Congenital Heart DiseasePhase 2NCT00919945
Impact of Early Enteral Feeding on Splanchnic Blood Flow After Surgery for Critical Heart Disease in the Newborn
A Phase 2 study testing Continuous feeding at time 1 and NPO at time 2 and NPO at time 1 and continuous feeding at time 2 in people with Congenital Heart Disease, run by The Hospital for Sick Children at 1 site in Canada.
Trial summary
The objective of this study is to determine the impact of early post-operative feeding on splanchnic blood flow, cardiac output and end organ perfusion, and the patients overall clinical outcomes. Read more about this study
- Who is it for?
- Ages Up to 30 days
- Conditions the study is for
- Congenital Heart Disease
- What is being tested?
- Continuous feeding at time 1 and NPO at time 2 and NPO at time 1 and continuous feeding at time 2
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 42 participants
- Where
- 1 siteCanada
- Study dates
- Jan 2009to Jul 2014
- Phase
- Phase 2
- 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 Up to 30 days
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- neonates ≤ 30 days of postnatal age at time of operation
- birthweight > 2.5 kg
- gestational age at birth ≥ 35 weeks
- Patients requiring cardiac surgery who are expected to remain intubated in the CCIU for > 48 hours
- informed consent by parent or guardian
- approval by treating critical care staff physician
Who cannot join
- patients with heterotaxy or pre-existing renal or abdominal pathology (eg. preoperative diagnosis of NEC).
- need for ECMO after repair within the study period (data up to that point will be recorded and analyzed).
- Parent refusal of formula for purposes of study
- Patient on vasopressin or norepinephrine infusion
- Parent or legal guardian refuse consent
Trial locations and contacts
1 site in 1 country.
About this study
The objective of this study is to determine the impact of early post-operative feeding on splanchnic blood flow, cardiac output and end organ perfusion, and the patients overall clinical outcomes.
Read the detailed description
Neonates with critical congenital heart disease (CHD) undergoing surgery often have postoperative decreases in cardiac output. These hemodynamic changes can result in varying levels of organ dysfunction, ranging from the subclinical to the more overt. Although this low cardiac output syndrome (LCOS) and accompanying multiorgan dysfunction syndrome (MODS) is in large part transient, the rapidity and completeness of resolution can vary greatly.
During postoperative care in the intensive care unit, knowledge of this phenomenon must be balanced against the desire to initiate enteral nutrition. Many studies have demonstrated that timely initiation of enteral feeds in the intensive care can reduce mortality, morbidity and costs. Practically speaking, the decision to initiate feeds is made based on the patient's postoperative hemodynamic status, a normal lactate, absence of vasopressor agents and presence of bowel sounds. Trophic enteral feeding can usually commence 24h postoperatively, even after complicated neonatal heart surgery,
The vast majority of postoperative neonates suffer no apparent ill effects from this management strategy. However, recent data have demonstrated an exceedingly high incidence (3.3-6.8%) of necrotizing enterocolitis (NEC) in CHD patients; a disease for which diminution in splanchnic blood flow and disruption of the mucosal barrier are felt to play an important role. These data suggest the combination of diminished cardiovascular reserve, cyanosis and increased myocardial oxygen demands may promote the development of NEC.
Preliminary data from Sickkids (Chanthong and Sivarajan, 2008) demonstrates an NEC incidence of 8% in CHD patients. Patients with NEC also accounted for 25% of all cardiac arrests in Cardiac CCU.
- Conditions
- Congenital Heart Disease
- Being tested
- Continuous feeding at time 1 and NPO at time 2, NPO at time 1 and continuous feeding at time 2
- Keywords
- Neonates, Congenital Heart Disease, Postoperative Feeding, Splanchnic Blood Flow
- Medical subject headings
- Heart Defects, Congenital
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Continuous feeding at time 1 and NPO at time 2Other
Continuous nasogastric formula feeding (using Enfalac with iron 2400 kJ/L at a volume of 1ml/kg/h) at time 1 and NPO at time 2 (12 hours later)
NPO at time 1 and continuous feeding at time 2Other
NPO at time 1 and continuous nasogastric formula feeding (using Enfalac with iron 2400 kJ/L at a volume of 1ml/kg/h) at time 2 (12 hours later).
