The Collaborative International Dictionary
                    Intrathoracic
                    
                        
                
                                                                    Intrathoracic \In`tra*tho*rac"ic\, a. Within the thorax or chest.
Wiktionary
                    intrathoracic
                    
                        
                
                                                                    a. (context anatomy English) Within the thorax
Usage examples of "intrathoracic".
Waddell's nosebleed was due to the Valsalva maneuver, or an abrupt increase in intrathoracic pressure.