| wandering organ | An organ with loose attachments, permitting its displacement. Synonym: floating organ, ptotic organ. (05 Mar 2000) |
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| wandering pacemaker | A disturbance of the normal cardiac rhythm in which the site of the controlling pacemaker shifts from beat to beat, usually between the sinus and A-V nodes, often with gradual sequential changes in P waves between upright and inverted in a given ECG lead. Synonym: shifting pacemaker. (05 Mar 2000) |
| wandering pneumonia | A form of pneumonia in which successive areas of the lung are affected; may occur in bronchopulmonary aspergillosis. Synonym: wandering pneumonia. (05 Mar 2000) |