<procedure> A procedure in which the doctor inserts a tube into the chest to view the organs in the mediastinum. The tube is inserted through an incision next to the breastbone. ... (12 Dec 1998) ... 
(me″de-as″tĭ-not´ә-me) incision of the mediastinum.
Type: Term Pronunciation: mē′dē-as′ti-not′ŏ-mē Definitions: 1. Incision into the mediastinum.
Mediastinotomy: A procedure in which the doctor inserts a tube into the chest to view the organs in the mediastinum. The tube is inserted through an incision next to the breastbone.