- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00639951
Study to Evaluate the Efficacy of Two Treatment Schemes With Antivipmyn ® for the Treatment of Snake Bite Envenomation
Multicentric, Randomized,Controlled and Comparative Study to Evaluate the Efficacy of Two Treatment Schemes With Antivipmyn ® for the Treatment of Snake Bite Envenomation
The purpose of this study is to compare whether a same total dose given up front as a single dose is more effective and as safe as the same dose given as a fractioned dose.
Evaluate the Utility of the the Dry Tube Test Evaluating its Correlation with Coagulation Test Results (fibrinogen, platelets, INR, PT and PTT).
Explore the Evolution of some Serum Markers (CK, DHL, metalloproteinase), Amount of Venom and Antivenom Levels and the Progression of Local Lesions.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Snake bite Envenomation is a Public Health Problem especially for tropical and subtropical countries. The WHO estimates 40 000 annual deaths in the world for this cause. In México the Ministry of Health estimated 3 882 cases on 2005, being the age of 15-44 the most affected. There are not official numbers of mortality, although the thought is that there are few cases of death, most of them related with a delay on treatment.
There are a broad variety of clinical presentations depending on many factors such as species, snake bite variability or patient conditions. Proteolytic action of venom produces amines and vasoactive peptides such as bradykinin, histamine and serotonin which cause capillary lesions with anticoagulant effects. Coagulopathy is one of the most important systemic consequences. The Dry Tube Test has been proposed as an indirect test to evaluate coagulopathy related to this pathology.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
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Hermosillo
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Sonora, Hermosillo, Mexico
- Hermosillo Site
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NL
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Monterrey, NL, Mexico, 64460
- Hospital Universitario de la UANL "Dr. José Eleuterio González"
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Nayarit
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Tepic, Nayarit, Mexico, 63000
- Nayarit Site
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San Luis Potosi
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Ciudad Valles, San Luis Potosi, Mexico
- Ciudad Valles Site
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Veracruz
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Tempoal, Veracruz, Mexico, 92061
- Tempoal Site
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Men and women 6 to 65 years of age
- Presenting for emergency treatment of snake bite
- Requiring treatment with antivenom
- Informed consent document read and signed by patient (or parent/legal guardian)
- Participation within the last month on any clinical trial
- Arrival to Hospital within 24 hours after the snake bite
Exclusion Criteria:
- Allergy to horse serum
- Underlying medical conditions that significantly alter coagulation (oral anticoagulants, vitamin K deficiency, hepatic disease)
- Use of AINE 48 hours previously
- Use of any antivenom 2 weeks previously
- Pregnancy or breast-feeding women
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: A Normal dose Group
20 vials up front in a Single Dose of Antivipmyn in 500 ml of solution IV, administered in 60 minutes.
After 12 hours, it has to be perfomed a clinical evaluation of the patient.
Each patient is going to have clinical studies of coagulation time and also the fibrinogen measures, this at 2, 4, 6, 8, 10, 12, 48, 72, 96 hours.All patients who have received at least one dose of medication study will be contacted by telephone to investigate the presence of symptoms suggestive of continuing with effect snake venom, or the presence of an adverse event, or any signs or symptoms indicating the presence of a hypersensitivity response to Antivipmyn® including serum sickness.
If symptoms suggestive of an adverse event were discovered, the patient will referred for appropriate treatment.
|
20 vials up front in a Single Dose of Antivipmyn
Other Names:
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Placebo Comparator: B Placebo Group
20 vials fractionated into 4 doses of 5 vials each of Antivipmyn ®.
The treatment schedule for each subject is a dose of 5 vials Antivipmyn® every 2 hours to complete 20 vials, the total duration is 6 hours of the treatment.
Each dose IV shall apply in physiological solution 250ml, and finish its application in 15 minutes.
For pediatric patients the volume administered should not exceed the recommended fluid volume according to your body weight.
After the assessment at 12 hours, it can be administered at the discretion of more antivenom attending by the physician.
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20 vials fractionated into 4 doses of 5 vials each of Antivipmyn ®
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Resolution of systemic signs and symptoms of snake bite envenomation expressed as % of patients requiring additional antivenom and % of patients that are stable
Time Frame: 12 hours after initial treatment
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12 hours after initial treatment
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Evaluate the correlation between Dry Tube Test and Coagulation Test (PT, INR, PTT, platelets and fibrinogen)
Time Frame: baseline, 2,4,6 hours and after each extra dose of Antivenom
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baseline, 2,4,6 hours and after each extra dose of Antivenom
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Evaluate Venom and Antivenom Levels with the other parameters
Time Frame: baseline, 2 hours after initial treatment and after each extra dose of Antivenom
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baseline, 2 hours after initial treatment and after each extra dose of Antivenom
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Evaluate the possible relation of the serum markers (LDH, CPK, metalloproteinases)and local damage evolution.
Time Frame: baseline, 2, 4,6 and after each extra dose of Antivenom
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baseline, 2, 4,6 and after each extra dose of Antivenom
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Collaborators and Investigators
Sponsor
Investigators
- Study Director: Walter García, MD, Instituto Bioclon
- Study Chair: Anabel Loza, MD, Instituto Bioclon
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- YA-07/01
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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