Bubble CPAP versus ventilator CPAP in preterm neonates with early onset respiratory distress--a randomized controlled trial

Indigenous Bubble Continuous Positive Airway Pressure for Children

How to cite this article: Gupta D, Simalti AK. Indigenous Bubble Continuous Positive Airway Pressure for Children. Indian J Crit Care Med 2023;27(11):788-789.

Risk factors for bronchopulmonary dysplasia infants with respiratory score greater than four: a multi-center, prospective, longitudinal cohort study in China

Bronchopulmonary dysplasia (BPD) is the most common complication of prematurity involving both pre- and post-natal factors. A large, prospective, longitudinal cohort study was conducted to determine whether inflammation-related factors are associated with an increased risk of BPD in preterm infants who were born at a gestational age < 32 weeks, < 72 h after birth and respiratory score > 4. The study included infants from 25 participating hospitals in China between March 1, 2020 and March 31, 2022. The primary outcomes were BPD and severity of BPD at 36 weeks post-menstrual age. A total of 1362 preterm infants were enrolled in the study. After exclusion criteria, the remaining 1088 infants were included in this analysis, of whom, 588 (54.0%) infants were in the BPD group and 500 (46.0%) were in the non-BPD group. In the BPD III model, the following six factors were identified: birth weight (OR 0.175, 95% CI 0.060-0.512; p = 0.001), surfactant treatment (OR 8.052, 95% CI 2.658-24.399; p < 0.001), mean airway pressure (MAP) ≥ 12 cm H2O (OR 3.338, 95% CI 1.656-6.728; p = 0.001), late-onset sepsis (LOS) (OR 2.911, 95% CI 1.514-5.599; p = 0.001), ventilator-associated pneumonia (VAP) (OR 18.236, 95% CI 4.700-70.756; p < 0.001) and necrotizing enterocolitis (NEC) (OR 2.725, 95% CI 1.182-6.281; p = 0.019). Premature infants remained at high risk of BPD and with regional variation. We found that post-natal inflammation-related risk factors were associated with an increased risk of severe BPD, including LOS, VAP, NEC, MAP ≥ 12 cm H2O and use of surfactant.

Improvised bubble continuous positive airway pressure ventilation use in neonates in resource-limited settings: a systematic review and meta-analysis

OBJECTIVES

In the face of limited fiscal and technical resources, improvised methods have been used to provide effective and sustainable ventilatory support in low-resource settings to reduce neonatal mortality associated with respiratory complications. This study assessed the use of improvised bubble continuous positive airway pressure (ibCPAP) ventilation among neonates with respiratory complications and determined its effect on neonatal outcomes in low- and middle-income countries (LMICs).

CONTENT

Hospital-based studies conducted between 2010 and 2020 in LMICs were reviewed. Rayyan® software for systematic review was used for screening and article selection. We used Stata® Statacorp Texas USA software to estimate pooled prevalence, proportion estimates, weighted mean differences and 95% Confidence Interval (CI), using the random effects model.

SUMMARY

A total of 193 articles were generated and 125 were reviewed. Thirteen articles with 806 neonates on ibCPAP ventilation were included. The pooled prevalence of ibCPAP use was 7.0% (95% CI: 3.0%-13.0%). There was a significant difference in mean oxygen saturation before and after ibCPAP use (-1.34% [95% CI: -1.65% to -1.02%, p<0.01). The duration of oxygen requirement among neonates on ibCPAP was 6.5 hours less than controls (0.27 days [95%CI: -0.49 to -0.05, p<0.01).

OUTLOOK

IbCPAP had no effect on the respiratory rate, duration of admission, mortality and survival. IbCPAP use in LMIC hospitals is low and its use improved oxygen saturation and duration on oxygen among the neonates, but had no impact on length of stay, respiratory rate, mortality or survival.

