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Effect of Cafedrine/Theodrenaline and Urapidil on Cerebral Oxygenation

Information source: University of Schleswig-Holstein
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Cerebral Ischemia

Intervention: cafedrine/theodrenaline, urapidil (Drug)

Phase: N/A

Status: Withdrawn

Sponsored by: University of Schleswig-Holstein


During clamping of one internal carotid artery for endarterectomy, blood flow through this vessel has to be compensated by collateral arteries including the contralateral internal artery and vertebral arteries. In 7 % of all patients undergoing carotid endarterectomy this collateral flow is not sufficient to maintain adequate cerebral perfusion during clamping and ischemic brain damage is likely to emerge. To maximize cerebral blood flow during clamping, increase of blood pressure is a common procedure and routine at our institution. Increasing blood pressure can be enabled by tapering a mixture of Cafedrine und Theodrenalin (AkrinorŪ) until the designated blood pressure is reached. After declamping, the blood pressure has to be reduced to normal values to avoid postoperative hyperperfusion syndrome. This is enabled by tapering urapidil until normal blood pressure is achieved. It has been shown that cerebral oxygenation measured by near infrared spectroscopy is reduced by intravenous application of norepinephrine. Otherwise, intravenous nitroglycerine increases cerebral oxygenation during cardiopulmonary bypass. Hence, cafedrine/theodrenalin and urapidil may also have an effect on cerebral perfusion. In this prospective randomized study the effect of cafedrine/theodrenalin and urapidil on cerebral oxygenation measured by near infrared spectroscopy is investigated.

Clinical Details

Official title: Effect of Cafedrine/Theodrenaline and Urapidil During Carotid Endarterectomy on Cerebral Oxygenation Measured by Near Infrared Spectroscopy

Study design: Allocation: Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: Cerebral oxygenation


Minimum age: 18 Years. Maximum age: N/A. Gender(s): Both.


Inclusion Criteria:

- Patients scheduled for carotid endarterectomy

Exclusion Criteria:

- Cerebral disease

Locations and Contacts

University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Schleswig-Holstein 24105, Germany
Additional Information

Last updated: May 21, 2014

Page last updated: August 23, 2015

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