1/3. temporal bone pathology findings due to drowning.It has been reported that anoxia due to near-drowning or near-suffocation causes brain damage but not inner ear damage. On the other hand, it has been shown that brain death causes both brain damage and inner ear damage. However, studies of temporal bone pathology resulting from sudden death due to drowning are few. We studied temporal bone pathology in six cases of individuals who died of accidents due to drowning. In all temporal bones examined, we found extensive congestion petechiae and haemorrhage in the vessels in the mucosal layers of the middle ear and mastoid air cells, as well as in the vessels around the facial nerve and carotid canal. In the inner ear, there was no abnormality in Corti's organ or the vestibular organs, except in one case who died in the bath. Our findings suggest that petechiae haemorrhage or congestion in the vessels of the mucosal layer and the vessels themselves of the middle ear occurs upon acute death due to drowning.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
2/3. Hypotensive hemorrhagic necrosis in basal ganglia and brainstem.Hypotensive hemorrhagic necrosis of the basal ganglia and brainstem has only occasionally been described. Three such cases are reported. Cardiac arrest had occurred in all cases, and it took at least 1 hour to restore adequate circulation. The patients remained comatose for 2 days to 2 weeks until death. Persistent hypotension causing ischemia in the distribution of deep perforating arteries is considered to have been the key underlying mechanism. hemorrhage is thought to have been caused by extravasation of red blood cells through damaged blood vessels.- - - - - - - - - - ranking = 0.25keywords = vessel (Clic here for more details about this article) |
3/3. temporal bone histopathologic findings in drowning victims.The human temporal bones of five drowning victims, the largest such series, to our knowledge, were evaluated to determine what histopathologic changes occurred. Thickening of the periosteal epithelium, especially on the surgical dome of the otic capsule, was evident in all cases. There was also hemorrhage in the middle ear cavity in four of the cases. In the fifth case, a cholesteatoma and ruptured tympanic membrane were observed, but there was no evidence of hemorrhage. It is proposed that an intact tympanic membrane is needed to create sufficient negative pressure in the middle ear cavity to cause rupture of the blood vessels and hemorrhage. Such bleeding is indicative of drowning when the tympanic membrane is intact.- - - - - - - - - - ranking = 0.25keywords = vessel (Clic here for more details about this article) |