Transcranial Doppler Measurement and Prognosis in Moderate Head Injury
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT00353444|
Recruitment Status : Suspended (Technical Conflicts)
First Posted : July 18, 2006
Last Update Posted : November 6, 2008
|Condition or disease||Phase|
|Head Injury||Phase 2 Phase 3|
The head injury is a frequent problem of health, which produces high morbi-mortality. Today is the main cause of death and disability between 18 and 40 years. In addition it originates expensive expenses in health care systems.
Severity of cerebral injury is not only because of impact, it is implicated many physiopathological changes. Decrease or increase of cerebral blood flow (CBF) play important roll formation of edema and intracranial hypertension. Hypoxic/ischemic damage is the final point of both changes.
The transcranial Doppler (TCD) was introduced around 1982. Through TCD can be measured the flow velocity of intracranial arteries, which let us identify changes in diameter in vessels. There are three windows of access to arteries: transtemporal, transorbitary and suboccipital.
The parameter are systolic velocity (S), tele-diastolic velocity (D), mean velocity (M) and pulsatility index (PI). Many studies have been conducted for evaluate utility in head injury, TCD can identify changes that correlate with alteration in CBF intracranial pressure (ICP).
The autoregulatory status is important, TCD with decrement in D and increment in PI could tell us about failure in this issue. An invasive way for estimate cerebral perfusion pressure (CCP) with TCD. The most sensible for fall in is amplitude in FV. However there is more correlation between CPP and PI. Vasospasm can occur post trauma, for identify the Lindegaard ratio (FVcma/FVcia) is useful. The other change, hyperemia, can be demonstrated by continuously increase FV. In post traumatic time is very important identify alterations which could produce ischemia. The measurement of CPP generally is gotten by invasión with ICP determination.
In severe head injury has been demonstrated correlation between ICP and PI, strongest for CPP and PI. Other parameters are oligaemia and vasospasm in the first 24 hours correlate poor outcome.
Because of the non invasive characteristic and good correlation with physiologic and prognosis, we think it is important evaluate if there are a kind of correlation between amnesia and orientation, prognosis and TCD parameters.
|Study Type :||Observational|
|Estimated Enrollment :||70 participants|
|Official Title:||Transcranial Doppler Measurement and Prognosis in Moderate Head Injury|
|Study Start Date :||December 2006|
|Estimated Study Completion Date :||March 2007|
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00353444
|Hospital Central "Dr. Ignacio Morones Prieto"|
|San Luis Potosi, Mexico, 78240|
|Principal Investigator:||Torres-Corzo Jaime, Neurosurgeon||Hospital Central "Dr. Ignacio Morones Prieto"|
|Principal Investigator:||Tapia-Perez Humberto, MD||Facultad de Medicina UASLP|