- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT00919945
Impact of Early Enteral Feeding on Splanchnic Blood Flow After Surgery for Critical Heart Disease in the Newborn
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
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.
Tipo de estudio
Inscripción (Actual)
Fase
- Fase 2
Contactos y Ubicaciones
Ubicaciones de estudio
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Ontario
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Toronto, Ontario, Canadá, M5G 1X8
- The Hospital for Sick Children
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- 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
Exclusion Criteria:
- 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
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación cruzada
- Enmascaramiento: Triple
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Experimental: 1
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).
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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)
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Experimental: 2
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.
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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).
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
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Change in ultrasound derived bloodflow in superior mesenteric artery after feeding by 1 SD from prefeeding value.
Periodo de tiempo: At 0, 6, 12 and 24 hours after arrival at CCU; At 12 and 24 hours after decision to feed is made
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At 0, 6, 12 and 24 hours after arrival at CCU; At 12 and 24 hours after decision to feed is made
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Medidas de resultado secundarias
Medida de resultado |
Periodo de tiempo |
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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
Periodo de tiempo: Duration of patient's participation in the study
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Duration of patient's participation in the study
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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
Periodo de tiempo: Duration of patient's participation in the study
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Duration of patient's participation in the study
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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
Periodo de tiempo: Duration of patient's [articipation in the study
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Duration of patient's [articipation in the study
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Ben Sivarajan, MD, The Hospital for Sick Children
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Anticipado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 1000012584
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
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