Selenium DeficiencySICSNCT01394068
Prospective, Non-randomized Observational Trial of Selenium in Cardiac Surgery
An observational study of Selenium Deficiency, run by RWTH Aachen University at 1 site in Germany.
Trial summary
In this observational study the effect of selenium supplementation on the postoperative inflammatory response and clinical course should be examined in (approximately 100) adult patients undergoing elective heart surgery combined with extracorporeal circulation. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Selenium Deficiency
- How many people
- 100 participants
- Where
- 1 siteGermany
- Study dates
- Jan 2011to Aug 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Approximately 100 adult patients (male and female), capable of consenting, undergoing elective cardiac surgery on the heart-lung-machine
Who may be able to join
- Age of 18 years or older
- Elective heart surgery on the heart-lung-machine
- Written informed consent
- Inclusion into observational study at the latest on the last evening before surgery
Who cannot join
- Patients not capable of consenting
- pregnant women or women of child-bearing potential
Trial locations and contacts
1 site in 1 country.
About this study
Official title: SICS: A Prospective, Non-randomized Observational Trial of Selenium in Cardiac Surgery
In this observational study the effect of selenium supplementation on the postoperative inflammatory response and clinical course should be examined in (approximately 100) adult patients undergoing elective heart surgery combined with extracorporeal circulation.
Selenium is one of the essential trace elements with a variety of important immunological and antioxidant properties. The pathophysiological relevance of different selenium-dependent reactions has already been demonstrated in human and in animal experiments. It is essential for the enzymatic functions of selenium-containing proteins such as the glutathione peroxidase, which in turn affects the leukotriene, thromboxane and prostacyclin metabolism. In addition, selenium has a significant influence on various liver enzymes, therefore selenium deficiency leads to oxidative or chemically induced liver damage.
Read the detailed description
Heart Surgery on the heart-lung machine involves, inter alia, by ischemia and reperfusion, the release of reactive oxygen radicals and nitrogen oxide (NO), which damage DNA after reaction with peroxynitrite, and Lipid-/Endothelmembrane Protein. The formation and consumption of peroxynitrite can be reduced by intake of sodium selenite and the subsequent formation of selenoprotein P. Since there is no storage for selenium, but the synthesis of selenium-dependent enzymes is regulated by selenium resorption, the supplementation of selenium is a potentially useful application in patients undergoing cardiac surgery.
After induction of anaesthesia and before connecting to the heart-lung machine the patients get applied 2000μg sodium selenite (Selenase® T pro injection) intravenously (as a bolus infusion over 30 minutes).
Furthermore, they get infused 1000μg sodium-selenite on each ICU-treatment day (also about 30 minutes). In addition, various blood values are recorded daily (including selenium levels) within the routine blood samples. As the collection of these parameters is necessary anyway, it constitutes no additional burden on the patient. Shortly before the transfer to general ward there will be a final clinical examination.
In case of selenium level of 170μg per liter whole blood the employee of the laboratory immediately informs the investigator by fax and requests a new blood sample for control purposes (reference value for selenium in whole blood according to product information 100-144µg/ l). As long as the selenium level of the second sample is not higher than 230μg selenium per liter whole blood, there are no further precautions necessary according to the manufacturer's recommendations. In case of selenium level above 230μg /l, the investigator will be informed by fax without delay and the donation of investigational product will be interrupted immediately. If a patient shows clinical signs of selenium toxicity (garlic-like breath odor, fatigue, nausea, diarrhea, abdominal pain) it occurs an immediate termination of the selenium dose, initiating symptomatic counteractive measures and further control samples.
All blood samples are taken by vascular catheters, which are already set for surgery or for intensive care treatment, independent of the observational study.
