The Last Word with Lawrence O'Donnell. The Last Word with Lawrence O'Donnell is an hour-long weeknight news and political commentary program on MSNBC. The program airs live at 10:00 P.M. Eastern Time Monday-Thursday, and is hosted by Lawrence O'Donnell. O'Donnell is described by MSNBC as providing the last word on the biggest issues and most compelling stories of the day..
Factors and conditions that can cause troublesome blood clots, as well as serious conditions that are associated with blood clots, include: Antiphospholipid syndrome. Arteriosclerosis / atherosclerosis. Certain medications, such as oral contraceptives, hormone therapy drugs and some breast cancer medications.
Blood clots originating from inside the heart can be fatal. Photo Credit heart image by jim from Fotolia.com. In 1875, blood clots in the heart were found to cause strokes. It was established that blood clots were not only capable of developing in arteries and veins, but inside the heart as well.