State of the art on neonatal noninvasive respiratory support: How physiological and technological principles explain the clinical outcomes

Noninvasive respiratory support has gained significant popularity in neonatal units because of its potential to reduce lung injury associated with invasive mechanical ventilation. To minimize lung injury, clinicians aim to apply for noninvasive respiratory support as early as possible. However, the physiological background and the technology behind such support modes are not always clear, and many open questions remain regarding the indications of use and clinical outcomes. This narrative review discusses the currently available evidence for various noninvasive respiratory support modes applied in Neonatal Medicine in terms of physiological effects and indications. Reviewed modes include nasal continuous positive airway pressure, nasal high-flow therapy, noninvasive high-frequency oscillatory ventilation, nasal intermittent positive pressure ventilation (NIPPV), synchronized NIPPV and noninvasive neurally adjusted ventilatory assist. To enhance clinicians' awareness of each support mode's strengths and limitations, we summarize technical features related to the functioning mechanisms of devices and the physical properties of the interfaces commonly used for providing noninvasive respiratory support to neonates. We finally address areas of current controversy and suggest possible areas of research for implementing noninvasive respiratory support in neonatal intensive care units.

A novel low-cost bubble continuous positive airway pressure device with pressure monitoring and controlling system for low resource settings

Background

Currently bubble continuous positive airway pressure (bCPAP) is commonly used in low resource settings to treat respiratory distress. However, the accumulation of condensate in the patient's exhalation limb during operation could significantly increase pressure delivered to the body, which can lead to severe respiratory failure in the infant. The objective of this research was to develop a novel low-cost bCPAP device that can monitor and control the pressure delivered to infants.

Methods

When the neonate expires, the pressure sensor inside the expiratory limb measures the instant positive end-expiratory pressure. The microcontroller decides whether to turn the relay to switch the path of expiration between the two expiratory tubes connected to the valve outlets. This depends on the pressure reading and the cutoff pressure value inserted by the physician.

Results

The system was tested for accuracy, safety, cost, ease of use, and durability. The prototype was accurate in eight iterations at eight different depths of water that were made to monitor and control the pressure. It was safe and provided suitable pressure for the neonate, and the prototype was built in less than 193 USD.

Conclusions

The performance testing of the device demonstrated accurate and safe control and monitoring of continuous positive air pressure (CPAP) and oxygen levels with humidity levels safe for infants. The device provides humidified, blended, and pressurized gas for the patient. It allows physicians to easily monitor and control the accumulation of condensate in the exhalation limb of the CPAP machine accurately and safely.

Respiratory distress syndrome management in resource limited settings-Current evidence and opportunities in 2022

The complications of prematurity are the leading cause of neonatal mortality worldwide, with the highest burden in the low- and middle-income countries of South Asia and Sub-Saharan Africa. A major driver of this prematurity-related neonatal mortality is respiratory distress syndrome due to immature lungs and surfactant deficiency. The World Health Organization's Every Newborn Action Plan target is for 80% of districts to have resources available to care for small and sick newborns, including premature infants with respiratory distress syndrome. Evidence-based interventions for respiratory distress syndrome management exist for the peripartum, delivery and neonatal intensive care period- however, cost, resources, and infrastructure limit their availability in low- and middle-income countries. Existing research and implementation gaps include the safe use of antenatal corticosteroid in non-tertiary settings, establishing emergency transportation services from low to high level care facilities, optimized delivery room resuscitation, provision of affordable caffeine and surfactant as well as implementing non-traditional methods of surfactant administration. There is also a need to optimize affordable continuous positive airway pressure devices able to blend oxygen, provide humidity and deliver reliable pressure. If the high prematurity-related neonatal mortality experienced in low- and middle-income countries is to be mitigated, a concerted effort by researchers, implementers and policy developers is required to address these key modalities.

Evidence-based interventions to reduce mortality among preterm and low-birthweight neonates in low-income and middle-income countries: a systematic review and meta-analysis

Background

Preterm birth is the leading cause of under-five-mortality worldwide, with the highest burden in low-income and middle-income countries (LMICs). The aim of this study was to synthesise evidence-based interventions for preterm and low birthweight (LBW) neonates in LMICs, their associated neonatal mortality rate (NMR), and barriers and facilitators to their implementation. This study updates all existing evidence on this topic and reviews evidence on interventions that have not been previously considered in current WHO recommendations.

Methods

Six electronic databases were searched until 3 March 2020 for randomised controlled trials reporting NMR of preterm and/or LBW newborns following any intervention in LMICs. Risk ratios for mortality outcomes were pooled where appropriate using a random effects model (PROSPERO registration number: CRD42019139267).

