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Endothelin-1 and Methabolites Concentrations in Mycrodialysis and Cerebrospinal Fluid in Subarachnoid Hemorrhage Patients

This study has been completed.
Information provided by (Responsible Party):
Luciana Mascia, University of Turin, Italy Identifier:
First received: September 12, 2012
Last updated: March 15, 2013
Last verified: December 2009

Endothelin-1 (ET-1) seems to be involved in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage. However measurements of cerebrospinal fluid concentrations (CSF) of ET-1 are not sensitive enough to predict the development of vasospasm representing the average value throughout the entire cerebral circulation. Cerebral microdialysis (MD) is a technique able to detect molecule concentrations in a small perivascular area. The investigators performed a prospective observational clinical study to test the hypothesis that MD ET-1 concentrations should be a sensitive predictor for vasospasm.

Patients with subarachnoid hemorrhage at high risk for vasospasm according to Fisher scale admitted to the ICU were consecutively studied. All patients received surgery within 48 hours from the bleeding; MD probe was placed in the area at risk for vasospasm after surgery and samples were hourly collected and analysed to measure lactate, piruvate and glutamate levels; ET-1 levels in CSF and MD fluids were measured from admission until day 7. At admission and after 7 days two angiographies were performed to detect the degree and extent of vasospasm, Transcranial Doppler and neurological evaluation were daily performed. Patients were then classified according to the presence of vasospasm in 3 groups: absence of vasospasm (NV), presence of vasospasm (CV), acute neurological deterioration (AND).

Subarachnoid Hemorrhage, Aneurysmal

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by University of Turin, Italy:

Primary Outcome Measures:
  • cerebral vasospasm incidence [ Time Frame: 14 days ]

Enrollment: 35
Study Start Date: January 2004
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)
subarachnoid hemorrhage disease
subarachnoid hemorrhage patients


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with subarachnoid hemorrhage at high risk for vasospasm according to Fisher scale admitted to the ICU were consecutively studied.

Inclusion Criteria:

  • diagnosys of subarachnoid hemorrhage
  • angiographic proof of aneurysm
  • admission within 24 hours from the subarachnoid hemorrhage
  • presence of an intraventricular catheter and a microdialysis catheter placed either after admission or at the time of the surgery

Exclusion Criteria:

  • moribund
  • GCS=3
  • denied consent
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Please refer to this study by its identifier: NCT01686763

Sponsors and Collaborators
University of Turin, Italy
Principal Investigator: Luciana Mascia, MD, PhD University of Turin, Italy
  More Information

Responsible Party: Luciana Mascia, MD, PhD, University of Turin, Italy Identifier: NCT01686763     History of Changes
Other Study ID Numbers: CEI 1147
Study First Received: September 12, 2012
Last Updated: March 15, 2013

Additional relevant MeSH terms:
Subarachnoid Hemorrhage
Pathologic Processes
Intracranial Hemorrhages
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases processed this record on May 25, 2017