- Conditions
- Selenium Deficiency
- Keywords
- Selenium level, Various blood values, Duration of artificial respiration, Residence in ICU/ Hospital, SOFA-Score, SAPS-Score
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jul 2011 (estimated)
- Study startJan 2011
- Primary completionAug 2011
- Study completionAug 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Selenium DeficiencyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- RWTH Aachen University
- Sponsor type
- University, hospital or other
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01394068
- Sponsor's protocol ID
- CTC-A 10-013 SICS
- Acronym
- SICS
- Status last verified
- Aug 2011
- First submitted
- 12 Jul 2011
- Last updated
- 18 Aug 2011
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 Aug 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- SICS: A Prospective, Non-randomized Observational Trial of Selenium in Cardiac Surgery
- ClinicalTrials.gov ID
- NCT01394068
- Acronym / sponsor ID
- SICS / CTC-A 10-013 SICS
- Conditions
- Selenium Deficiency
- Keywords
- Selenium level, Various blood values, Duration of artificial respiration, Residence in ICU/ Hospital, SOFA-Score, SAPS-Score
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- RWTH Aachen UniversityUniversity, hospital or other
- Study start
- Jan 2011
- Primary completion
- Aug 2011 (actual)
- Study completion
- Aug 2011 (actual)
- First posted
- 14 Jul 2011 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In this observational study the effect of selenium supplementation on the postoperative inflammatory response and clinical course should be examined in (approximately 100) adult patients undergoing elective heart surgery combined with extracorporeal circulation.
Selenium is one of the essential trace elements with a variety of important immunological and antioxidant properties. The pathophysiological relevance of different selenium-dependent reactions has already been demonstrated in human and in animal experiments. It is essential for the enzymatic functions of selenium-containing proteins such as the glutathione peroxidase, which in turn affects the leukotriene, thromboxane and prostacyclin metabolism. In addition, selenium has a significant influence on various liver enzymes, therefore selenium deficiency leads to oxidative or chemically induced liver damage.
Detailed description
Heart Surgery on the heart-lung machine involves, inter alia, by ischemia and reperfusion, the release of reactive oxygen radicals and nitrogen oxide (NO), which damage DNA after reaction with peroxynitrite, and Lipid-/Endothelmembrane Protein. The formation and consumption of peroxynitrite can be reduced by intake of sodium selenite and the subsequent formation of selenoprotein P. Since there is no storage for selenium, but the synthesis of selenium-dependent enzymes is regulated by selenium resorption, the supplementation of selenium is a potentially useful application in patients undergoing cardiac surgery.
After induction of anaesthesia and before connecting to the heart-lung machine the patients get applied 2000μg sodium selenite (Selenase® T pro injection) intravenously (as a bolus infusion over 30 minutes).
Furthermore, they get infused 1000μg sodium-selenite on each ICU-treatment day (also about 30 minutes). In addition, various blood values are recorded daily (including selenium levels) within the routine blood samples. As the collection of these parameters is necessary anyway, it constitutes no additional burden on the patient. Shortly before the transfer to general ward there will be a final clinical examination.
In case of selenium level of 170μg per liter whole blood the employee of the laboratory immediately informs the investigator by fax and requests a new blood sample for control purposes (reference value for selenium in whole blood according to product information 100-144µg/ l). As long as the selenium level of the second sample is not higher than 230μg selenium per liter whole blood, there are no further precautions necessary according to the manufacturer's recommendations. In case of selenium level above 230μg /l, the investigator will be informed by fax without delay and the donation of investigational product will be interrupted immediately. If a patient shows clinical signs of selenium toxicity (garlic-like breath odor, fatigue, nausea, diarrhea, abdominal pain) it occurs an immediate termination of the selenium dose, initiating symptomatic counteractive measures and further control samples.
All blood samples are taken by vascular catheters, which are already set for surgery or for intensive care treatment, independent of the observational study.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Approximately 100 adult patients (male and female), capable of consenting, undergoing elective cardiac surgery on the heart-lung-machine
Key inclusion criteria (4 listed)
- Age of 18 years or older
- Elective heart surgery on the heart-lung-machine
- Written informed consent
- Inclusion into observational study at the latest on the last evening before surgery
Key exclusion criteria (2 listed)
- Patients not capable of consenting
- pregnant women or women of child-bearing potential
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Aug 2011.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Selenium Deficiency, run by RWTH Aachen University at 1 site in Germany.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 Aug 2011. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Aug 2011.