Results

1236 studies were identified, of which 49 were narratively synthesised and 9 contributed to the meta-analysis. The studies included 39 interventions in 21 countries with 46 993 participants. High-quality evidence suggested significant reduction of NMR following antenatal corticosteroids (Pakistan risk ratio (RR) 0.89; 95% CI 0.80 to 0.99|Guatemala 0.74; 0.68 to 0.81), single cord (0.65; 0.50 to 0.86) and skin cleansing with chlorhexidine (0.72; 0.55 to 0.95), early BCG vaccine (0.64; 0.48 to 0.86; I² 0%), community kangaroo mother care (OR 0.73; 0.55 to 0.97; I² 0%) and home-based newborn care (preterm 0.25; 0.14 to 0.48|LBW 0.42; 0.27 to 0.65). No effects on perinatal (essential newborn care 1.02; 0.91 to 1.14|neonatal resuscitation 0.95; 0.84 to 1.07) or 7-day NMR (essential newborn care 1.03; 0.83 to 1.27|neonatal resuscitation 0.92; 0.77 to 1.09) were observed after training birth attendants.

Conclusion

The findings of this study encourage the implementation of additional, evidence-based interventions in the current (WHO) guidelines and to be selective in usage of antenatal corticosteroids, to reduce mortality among preterm and LBW neonates in LMICs. Given the global commitment to end all preventable neonatal deaths by 2030, continuous evaluation and improvement of the current guidelines should be a priority on the agenda.

Experiences with implementation of continuous positive airway pressure for neonates and infants in low-resource settings: A scoping review

Background

Continuous positive airway pressure (CPAP) is the gold standard of care in providing non-invasive positive pressure support to neonates in respiratory distress in high-resource settings. While safety has been demonstrated in low-resource settings, there is a lack of knowledge on the barriers and facilitators to proper implementation.

Objective

To identify and describe the barriers, facilitators, and priorities for future implementation of CPAP for neonates and infants in low-resource settings.

Methods

A systematic search (database inception to March 6, 2020) was performed on MEDLINE, Embase, Web of Science, CINAHL, Global Health, and the WHO Global Index Medicus using PRISMA-ScR guidelines. Original research articles pertaining to implementation of CPAP devices in low-resource settings, provider or parent perspectives and experiences with CPAP, cost-benefit analyses, and cost-effectiveness studies were included. Inductive content analysis was conducted.

Findings

1385 article were screened and 54 studies across 19 countries met inclusion criteria. Six major themes emerged: device attributes, patient experiences, parent experiences, provider experiences, barriers, and facilitators. Nasal trauma was the most commonly reported complication. Barriers included unreliable electricity and lack of bioengineering support. Facilitators included training, mentorship and empowerment of healthcare providers. Device design, supply chain infrastructure, and training models were imperative to the adoption and sustainability of CPAP.

Conclusion

Sustainable implementation of CPAP in low resource settings requires easy-to-use devices, ready access to consumables, and holistic, user-driven training. Further research is necessary on standardizing metrics, interventions that support optimal provider performance, and conditions needed for successful long-term health system integration.

Non-Invasive Ventilatory Strategies to Decrease Bronchopulmonary Dysplasia-Where Are We in 2021?

Recent advances in neonatology have led to the increased survival of extremely low-birth weight infants. However, the incidence of bronchopulmonary dysplasia (BPD) has not improved proportionally, partly due to increased survival of extremely premature infants born at the late-canalicular stage of lung development. Due to minimal surfactant production at this stage, these infants are at risk for severe respiratory distress syndrome, needing prolonged ventilation. While the etiology of BPD is multifactorial with antenatal, postnatal, and genetic factors playing a role, ventilator-induced lung injury is a major, potentially modifiable, risk factor implicated in its causation. Infants with BPD are at a higher risk of developing complications including sepsis, pulmonary arterial hypertension, respiratory failure, and death. Long-term problems include increased risk of hospital readmissions, respiratory infections, and asthma-like symptoms during infancy and childhood. Survivors who have BPD are also at increased risk of poor neurodevelopmental outcomes. While the ultimate solution for avoiding BPD lies in the prevention of preterm births, strategies to decrease its incidence are the need of the hour. It is time to focus on gentler modes of ventilation and the use of less invasive surfactant administration techniques to mitigate lung injury, thereby potentially decreasing the burden of BPD. In this article, we discuss the use of non-invasive ventilation in premature infants, with an emphasis on studies showing an effect on BPD with different modes of non-invasive ventilation. Practical considerations in the use of nasal intermittent positive pressure ventilation are also discussed, considering the significant heterogeneity in clinical practices and management strategies in its use.

