A Study on the Effects of Feeding and Feeding Methods on Breathing Pattern in Very Low Birth Weight Preterm Infants

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

10 participants

Study Classification

OBSERVATIONAL

Study Start Date

2008-03-31

Study Completion Date

2008-12-31

Brief Summary

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In this study, we want to see how feeding affects breathing in small premature babies. Using a special feeding tube in the stomach, we can measure how the diaphragm (a large breathing muscle) might be affected by feeding. We also want to see if slowing down the feeding may lessen this effect.

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Detailed Description

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Premature babies may have pauses in breathing known as apnea, which may require invasive treatment. The exact cause of apnea is unknown, and may be related to a combination of brain, gut, and lung immaturity.

Research in premature babies suggests that feeding may affect lung functions, but such effects may be lessened if feeds are given at a slower rate. Further research showed that the diaphragm, an important breathing muscle, may be fatigued by a full stomach. We speculate that, in premature babies, feeding might tire the diaphragm, thus impairing lung function and possibly causing apnea.

We plan to study 10 stable premature babies less than 23 weeks and 1.25 kilograms at birth. By inserting a special feeding tube with sensors into the stomach, we can measure the electrical activity of the diaphragm (EAdi). By analysing EAdi before and after feeding, we want to directly measure how feeding might affect lung functions. We also want to compare feeding at the usual rate (5-15 minutes) versus a slower rate (90 minutes) to see how their effects on lung functions might differ.

This important study will help us determine the most appropriate treatment for premature babies with apnea related to feeding.

Conditions

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Infant, Premature Apnea

Study Design

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Observational Model Type

CASE_CROSSOVER

Study Time Perspective

PROSPECTIVE

Study Groups

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Observation

Premature infants over 23 weeks of gestation and less than 1.25 kilograms at birth, who are tolerating feedings, and are clinically stable

Insertion of specialized feeding tube for monitoring of EAdi

Intervention Type DEVICE

The specialized feeding tube will be inserted into the esophagus and positioned at the level of the crural diaphragm. EAdi will be measured with miniaturized coated stainless steel electrodes mounted on the feeding tube. The tube is connected to a monitor where EAdi will be recorded continuously throughout the entire study period

Interventions

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Insertion of specialized feeding tube for monitoring of EAdi

The specialized feeding tube will be inserted into the esophagus and positioned at the level of the crural diaphragm. EAdi will be measured with miniaturized coated stainless steel electrodes mounted on the feeding tube. The tube is connected to a monitor where EAdi will be recorded continuously throughout the entire study period

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Preterm infants \>23 weeks gestation
* Birth weight \<1250 grams
* Not requiring full mechanical ventilation
* Tolerating full regular bolus feeding for at least 48 hours

Exclusion Criteria

* Congenital and acquired problem of the gastrointestinal tract
* Phrenic nerve injury and/or diaphragm paralysis
* Esophageal perforation/tracheoesophageal fistula
* Congenital/acquired neurological deficit and/or seizures
* Hemodynamic instability
* Congenital heart disease (including symptomatic patent ductus arteriosus)
* Undergoing treatment for sepsis or pneumonia
* Use of muscle relaxants, narcotic analgesics, or gastric motility agents

Minimum Eligible Age

1 Day

Maximum Eligible Age

12 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

No