HypotensionNCT00425581
N-Terminal Pro-B-Type Natriuretic Peptide and Troponin Levels as Markers of Hemodynamic Stability in Very Low Birth Weight Infants During the First Days of Life
An observational study of Hypotension and Very Low Birth Weight Infants, run by Sheba Medical Center.
Trial summary
The primary objective is to test the hypothesis that there is an association between the hemodynamic status and the serum levels of NT-proBNP and cTnT in prematurely born infants. Read more about this study
- Who is it for?
- Ages 1 minute to 3 days
- Conditions the study is for
- Hypotension, Very Low Birth Weight Infants, Ventricular Dysfunction
- How many people
- 100 participants
- Where
- No sites listed yet
- Study dates
- Feb 2007to not given
- 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 1 minute to 3 days
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- VLBW infants born at Sheba medical Center
Who cannot join
- known cardiac or chromosomal anomaly
About this study
Official title: N-Terminal Pro-B-Type and Cardiac Troponin T Levels for Monitoring Effectiveness of Treatment in Very Low Birth Weight Infants With Hemodynamic Instability
The primary objective is to test the hypothesis that there is an association between the hemodynamic status and the serum levels of NT-proBNP and cTnT in prematurely born infants. We would also evaluate the hypothesis that there is an association between the level of these proteins in the serum and the short and long term morbidity.
Read the detailed description
NT-proBNP is a member of the natriuretic hormone family which plays an important role in regulation of extracellular fluid volume and blood pressure.It is secreted from the cardiac ventricle myocytes in response to myocardial stress. This hormone serves as a marker of ventricular dysfunction in adults but its role in newborns and especially preterm infants has not been well studied yet. Following birth of a healthy infant there is a surge in NT-proBNP levels which is then followed by a rapid decrease. One explanation for this surge is the transition in hemodynamics from fetal circulation into postnatal one. Few studies conducted in this area have shown association between NT-proBNP level and patency of ductus arteriosus and with respiratory distress syndrome of the newborn. Cardiac troponin T (cTnT)is a specific cardiac protein which serves as a specific indicator of cardiac damage in adults, it is usually not detected at birth but following myocardial injury its serum levels will slowly rise and generally will not be detectable until at least 4 hours after onset of injury. There is no "gold standard" test for diagnosis of hemodynamic instability in very low birth weight infants. Myocardial dysfunction is thought to be the major cause for this condition in VLBW population. Since this condition is associated with severe short and long term morbidity early recognition and specific treatment may be detrimental. We hypothesized that NT-proBNP and cTnT levels may serve as a more accurate markers for diagnosis, monitoring, and outcome prediction in VLBW infants during the first days of life, than the methods we currently use (blood pressure, urine output etc.)
- Keywords
- N-terminal pro-BNP,, Cardiac Troponin-T,, Very low birth weight infants, hemodynamic instability, myocardial dysfunction
- Medical subject headings
- Hypotension, Ventricular Dysfunction, Premature Birth, Cardiomyopathy, Familial Restrictive, 3
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jan 2007 (estimated)
- Study startFeb 2007
Why it stopped: Did not receive budget needed.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for HypotensionStudies of the same condition, open and under way.
- More trials run by Sheba Medical CenterThe sponsor's other registered studies.
- 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
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sheba Medical Center
- Sponsor type
- Other government
- Investigators
- Iris Morag, MD, Principal investigator, Sheba Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00425581
- Sponsor's protocol ID
- SHEBA-06-4255-IM-CTIL
- Status last verified
- Jan 2008
- First submitted
- 22 Jan 2007
- Last updated
- 24 Jan 2008
- Results posted
- No
- Data monitoring committee
- No
Publications
Bar-Oz B, Lev-Sagie A, Arad I, Salpeter L, Nir A. N-terminal pro-B-type natriuretic peptide concentrations in mothers just before delivery, in cord blood, and in newborns. Clin Chem. 2005 May;51(5):926-7. doi: 10.1373/clinchem.2005.048892. No abstract available.
PubMed 15855678Nasser N, Bar-Oz B, Nir A. Natriuretic peptides and heart disease in infants and children. J Pediatr. 2005 Aug;147(2):248-53. doi: 10.1016/j.jpeds.2005.03.051. No abstract available.
PubMed 16126059Makikallio K, Vuolteenaho O, Jouppila P, Rasanen J. Ultrasonographic and biochemical markers of human fetal cardiac dysfunction in placental insufficiency. Circulation. 2002 Apr 30;105(17):2058-63. doi: 10.1161/01.cir.0000015505.24187.fa.
PubMed 11980685Cowie MR, Mendez GF. BNP and congestive heart failure. Prog Cardiovasc Dis. 2002 Jan-Feb;44(4):293-321. doi: 10.1053/pcad.2002.24599.