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | The initial observation period of the study begins in the postoperative period (time 0) after the patient arrives in the Cardiac Critical Care Unit and calibration of the monitors with initial clinically indicated baseline bloodwork is completed. Eligible patients will be randomized when the clinical decision to feed is made (by the treating team) to one of the two treatment arms. Patients in arm 1 will receive continuous nasogastric formula feeding at time 1 and NPO at time 2 (12 hours later). Receives: Other: Continuous feeding at time 1 and NPO at time 2 |
| 2 | Experimental | The initial observation period of the study begins in the postoperative period (time 0) after the patient arrives in the Cardiac Critical Care Unit and calibration of the monitors with initial clinically indicated baseline bloodwork is completed. Eligible patients will be randomized when the clinical decision to feed is made (by the treating team) to one of the two treatment arms. Patients in arm 2 will receive NPO at time 1 and crossover to continuous nasogastric formula feeding at time 2. Receives: Other: NPO at time 1 and continuous feeding at time 2 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in ultrasound derived bloodflow in superior mesenteric artery after feeding by 1 SD from prefeeding value.
Measured: At 0, 6, 12 and 24 hours after arrival at CCU; At 12 and 24 hours after decision to feed is made
Secondary outcomes (3)
Impact of Feeding on: Cardiac Output as measured by continuous mass spectometry, Fractional splanchnic output, Renal Perfusion, Tonometric, Assessment of gastric mucosal pH e. Cerebral oxygen delivery using the NIRS probe
Measured: Duration of patient's participation in the study
Correlation and Agreement between: Echo and continuous cardiac output measures; gastric tonometry, SMA PSV and qualitative Bowel Perfusion Index; renal artery PSV and temporal urine output
Measured: Duration of patient's participation in the study
Patient Outcomes: Survival, Time to Extubation, Duration of Postop ICU Admission, Duration of Postop hospital Admission, Discharge weight, Number of Nosocomial Infections, Development of NEC
Measured: Duration of patient's [articipation in the study
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jun 2009 (estimated)
- Study startJan 2009
- Primary completionJul 2013
- Study completionJul 2014 (estimated)
Why it stopped: Reduced enrollment rate for SV patients due to high competition for studies
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Congenital Heart DiseaseStudies of the same condition, open and under way.
- More trials run by The Hospital for Sick ChildrenThe 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
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind
- Who is masked
- Care provider, Investigator, Outcomes assessor
- Enrolment
- 42 participants (actual)
Sponsor and investigators
- Lead sponsor
- The Hospital for Sick Children
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ben Sivarajan, The Hospital for Sick Children
- Investigators
- Ben Sivarajan, MD, Principal investigator, The Hospital for Sick Children
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00919945
- Sponsor's protocol ID
- 1000012584
- Status last verified
- May 2014
- First submitted
- 11 Jun 2009
- Last updated
- 13 May 2014
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 13 May 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Impact of Early Enteral Feeding on Splanchnic Blood Flow After Surgery for Critical Heart Disease in the Newborn
- ClinicalTrials.gov ID
- NCT00919945
- Acronym / sponsor ID
- 1000012584
- Conditions
- Congenital Heart Disease
- Keywords
- Neonates, Congenital Heart Disease, Postoperative Feeding, Splanchnic Blood Flow
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Reduced enrollment rate for SV patients due to high competition for studies
- Enrolment
- 42 participants (actual)
- Lead sponsor
- The Hospital for Sick ChildrenUniversity, hospital or other
- Study start
- Jan 2009
- Primary completion
- Jul 2013 (actual)
- Study completion
- Jul 2014 (estimated)
- First posted
- 12 Jun 2009 (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 objective of this study is to determine the impact of early post-operative feeding on splanchnic blood flow, cardiac output and end organ perfusion, and the patients overall clinical outcomes.
Detailed description
Neonates with critical congenital heart disease (CHD) undergoing surgery often have postoperative decreases in cardiac output. These hemodynamic changes can result in varying levels of organ dysfunction, ranging from the subclinical to the more overt. Although this low cardiac output syndrome (LCOS) and accompanying multiorgan dysfunction syndrome (MODS) is in large part transient, the rapidity and completeness of resolution can vary greatly.
During postoperative care in the intensive care unit, knowledge of this phenomenon must be balanced against the desire to initiate enteral nutrition. Many studies have demonstrated that timely initiation of enteral feeds in the intensive care can reduce mortality, morbidity and costs. Practically speaking, the decision to initiate feeds is made based on the patient's postoperative hemodynamic status, a normal lactate, absence of vasopressor agents and presence of bowel sounds. Trophic enteral feeding can usually commence 24h postoperatively, even after complicated neonatal heart surgery,
The vast majority of postoperative neonates suffer no apparent ill effects from this management strategy. However, recent data have demonstrated an exceedingly high incidence (3.3-6.8%) of necrotizing enterocolitis (NEC) in CHD patients; a disease for which diminution in splanchnic blood flow and disruption of the mucosal barrier are felt to play an important role. These data suggest the combination of diminished cardiovascular reserve, cyanosis and increased myocardial oxygen demands may promote the development of NEC.
