众所周知 ,脑干包括中脑、桥脑及延髓 ,所谓脑干出血应该包括中脑出血、桥脑出血及延髓出血。然而 ,以往所说脑干出血主要多指桥脑出血。日本秋田县脑卒中发病登记资料表明 ,实际上脑干出血中７５%为桥脑出血 ,２０ %为中脑出血 ,延髓出血最少见 ,大约占脑干出血的５%以下。１ As we all know, the brain stem, including the midbrain, pons and medulla, the so-called brainstem hemorrhage should include midbrain hemorrhage, pontine hemorrhage and bulbar bleeding. However, the main stem bleeding in the past mostly refers to pons cerebral hemorrhage. Akita County, Japan incidence of stroke registration data show that in fact 75% of brainstem hemorrhage is pontine hemorrhage, 20% of cerebral hemorrhage, medullary hemorrhage the least, accounting for about 5% of brainstem hemorrhage. 1