Bubble bilevel ventilation facilitates gas exchange in anesthetized rabbits

BACKGROUND

Bubble continuous positive airway pressure is an established therapy for infants in respiratory distress. In resource-limited settings, few treatment options exist for infants requiring further respiratory support. A bubble bilevel device has been developed to provide nonelectric, time-cycled, pressure-limited respiratory support. We compared the efficacy of bubble bilevel ventilation with conventional mechanical ventilation in sedated rabbits.

METHODS

Six adult rabbits under inhaled isoflurane general anesthesia were ventilated by alternating intervals of conventional and bubble bilevel ventilation for three 10-15-min periods. During each period, interval arterial blood gas (ABG) measurements were obtained after at least 10 min on the respective mode of ventilation.

RESULTS

The bubble bilevel system was able to deliver the following pressures: 20/7, 15/5, 12/5, 8/5 cm H₂O. The estimated differences in arterial blood gas values on bubble bilevel vs. ventilator were as follows (normalized values): pH 7.41 vs. 7.40, pCO₂ 37.7 vs. 40, pO₂ 97.6 vs. 80. In addition, the bubble bilevel ventilation delivered consistent pressure waveforms without interruption for over 60 min on two rabbits.

CONCLUSION

This study demonstrates promising in vivo results on the efficacy of a novel bubble bilevel device, which may prove useful for infants in respiratory distress.

IMPACT

Given the lack of personnel, funds or infrastructure to provide neonatal mechanical ventilation in resource-limited settings, additional low-cost, low-tech treatments are necessary to save infant lives. Bubble bilevel ventilation reliably delivers two levels of airway pressure to anesthetized rabbits resulting in normalization of blood gases comparable to those achieved on a traditional ventilator. If proven effective, simple technologies like this device have the potential to significantly impact neonatal mortality due to respiratory distress globally.

Bubble Nasal Continuous Positive Airway Pressure (bNCPAP): An Effective Low-Cost Intervention for Resource-Constrained Settings

Preterm birth complications are responsible for almost one-third of the global neonatal mortality burden, and respiratory distress syndrome remains the single most common cause of these preventable deaths. Since its inception, almost half a century ago, nasal continuous positive airway pressure (NCPAP) has evolved to become the primary modality for neonatal respiratory care in both the developed and developing world. Although evidence has demonstrated the effectiveness of low-cost bubble NCPAP in reducing newborn mortality, its widespread use is yet to be seen in resource-constrained settings. Moreover, many tertiary hospitals in developing countries still utilise an inexpensive locally assembled bNCPAP system of unknown efficacy and safety. This review provides a brief overview of the history, physiological benefits, indications, contraindications, and complications of bNCPAP. Evidence regarding the effectiveness of low-cost bNCPAP in the neonatal intensive care unit is also summarised. The article further details a locally assembled bNCPAP system used in resource-constrained settings and highlights the care package for neonates receiving bNCPAP, failure criteria, and strategies for weaning.

Bubble versus other continuous positive airway pressure forms: a systematic review and meta-analysis

BACKGROUND

Use of bubble continuous positive airway pressure (CPAP) has generated considerable interest in neonatal care, but its comparative effectiveness compared with other forms of CPAP, especially in developed countries, remains unclear.

OBJECTIVE

To systematically review and meta-analyse short-term clinical outcomes among preterm infants treated with bubble CPAP vs all other forms of CPAP.

METHODS

Prospective experimental studies published from 1995 onward until October 2018 comparing bubble versus other CPAP forms in preterm neonates <37 weeks' gestational age were included after a systematic review of multiple databases using pre-specified search criteria.

