This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

High-dose Simvastatin for Aneurysmal Subarachnoid Haemorrhage (HDS-SAH)

This study has been completed.
Hong Kong Government
Information provided by (Responsible Party):
George KC Wong, Chinese University of Hong Kong Identifier:
First received: February 26, 2010
Last updated: February 2, 2015
Last verified: February 2015

Experimental evidences supported the benefit of Simvastatin in subarachnoid haemorrhage. Moreover, Simvastatin is a potent agent in achieving low-density lipoprotein (LDL) reduction with a proven safety profile. However, there is no clinical data to compare the efficacy of different dosage regimens (namely whether high-dose regimen is better) and related cost-effectiveness analysis, although biochemical actions and related neuroprotective mechanisms were thought to be dosage-related. This gap in knowledge is important, on how to implement the use of statin and interpret different trial results. With these in mind, the investigators designed the current study.


Daily Simvastatin 80mg (high dose) treatment given within 96 hours of the ictus over three weeks will reduce incidence and duration of delayed ischemic deficits following subarachnoid haemorrhage when compared to daily Simvastatin 40mg (normal dose) treatment, leading to improvement in clinical outcome, which translates into advantage in terms of cost-effectiveness.

Condition Intervention Phase
Subarachnoid Hemorrhage Drug: Simvastatin Phase 2 Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: High-dose Simvastatin for Aneurysmal Subarachnoid Haemorrhage: Is it Better?

Resource links provided by NLM:

Further study details as provided by George KC Wong, Chinese University of Hong Kong:

Primary Outcome Measures:
  • Presence of delayed ischemic neurological deficit [ Time Frame: One month ]

Secondary Outcome Measures:
  • Liver function derangement or rhabdomyolysis [ Time Frame: Three months ]
  • Modified Rankin Scale [ Time Frame: Three months ]
  • Cost-effectiveness analysis [ Time Frame: Three months ]

Enrollment: 255
Study Start Date: September 2010
Study Completion Date: September 2013
Primary Completion Date: June 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Simvastatin 80mg Drug: Simvastatin
80mg daily versus 40mg daily, for 21 days.
Other Name: Teva
Active Comparator: Simvastatin 40mg Drug: Simvastatin
80mg daily versus 40mg daily, for 21 days.
Other Name: Teva

  Show Detailed Description


Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion criteria:

  1. Patients (age 18-70 years) in which the admitting neurosurgeon has a high index of suspicion of a spontaneous aneurysmal subarachnoid haemorrhage with a convincing CT scan findings.
  2. Any clinical grade accepted provided a reasonable prospect of survival.
  3. Delay to randomization and initiation of trial medication from the time of the presenting ictus does not exceed 96 hours.

Exclusion criteria:

  1. Unsalvageable patients: Fixed and dilated pupils after resuscitation, and/or a devastating scan, which preludes definitive therapy.
  2. Already taking statin therapy.
  3. Those taking Warfarin-type drugs.
  4. Pregnancy.
  5. Known renal or hepatic impairment.
  6. Suspected or known additional disease process, which threatens life expectancy (e.g. malignancy).
  7. Known or strong suspicion of drug abuse, alcoholism, or those who are likely to be amendable to 3 month follow up.
  8. Those already taking amiodarone, verapamil or potent CYP3A4 inhibitors.
  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: NCT01077206

The Chinese University of Hong Kong
Hong Kong, China
Sponsors and Collaborators
Chinese University of Hong Kong
Hong Kong Government
Principal Investigator: George KC Wong Department of Surgery, The Chinese University of Hong Kong
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: George KC Wong, Professor (Clinical), Chinese University of Hong Kong Identifier: NCT01077206     History of Changes
Other Study ID Numbers: GW005
Study First Received: February 26, 2010
Last Updated: February 2, 2015

Keywords provided by George KC Wong, Chinese University of Hong Kong:
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
Anticholesteremic Agents
Hypolipidemic Agents
Molecular Mechanisms of Pharmacological Action
Lipid Regulating Agents
Hydroxymethylglutaryl-CoA Reductase Inhibitors
Enzyme Inhibitors processed this record on August 17, 2017