Preliminary data from Sickkids (Chanthong and Sivarajan, 2008) demonstrates an NEC incidence of 8% in CHD patients. Patients with NEC also accounted for 25% of all cardiac arrests in Cardiac CCU.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind (care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Other: Continuous feeding at time 1 and NPO at time 2The initial observation period of the study begins in the postoperative period (time 0) after the patient arrives in the Cardiac Critical Care Unit and calibration of the monitors with initial clinically indicated baseline bloodwork is completed. Eligible patients will be randomized when the clinical decision to feed is made (by the treating team) to one of the two treatment arms. Patients in arm 1 will receive continuous nasogastric formula feeding at time 1 and NPO at time 2 (12 hours later). |
| 2 | Experimental | Other: NPO at time 1 and continuous feeding at time 2The initial observation period of the study begins in the postoperative period (time 0) after the patient arrives in the Cardiac Critical Care Unit and calibration of the monitors with initial clinically indicated baseline bloodwork is completed. Eligible patients will be randomized when the clinical decision to feed is made (by the treating team) to one of the two treatment arms. Patients in arm 2 will receive NPO at time 1 and crossover to continuous nasogastric formula feeding at time 2. |
Who may qualify
- Ages
- Up to 30 days
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (6 listed)
- neonates ≤ 30 days of postnatal age at time of operation
- birthweight > 2.5 kg
- gestational age at birth ≥ 35 weeks
- Patients requiring cardiac surgery who are expected to remain intubated in the CCIU for > 48 hours
- informed consent by parent or guardian
Key exclusion criteria (5 listed)
- patients with heterotaxy or pre-existing renal or abdominal pathology (eg. preoperative diagnosis of NEC).
- need for ECMO after repair within the study period (data up to that point will be recorded and analyzed).
- Parent refusal of formula for purposes of study
- Patient on vasopressin or norepinephrine infusion
- Parent or legal guardian refuse consent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Continuous feeding at time 1 and NPO at time 2Continuous nasogastric formula feeding (using Enfalac with iron 2400 kJ/L at a volume of 1ml/kg/h) at time 1 and NPO at time 2 (12 hours later) | Other | 1 |
| NPO at time 1 and continuous feeding at time 2NPO at time 1 and continuous nasogastric formula feeding (using Enfalac with iron 2400 kJ/L at a volume of 1ml/kg/h) at time 2 (12 hours later). | Other | 2 |
Primary outcome
Change in ultrasound derived bloodflow in superior mesenteric artery after feeding by 1 SD from prefeeding value.
Time frame: At 0, 6, 12 and 24 hours after arrival at CCU; At 12 and 24 hours after decision to feed is made
3 secondary outcomes
Impact of Feeding on: Cardiac Output as measured by continuous mass spectometry, Fractional splanchnic output, Renal Perfusion, Tonometric, Assessment of gastric mucosal pH e. Cerebral oxygen delivery using the NIRS probe
Time frame: Duration of patient's participation in the study
Correlation and Agreement between: Echo and continuous cardiac output measures; gastric tonometry, SMA PSV and qualitative Bowel Perfusion Index; renal artery PSV and temporal urine output
Time frame: Duration of patient's participation in the study
Patient Outcomes: Survival, Time to Extubation, Duration of Postop ICU Admission, Duration of Postop hospital Admission, Discharge weight, Number of Nosocomial Infections, Development of NEC
Time frame: Duration of patient's [articipation in the study
Results and safety
The study was stopped early (reason given: Reduced enrollment rate for SV patients due to high competition for studies). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 May 2014.
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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.
Ben Sivarajan, MD principal investigator
The Hospital for Sick Children
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Continuous feeding at time 1 and NPO at time 2 and NPO at time 1 and continuous feeding at time 2 in people with Congenital Heart Disease, run by The Hospital for Sick Children at 1 site in Canada.
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 6 inclusion and 5 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: stopped early, as of the sponsor's last update on 13 May 2014. 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 Canada. 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.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study was stopped early (reason given: Reduced enrollment rate for SV patients due to high competition for studies). Results are not available in the source record.
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.
What does the primary outcome measure?
Change in ultrasound derived bloodflow in superior mesenteric artery after feeding by 1 SD from prefeeding value. (time frame: At 0, 6, 12 and 24 hours after arrival at CCU; At 12 and 24 hours after decision to feed is made). It is what the study was designed to measure, not a finding.
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 13 May 2014; AzTrials last refreshed its copy on 8 Nov 2026.