RESULTS

A total of 978 articles were identified, of which 19 articles were included in meta-analyses. Of these, 5 had a high risk of bias, 8 had unclear risk and 6 had low risk. The risk of the primary outcome (CPAP failure within 7 days) was lower with bubble CPAP (0.75; 95% CI 0.57 to 0.98; 12 studies, 1194 subjects, I²=21%). Among secondary outcomes, only nasal injury was higher with use of bubble CPAP (risk ratio (RR) 2.04, 95% CI 1.33 to 3.14; 9 studies, 983 subjects; I²=42%) whereas no differences in mortality (RR 0.82, 95% CI 0.47 to 1.92; 9 studies, 1212 subjects, I²=20%) or bronchopulmonary dysplasia (BPD) (RR 0.8, 95% CI 0.53 to 1.21; 8 studies, 816 subjects, I²=0%) were noted.

CONCLUSION

Bubble CPAP may lead to lower incidence of CPAP failure compared with other CPAP forms. However, it does not appear to translate to improvement in mortality or BPD and potential for nasal injury warrants close monitoring during clinical application.

TRIAL REGISTRATION NUMBER

CRD42019120411.

Evidence base multi-discipline critical strategies toward better tomorrow for very preterm infants

Despite advances in neonatal intensive care in the recent decade, a large number of very preterm infants (VPIs) remain at risk for significant neurodevelopmental impairment (NDI). Given that there are many interventions need to be implemented during the critical perinatal period so that complications of these vulnerable VPIs could be minimized, it is urgent to develop multi-discipline strategies based on evidence to be carried out. The objective of this new term evidence-based perinatal critical strategies (EBPCS), is to provide beneficial intervention towards better neurodevelopmental outcomes, specifically for preterm infants below 28 weeks gestational age. EBPCS is defined as the management of the VPIs during the perinatal period which would include antenatal counseling with team briefing and share decision making, treat the chorioamnionitis, antenatal MgS04, antenatal steroid, delayed cord clamping/milking, neonatal resuscitation team preparation, prevention of hypothermia, immediate respiratory support with continuous positive airway pressure at delivery room, less invasive surfactant administration, early surfactant with budesonide therapy, support of cardiovascular system, early initiate of probiotics administration, early caffeine, early parenteral and enteral nutrition, promptly initiating antibiotics. These critical strategies will be discussed detail in the text; nonetheless, standardized protocols, technical skills and repeated training are the cornerstones of successful of EBPCS. Further experience from different NICU is needed to prove whether these very complicate and comprehensive perinatal critical strategies could translate into daily practice to mitigate the incidence of NDI in high-risk VPIs.

Treatment outcomes of Pumani bubble-CPAP versus oxygen therapy among preterm babies presenting with respiratory distress at a tertiary hospital in Tanzania-Randomised trial

BACKGROUND

Respiratory distress syndrome (RDS) is the most common respiratory disease in premature babies and the major cause of morbidity and mortality among preterm babies. Effective treatment of these babies requires exogenous surfactant and/or mechanical ventilation but these are of limited availability in low and middle income countries. A cheaper, simpler and more accessible treatment for preterms with RDS called bubble-continuous positive airway pressure (bCPAP) has been reported to be effective in treating RDS in preterm babies with varying levels of effectiveness ranging from 42% to 85%. We aimed to implement and determine the efficacy of bCPAP and its immediate outcomes as compared to oxygen therapy in preterm babies presenting with respiratory distress at a tertiary hospital in Tanzania.

METHOD

A randomized control trial, conducted from December 2016 to May 2017, included all preterm babies admitted at the neonatal care unit presenting with signs of respiratory distress and meeting the inclusion criteria. The primary outcome was survival while the secondary outcomes were treatment duration, duration of hospital stay and treatment complications.

