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More info
You can access this
clinical trial
if you have
Intra-operative Hypotension or Carotid Stenosis
and you are
The phase for this study is not defined.
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The purpose

Carotid endarterectomy (CEA) is the recommended treatment for symptomatic high degree stenosis of the internal carotid artery (ICA). ICA obstruction is often associated with an impaired cerebral autoregulation, implicating that cerebral perfusion pressure becomes dependent on systemic blood pressure. Therefore, to maintain cerebral perfusion pressure in this type of patients intraoperative hypotension needs to be avoided. Different short-acting agents such as phenylephrine, (a drug with vasoconstrictive properties), or ephedrine (a drug with vasoconstrictive properties combined with an increase in heart rate) can be used to correct intra-operative hypotension. In healthy subjects these agents affect the cerebral perfusion differently despite an identical effect on the systemic blood pressure. Cerebral perfusion decreases after phenylephrine administration while it is preserved after the use of ephedrine. The optimal agent for correcting hypotension in CEA patients, and thus in a situation of an impaired cerebral autoregulation, is unknown. Therefore, the investigators propose to perform a prospective study observing the effect of phenylephrine and ephedrine on cerebral perfusion to make a recommendation regarding the use of either phenylephrine or ephedrine during CEA.

Provided treatments

  • Drug: Administration of phenylephrine
  • Drug: Administration of ephedrine

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01451294. The sponsor of the trial is G.J. de Borst and it is looking for 40 volunteers for the current phase.
Official trial title:
The Effect of Phenylephrine Versus Ephedrine on Cerebral Perfusion During Carotid Endarterectomy