PubMed 12007084Puddy VF, Amirmansour C, Williams AF, Singer DR. Plasma brain natriuretic peptide as a predictor of haemodynamically significant patent ductus arteriosus in preterm infants. Clin Sci (Lond). 2002 Jul;103(1):75-7. doi: 10.1042/cs1030075.
PubMed 12095406
Study at a glance
From the registry record, last updated by the sponsor on 24 Jan 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- N-Terminal Pro-B-Type and Cardiac Troponin T Levels for Monitoring Effectiveness of Treatment in Very Low Birth Weight Infants With Hemodynamic Instability
- ClinicalTrials.gov ID
- NCT00425581
- Acronym / sponsor ID
- SHEBA-06-4255-IM-CTIL
- Keywords
- N-terminal pro-BNP,, Cardiac Troponin-T,, Very low birth weight infants, hemodynamic instability, myocardial dysfunction
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: Did not receive budget needed.
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Sheba Medical CenterOther government
- Study start
- Feb 2007
- First posted
- 23 Jan 2007 (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.
The primary objective is to test the hypothesis that there is an association between the hemodynamic status and the serum levels of NT-proBNP and cTnT in prematurely born infants. We would also evaluate the hypothesis that there is an association between the level of these proteins in the serum and the short and long term morbidity.
Detailed description
NT-proBNP is a member of the natriuretic hormone family which plays an important role in regulation of extracellular fluid volume and blood pressure.It is secreted from the cardiac ventricle myocytes in response to myocardial stress. This hormone serves as a marker of ventricular dysfunction in adults but its role in newborns and especially preterm infants has not been well studied yet. Following birth of a healthy infant there is a surge in NT-proBNP levels which is then followed by a rapid decrease. One explanation for this surge is the transition in hemodynamics from fetal circulation into postnatal one. Few studies conducted in this area have shown association between NT-proBNP level and patency of ductus arteriosus and with respiratory distress syndrome of the newborn. Cardiac troponin T (cTnT)is a specific cardiac protein which serves as a specific indicator of cardiac damage in adults, it is usually not detected at birth but following myocardial injury its serum levels will slowly rise and generally will not be detectable until at least 4 hours after onset of injury. There is no "gold standard" test for diagnosis of hemodynamic instability in very low birth weight infants. Myocardial dysfunction is thought to be the major cause for this condition in VLBW population. Since this condition is associated with severe short and long term morbidity early recognition and specific treatment may be detrimental. We hypothesized that NT-proBNP and cTnT levels may serve as a more accurate markers for diagnosis, monitoring, and outcome prediction in VLBW infants during the first days of life, than the methods we currently use (blood pressure, urine output etc.)
Study design
- Time perspective
- Prospective
Who may qualify
- Ages
- 1 minute to 3 days
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (1 listed)
- VLBW infants born at Sheba medical Center
Key exclusion criteria (1 listed)
- known cardiac or chromosomal anomaly
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 was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Jan 2008.
- Background: PubMed 15855678Bar-Oz B, Lev-Sagie A, Arad I, Salpeter L, Nir A. N-terminal pro-B-type natriuretic peptide concentrations in mothers just before delivery, in cord blood, and in newborns. Clin Chem. 2005 May;51(5):926-7. doi: 10.1373/clinchem.2005.048892. No abstract available.
- Background: PubMed 16126059Nasser N, Bar-Oz B, Nir A. Natriuretic peptides and heart disease in infants and children. J Pediatr. 2005 Aug;147(2):248-53. doi: 10.1016/j.jpeds.2005.03.051. No abstract available.
- Background: PubMed 11980685Makikallio K, Vuolteenaho O, Jouppila P, Rasanen J. Ultrasonographic and biochemical markers of human fetal cardiac dysfunction in placental insufficiency. Circulation. 2002 Apr 30;105(17):2058-63. doi: 10.1161/01.cir.0000015505.24187.fa.
- Background: PubMed 12007084Cowie MR, Mendez GF. BNP and congestive heart failure. Prog Cardiovasc Dis. 2002 Jan-Feb;44(4):293-321. doi: 10.1053/pcad.2002.24599.
- Background: PubMed 12095406Puddy VF, Amirmansour C, Williams AF, Singer DR. Plasma brain natriuretic peptide as a predictor of haemodynamically significant patent ductus arteriosus in preterm infants. Clin Sci (Lond). 2002 Jul;103(1):75-7. doi: 10.1042/cs1030075.
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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.
Iris Morag, MD principal investigator
Sheba Medical Center
Questions about this trial
What is this clinical trial studying?
An observational study of Hypotension and Very Low Birth Weight Infants, run by Sheba Medical Center.
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 1 inclusion and 1 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: withdrawn, as of the sponsor's last update on 24 Jan 2008. Status can change between updates, so confirm with the study contact before making plans.
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 was withdrawn before enrolling participants, so there are no results.
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?
On the ClinicalTrials.gov record for NCT00425581, which also lists 5 linked publications.
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 24 Jan 2008.