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Effects of Dexmedetomidine on Inflammatory Cytokines in Patients With Aneurysmal Subarachnoid Hemorrhage

This study has been terminated.
(Slow enrollment along with new competing studies, investigators decided to stop study)
Information provided by (Responsible Party):
Shaun Keegan, University of Cincinnati Identifier:
First received: March 23, 2012
Last updated: March 5, 2015
Last verified: March 2015
The purpose of this research is to compare patients with aneurysmal subarachnoid hemorrhage on dexmedetomidine compared to propofol to assess if one group has decreased inflammation. The investigators hypothesis is that the group assigned to receive dexmedetomidine will have a more profound decrease in markers of inflammation over time.

Condition Intervention Phase
Subarachnoid Hemorrhage, Aneurysmal Drug: Dexmedetomidine Drug: propofol Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Effects of Dexmedetomidine on Inflammatory Cytokines in Patients With Aneurysmal Subarachnoid Hemorrhage

Resource links provided by NLM:

Further study details as provided by Shaun Keegan, University of Cincinnati:

Primary Outcome Measures:
  • Changes between serum and CSF cytokines over 48 hours [ Time Frame: 0, 24 and 48 hours ]
    Measure the baseline level (at enrollment) of inflammatory markers tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), glial fibrially acidic protein (GFAP), and malondialdehyde (MDA) as measured in both serum and cerebrospinal fluid (CSF) in 10 patients with aneurysmal subarachnoid hemorrhage (aSAH).

Secondary Outcome Measures:
  • Sedative and analgesic medication requirements [ Time Frame: 2 weeks ]
    Sedation requirements between the two groups will be assessed by comparing total daily dose and average daily fentanyl doses in the 24 hours following surgery. The total number of patients requiring propofol rescue in the dexmedetomidine group and the total daily dose and average daily dose of the propofol used in the dexmedetomidine group will be recorded.

  • Sedation scores (RASS and CAM-ICU) [ Time Frame: 2 weeks ]
  • ICU length of stay [ Time Frame: 2 weeks ]
  • Hospital length of stay [ Time Frame: 2 weeks ]
  • Glasgow Outcome Scores Extended (GOSE) at discharge [ Time Frame: 2 weeks ]
  • Incidence of delayed cerebral ischemia (DCI) [ Time Frame: 2 weeks ]

Enrollment: 4
Study Start Date: February 2012
Estimated Study Completion Date: July 2015
Estimated Primary Completion Date: July 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Propofol Drug: propofol
5-80 mcg/kg/min
Experimental: Dexmedetomidine Drug: Dexmedetomidine
0.2-1.5 mcg/kg/hr


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Aneurysmal subarachnoid hemorrhage
  • World Federation of Neurological Surgeons (WFNS) grade 4-5 (see table below)
  • Surgical intervention with clip or coil
  • Placement of cerebrospinal fluid drain (lumbar or ventricular)
  • Mechanically ventilated at start of infusion

Exclusion Criteria:

  • Hemodynamic instability (SBP < 100, HR <60, or on continuous infusion of catecholamines) at screening
  • Heart failure class III or IV (New York Heart Association)
  • Renal failure (RIFLE classification - see table below)
  • Liver failure (serum protein < 3 g/dL and total bilirubin > 5 mg/dL)
  • Known or suspected brain death
  • Pregnancy
  • Unable to receive dexmedetomidine within 48 hours of injury and 4 hours of surgery
  • Allergy to dexmedetomidine
  • Prisoners
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01565590

United States, Ohio
University Hospital
Cincinnati, Ohio, United States, 45219
Sponsors and Collaborators
University of Cincinnati
  More Information

Responsible Party: Shaun Keegan, Clinical Pharmacy Specialist, Critical Care, University of Cincinnati Identifier: NCT01565590     History of Changes
Other Study ID Numbers: 11-11-22-01
Study First Received: March 23, 2012
Last Updated: March 5, 2015

Keywords provided by Shaun Keegan, University of Cincinnati:
aneurysmal subarachnoid hemorrhage

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
Hypnotics and Sedatives
Central Nervous System Depressants
Physiological Effects of Drugs
Anesthetics, Intravenous
Anesthetics, General
Analgesics, Non-Narcotic
Sensory System Agents
Peripheral Nervous System Agents
Adrenergic alpha-2 Receptor Agonists
Adrenergic alpha-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action processed this record on June 23, 2017