RESULTS

A total of 824 babies were admitted in the neonatal care unit during the study period. Of these, 187 babies were preterm and 48 babies were recruited and randomized (25 bCPAP vs 23 oxygen). The overall survival to discharge for all eligible participants (n = 48) was 58.2% compared to those who adhered to treatment protocol (n = 45, 62.2%). Babies in the bCPAP group had higher survival (17/22; 77.3%) as compared to their counterparts in the oxygen therapy group (11/23; 47.8%). Babies treated with bCPAP had 52% lower risk of death (crude HR 0.48, 95% CI = 0.16-1.43) compared to babies receiving oxygen therapy. The median duration of treatment for babies in the oxygen therapy group was 2 (Range 0-16) days compared to 2 (Range 0-5) days in the bCPAP group. The median duration of hospital stay for babies receiving bCPAP was 14 (range 7-43) days. Nasal bleeding was commonly observed among babies in the bCPAP group as compared to those in the oxygen therapy group.

CONCLUSION

This study revealed that treatment with bCPAP had a 30% clinical improvement in survival to discharge. Our findings highlight the role of bCPAP in reducing neonatal mortality in resource limited settings but further adequately powered studies in this or similar settings are required.

To Bubble or Not? A Systematic Review of Bubble Continuous Positive Airway Pressure in Children in Low- and Middle-Income Countries

BACKGROUND

Bubble-continuous positive airway pressure (bCPAP) is a simple, low-cost ventilation therapy with the potential to lower morbidity and mortality in children in low- and middle-income countries (LMICs).

AIM

To examine (i) whether bCPAP is a safe and effective treatment for children in all age-groups presenting with respiratory distress from any cause, (ii) LMIC-implemented bCPAP devices including their technical specifications and costs and (iii) the setting and level of health care bCPAP has been implemented in.

METHOD

A systematic search was performed of Embase, PubMed and Web of Science. Inclusion criteria: bCPAP for children with respiratory distress in all age groups in LMICs. Database searches were performed up to 1 November 2018.

RESULTS

A total of 24 publications were eligible for the review. For neonates bCPAP was superior in improving survival and clinical progression compared with oxygen therapy and mechanical ventilation (MV). In two studies bCPAP was superior to low flow oxygen in reducing mortality in children 29 days to 13 months. Respiratory rate reductions were significant across all ages. Only three of six studies in children of all ages evaluated serious adverse events. In 12 studies comprising 1338 neonates treated with bCPAP, pneumothorax was reported 27 times. The majority of studies were carried out at tertiary hospitals in middle-income countries and 50% implemented the most expensive bCPAP-device.

CONCLUSION

In neonates and children below 13 months bCPAP is a safe treatment improving clinical outcomes and reducing the need for MV, without an increase in mortality. High-quality studies from non-tertiary settings in low-income countries are needed.

Non-invasive Respiratory Support of the Premature Neonate: From Physics to Bench to Practice

Premature births continue to rise globally with a corresponding increase in various morbidities among this population. Rates of respiratory distress syndrome and the consequent development of Bronchopulmonary Dysplasia (BPD) are highest among the extremely preterm infants. The majority of extremely low birth weight premature neonates need some form of respiratory support during their early days of life. Invasive modes of respiratory assistance have been popular amongst care providers for many years. However, the practice of prolonged invasive mechanical ventilation is associated with an increased likelihood of developing BPD along with other comorbidities. Due to the improved understanding of the pathophysiology of BPD, and technological advances, non-invasive respiratory support is gaining popularity; whether as an initial mode of support, or for post-extubation of extremely preterm infants with respiratory insufficiency. Due to availability of a wide range of modalities, wide variations in practice exist among care providers. This review article aims to address the physical and biological basis for providing non-invasive respiratory support, the current clinical evidence, and the most recent developments in this field of Neonatology.

Neonatal oxygen therapy in low- and middle-income countries: a pragmatic review

Background

We assessed and summarized the peer-reviewed literature on the state of neonatal oxygen therapy in low and lower-middle income countries.

Methods

A literature search was performed in 3 online databases (Pub Med, EMBASE, CAB Global Health) and amongst USAID’s Service Provision Assessment (SPA) reports for publications pertaining to neonatal oxygen therapy in low and lower-middle income countries over the past 10 years (2007-2017).

