Point-of-Care Lung Ultrasound for Prognosis in Critically Ill Infants With Acute Lower Respiratory Tract Infection

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

RECRUITING

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-01-01

Study Completion Date

2025-06-30

Brief Summary

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Prospective, observational multicentric study which aims at identifying lung POCUS (Point of Care UltraSound) findings associated with failure of noninvasive ICU-LRS (Intensive Care Unit Level Respiratory Support) (defined as escalation of settings or need for intubation and invasive mechanical ventilation) in infants requiring noninvasive ICU-LRS in the ICU for bronchiolitis and other LRTI (Low Respiratory Tract Infection) and at identifying lung, pleural, and diaphragm POCUS findings that are associated with a clinical improvement after escalation of ICU-LRS support by comparing POCUS findings from the first 24 hours of ICU stay to a subsequent study 1 day later.

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Detailed Description

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Lower respiratory tract infections, primarily viral bronchiolitis, are a common cause of PICU admission for infants. While overall hospitalization rates for bronchiolitis are declining, ICU admission rates are actually increasing. The trend in respiratory management of critically ill infants with LRTIs has shifted from frequent invasive mechanical ventilation to more common use of non-invasive modalities, including CPAP, BiPap, and HFNC. Currently, the overwhelming majority of infants requiring ICU-level respiratory support (ICU-LRS) for bronchiolitis receive only noninvasive support.

During the past decade, point-of-care lung ultrasound (POCUS) is increasingly being used in both adults and children to enhance diagnostic and prognostic ability in respiratory failure. Lung POCUS is appealing due to the lack of radiation exposure compared to x-rays, the added sensitivity and specificity that it can add compared to traditional imaging to help differentiate consolidation from atelectasis from edema (may all have similar appearance on x-rays), the dynamic nature of the study to evaluate the lung parenchyma, pleura, and diaphragm, and the fact that it can be easily applied and repeated at the bedside to guide adjustments to therapies and evaluate their response. Lung POCUS differs from traditional radiology-based lung ultrasound in that it is focused and goal-directed, is frequently performed serially by the clinician managing the patient at the bedside, and is frequently used to immediately direct care decisions in real-time.

While lung POCUS is quickly becoming a standard of care for adults with respiratory failure, pediatric data, particularly in critically ill infants with bronchiolitis and other lower respiratory tract infections (LRTI) is largely lacking. Investigators from some sites within the BACON research group have begun to evaluate the role of lung POCUS in infants with bronchiolitis. These studies have primarily focused on the emergency department, but they have identified POCUS findings that are associated with clinical deterioration and have developed a pediatric lung ultrasound score that can predict infants who will require ICU-LRS. There are only two pediatric ICU bronchiolitis studies-one looking at the lung/pleura but in invasively ventilated patients only, and the other focused on the diaphragm in patients requiring noninvasive support.

Unfortunately, there are minimal data on infants in the ICU with bronchiolitis, and all of these prior studies are limited by low sample size. Thus, there is a significant knowledge gap about the ability of lung POCUS and these previously identified findings and scoring systems to accurately predict failure of noninvasive ICU-LRS for infants in the ICU with bronchiolitis and other LRTIs. Furthermore, there are no data evaluating the role of lung POCUS in identifying patients who will have a favorable response to adjustments in ICU-LRS settings.

Endpoints of the study are:

1, To identify lung POCUS findings associated with failure of noninvasive ICU-LRS (defined as escalation of settings or need for intubation and invasive mechanical ventilation) in infants requiring noninvasive ICU-LRS in the ICU for bronchiolitis and other LRTI.

2\. To identify lung, pleural, and diaphragm POCUS findings that are associated with a clinical improvement after escalation of ICU-LRS support by comparing POCUS findings from the first 24 hours of ICU stay to a subsequent study 1 day later.

There are no specific safety endpoints for this observational study. Families could end participation by their infant at any time, and the treating physician or investigator could withdraw the patient from the study but there are no pre-specified safety endpoints.

Conditions

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Bronchiolitis Noninvasive Ventilation

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

1. Age \<1 year at the time of hospital admission
2. Admission to PICU for suspected/confirmed LRTI
3. Treatment (within the 1st 12 hours of ICU stay) with noninvasive ICU-LRS for respiratory failure (HFNC \>1L/kg/min, negative pressure, or noninvasive PPV via any interface (CPAP, BiPap, NIMV, etc.)

Exclusion Criteria

1. Invasive ventilation as initial support or within the 1st 12 hours of ICU stay, either via endotracheal tube or tracheostomy
2. Upper respiratory symptoms only (stridor, stertor)
3. Corrected gestational age \<37 weeks at time of ICU admission
4. ICU-LRS for only nonrespiratory reasons (e.g. shock) or for pulmonary edema felt to be solely due to noninfectious causes (cardiogenic, airway obstruction, drowning). Patients presenting with apnea can be included if they have a diagnosis of bronchiolitis or other LRTI
5. Prior inclusion in the study

Minimum Eligible Age

0 Months

Maximum Eligible Age

12 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

No