The diagnosis and management of transient global amnesia in the emergency departmentĮmerg Med J 2007 24: 444-445.
Detection of intracranial venous reflux in patients of transient global amnesia. Transient global amnesia is a neurological disorder resulting in acute, transient memory loss.The etiology of this form of amnesia remains unclear, but certain triggers have been identified (e.g., strenuous physical exercise, psychological stress). ^ Hodges JR, Warlow CP Syndromes of transient amnesia: towards a classification a study of 153 cases.Transient global amnesia or subarachnoid haemorrhage? Clinical and laboratory findings in a particular type of acute global amnesia. ^ Monzani V, Rovellini A, Schinco G, et al. EEG and cerebral magnetic resonance imaging were non-informative and memory deficits resolved within 24 h.What does transient global amnesia really mean? Review of the literature and thorough study of 142 cases. Transient global amnesia (TGA) is a condition characterized by sudden onset of memory loss and confusion. ^ Quinette P, Guillery-Girard B, Dayan J, et al.Seeing a once competent and healthy partner, sibling or parent become incapable of remembering what was said only a minute ago is very distressing, and hence it is often the relatives who will require reassurance." See also "The most important part of management after diagnosis is looking after the psychological needs of the patient and his or her relatives. It does not affect mortality and has a small recurrence rate. This may be triggered by performing a Valsalva maneuver in the context of various precipitating events such as immersion in cold water, sexual activity, severe emotional stress and vigorous exertion. One current hypothesis is that TGA may be due to venous congestion of the brain, leading to ischemia of structures involved with memory, such as the hippocampus. There were no features of epilepsy, and the patient did not have any recent head injury or active epilepsy There were no focal neurological signs or deficits during or after the attack. There was an absence of clouding of consciousness. The attack was witnessed and reported as being a definite loss of recent memory ( anterograde amnesia). TGA does produce an inability to assimilate certain, generally current or recent, details while social skills and memories of distant past events or trivia is maintained.
It is differentiated from subarachnoid hemorrhage from the lack of headache. TGA is differentiated from stroke by the lack of tingling, peripheral limb involvement, speech impairment or ability to walk.
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