Results

Our search yielded 474 records, of which 26 were relevant and included in the review. Maintenance and indirect costs associated with the procurement of oxygen may constitute barriers to oxygen supply. The quality of therapy provided to neonates was affected by factors including a lack of necessary equipment at neonatal healthcare facilities and high indirect costs associated with the procurement of oxygen. Pulse oximeters used for monitoring of oxygen therapy were available in healthcare facilities, but there is scant data on the frequency of that monitoring. There are some hospitals that deliver neonatal oxygen therapy without any necessary monitoring equipment. Prevalence of retinopathy of prematurity among neonates with risk factors ranged from 11.9-47.2%, which is notably higher than published rates in neonates of similar gestational age being treated in high-income countries.

Conclusion

There is a lack of data that provides direct estimates of availability of neonatal oxygen equipment and related clinical applications of oxygen therapy across health systems, particularly around the usage and availability of necessary monitoring equipment. Attention to the maintenance of oxygen and ancillary equipment for neonates and quality improvement initiatives to promote adherence to those guidelines can reduce the morbidity and mortality burden among neonates in low and lower-middle income countries.

Non-invasive respiratory support for preterm infants following extubation from mechanical ventilation. A narrative review and guideline suggestion

The recent introduction of different non-invasive ventilation modes for preterm has decreased the need for intubation, invasive ventilation and sedation. However, specific guidelines for each non-invasive mode are still lacking. This paper reviews available evidence for each of the commonly used noninvasive mode. Electronic search was carried out as a step forward towards a more comprehensive and detailed neonatal noninvasive ventilation guideline.

Decreasing Chronic Lung Disease Associated with Bubble CPAP Technology: Experience at Five Years

Introduction:

Bubble continuous positive airway pressure (bCPAP) is associated with a decreased risk for chronic lung disease (CLD) in preterm neonates. This report examined the effectiveness of adopting bCPAP to reduce respiratory complications and medication usage in a community hospital NICU.

Methods:

The efficacy of bCPAP was assessed by retrospective examination and comparison of 45 neonates who received bCPAP and 87 neonates who received conventional ventilation only. Data on medication usage were also collected and analyzed.

Results:

After introduction of the bCPAP protocol, the median number of days on oxygen decreased in the bCPAP group compared with the conventional ventilation only group (median = 33 days, IQR = 7.5–66 vs median = 0, IQR = 0–0; P < 0.001). The exposure to conventional ventilation decreased in the bCPAP group compared with the conventional ventilation only group (median = 18 days, IQR = 5–42.5 vs median = 0, IQR = 0–7; P < 0.001). Postimplementation of bCPAP revealed decreases in CLD from 26 (30%) in the conventional ventilation only group to 2 (4%) in the bCPAP group (P = 0.002); there was also a significant decrease in the use of sedative medications in the bCPAP group compared with the conventional ventilation only group (mean = 5.20 doses, SD = 31.97 vs mean = 1.43, SD = 9.98; P < 0.001).

Conclusion:

The use of bCPAP results in significant decreases in the use of conventional ventilation, the risk for CLD, and the need for sedative medication.

Availability and use of continuous positive airway pressure (CPAP) for neonatal care in public health facilities in India: a cross-sectional cluster survey

OBJECTIVES

To determine the availability of continuous positive airway pressure (CPAP) and to provide an overview of its use in neonatal units in government hospitals across India.

SETTING

Cross-sectional cluster survey of a nationally representative sample of government hospitals from across India.

PRIMARY OUTCOMES

Availability of CPAP in neonatal units.

SECONDARY OUTCOMES

Proportion of hospitals where infrastructure and processes to provide CPAP are available. Case fatality rates and complication rates of neonates treated with CPAP.

RESULTS

Among 661 of 694 government hospitals with neonatal units that provided information on availability of CPAP for neonatal care, 68.3% of medical college hospitals (MCH) and 36.6% of district hospitals (DH) used CPAP in neonates. Assessment of a representative sample of 142 hospitals (79 MCH and 63 DH) showed that air-oxygen blenders were available in 50.7% (95% CI 41.4% to 60.9%) and staff trained in the use of CPAP were present in 56.0% (45.8% to 65.8%) of hospitals. The nurse to patient ratio was 7.3 (6.4 to 8.5) in MCH and 6.6 (5.5 to 8.3) in DH. Clinical guidelines were available in 31.0% of hospitals (22.2% to 41.4%). Upper oxygen saturation limits of above 94% were used in 72% (59.8% to 81.6%) of MCH and 59.3% (44.6% to 72.5%) of DH. Respiratory circuits were reused in 53.8% (42.3% to 63.9%) of hospitals. Case fatality rate for neonates treated with CPAP was 21.4% (16.6% to 26.2%); complication rates were 0.7% (0.2% to 1.2%) for pneumothorax, 7.4% (0.9% to 13.9%) for retinopathy and 1.4% (0.7% to 2.1%) for bronchopulmonary dysplasia.

