Methylene Blue in Sepsis: A Randomized Controlled Trial (SMURF)
|First Received Date ICMJE||June 12, 2007|
|Last Updated Date||May 26, 2008|
|Start Date ICMJE||June 2007|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
||The primary outcome of interest is to assess the norepinephrine requirements in the methylene blue groups to maintain a mean arterial blood pressure greater or equal to 65 mmHg in comparison to the control group. [ Time Frame: hourly for 96 hours ]|
|Original Primary Outcome Measures ICMJE
|Change History||Complete list of historical versions of study NCT00486174 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE
|Original Secondary Outcome Measures ICMJE
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Methylene Blue in Sepsis: A Randomized Controlled Trial|
|Official Title ICMJE||Intermittent Bolus Infusion of Methylene Blue to Reduce Norepinephrine Requirements in Sepsis: A Randomized Controlled Trial|
|Brief Summary||The purpose of this study is to investigate whether the addition of Methylene Blue to the standard treatment of septic shock will reduce vasopressor requirements|
The management of severe infections, sepsis and septic shock is a serious problem facing physicians. Septic shock kills 10,000 Canadians every year. It is the most common cause of death in intensive units and the rates of sepsis and septic shock continue to increase annually.
Septic shock is a complex interaction between pathologic vasodilation, relative and absolute hypovolemia, myocardial depression, and altered microvascular function resulting from a systemic inflammatory response to infection. After restoration of the circulating volume, many patients continue to suffer from a maldistribution of blood flow. Current hypotheses suggest that global indicators of hypoperfusion (serum lactate, hypotension, decreased oxygen delivery) represent an averaging of areas of normal or increased blood flow with areas where blood flow is decreased. These under-perfused areas become more hypoxic. The resulting tissue damage leads to more inflammation and more maldistribution, perpetuating a vicious cycle progressing on to death.
Vasopressive agents are used in an attempt to maintain mean arterial blood pressure and restore perfusion, but these agents work globally, potentially worsening blood flow to the under-perfused areas. As well, many vasopressors have deleterious side effects such as metabolic and endocrine functions, and changes to regional blood flow.
The microvascular changes are mediated by primarily nitric oxide (NO). Baseline levels of nitric oxide are produced by constitutive Nitric Oxide Synthase (cNOS), with NO levels measured in the nano-molar range. Inflammatory mediators cause increased production of inducible Nitric Oxide Synthase (iNOS) leading to NO levels measured in the micro-molar range.
Suppression of nitric oxide production using non-specific NOS inhibitors has had discouraging results. Methylene Blue is a selective iNOS inhibitor. The purpose of this pilot study is to confirm safety and demonstrate signs of benefit in the use of methylene blue in sepsis. In particular, this study will examine whether the addition of methylene blue to standard early goal directed therapy in sepsis will reduce vasopressor requirements.
|Study Type ICMJE||Interventional|
|Study Phase||Not Provided|
|Study Design ICMJE||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
|Intervention ICMJE||Drug: methylene blue
2.0 mg/kg of Methylene Blue administered every 6 hours (as required) for up to 48 hours.
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Withdrawn|
|Completion Date||Not Provided|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
|Ages||18 Years and older (Adult, Senior)|
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries ICMJE||Not Provided|
|Removed Location Countries||Canada|
|NCT Number ICMJE||NCT00486174|
|Other Study ID Numbers ICMJE||EMED-090-07
PSI Grant application #2006-36
|Has Data Monitoring Committee||Yes|
|U.S. FDA-regulated Product||Not Provided|
|IPD Sharing Statement||Not Provided|
|Responsible Party||Dr. Daniel W Howes, Queen's University|
|Study Sponsor ICMJE||Queen's University|
|Collaborators ICMJE||The Physicians' Services Incorporated Foundation|
|PRS Account||Queen's University|
|Verification Date||May 2008|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP