atelectasis. (05 Mar 2000) |