CONCLUSIONS

CPAP is used in neonatal units across government hospitals in India. Neonates may be overexposed to oxygen as the means to detect and treat consequences of oxygen toxicity are insufficient. Neonates may also be exposed to nosocomial infections by reuse of disposables. Case fatality rates for neonates receiving CPAP are high. Complications might be under-reported. Support to infrastructure, training, guidelines implementation and staffing are needed to improve CPAP use.

Non-invasive high flow oscillatory ventilation in comparison with nasal continuous positive pressure ventilation for respiratory distress syndrome, a literature review

BACKGROUND

Noninvasive high-frequency oscillatory ventilation (NHFOV) keeps the lung open with add-on effective rhythmic oscillations in addition to allowing spontaneous breathing. This review aims at reconstructing the different pieces of available research articles and evidence into a more solid collective evidence for NHFOV in preterm infants with respiratory distress syndrome (RDS).

METHODS

A thorough systemic search was conducted in Medline, Embase, Web of Science, Google Scholar, CINAHL, and Cochrane. Randomized controlled trials (RCTs) on preterm infants with RDS comparing NHFOV with nasal continuous positive airway pressure (NCPAP) in terms of PCO₂ change, need for ventilation, duration of respiratory support, mortality air leak, or BPD were included. Data quality assessment and meta-analyses were carried out.

RESULTS

Five RCTs involving 270 preterm infants included in the review. PCO₂ relatively decreased on NHFOV (MD = 3.84, confidence interval (CI) 7.32-0.35, p = .03). On the other hand, relative risk (RR) of intubation was unquestionably decreased with NHFOV in comparison with NCPAP (RR  =  0.43, CI 0.25-0.75, p = .003) without statistical heterogeneity I² = 0%. Although the risk of mortality was less in NHFOV, the difference was statistically insignificant (RR = 0.72, CI 0.24-2.18, p = .56). Other outcomes reported in single studies only. Duration of respiratory support was significantly shorter in NHFOV compared with NCPAP (37.35 ± 8.96 versus 49.77 ± 10.33, p = .009), whereas air leak and BPD were reported in very few cases without a significant difference between the two interventions.

CONCLUSIONS

NHFOV improved the PCO₂ elimination and decreased the risk of intubation without a significant change in mortality compared with NCPAP.

Neonatal CPAP for Respiratory Distress Across Malawi and Mortality

OBJECTIVES

Our aim in this observational study was to monitor continuous positive airway pressure (CPAP) usage and outcomes in newborn wards at 26 government hospitals in Malawi after the introduction of CPAP as part of a quality-improvement initiative. CPAP was implemented in 3 phases from 2013 through 2015.

METHODS

Survival to discharge was analyzed for neonates treated with nasal oxygen and/or CPAP with admission weights of 1 to 2.49 kg at 24 government hospitals with transfer rates <15%. This analysis includes neonates admitted with respiratory illness for 5.5 months before (621 neonates) and 15 months immediately after CPAP implementation (1836 neonates). A follow-up data analysis was completed for neonates treated with CPAP at all hospitals during an additional 11 months (194 neonates).

RESULTS

On implementation of CPAP, survival to discharge improved for all neonates admitted with respiratory distress (48.6% vs 54.5%; P = .012) and for those diagnosed with respiratory distress syndrome (39.8% vs 48.3%; P = .042). There were no significant differences in outcomes for neonates treated with CPAP during the implementation and follow-up periods. Hypothermia on admission was pervasive and associated with poor outcomes. Neonates with normal mean temperatures during CPAP treatment experienced the highest survival rates (65.7% for all neonates treated with CPAP and 60.0% for those diagnosed with respiratory distress syndrome).

CONCLUSIONS

A nurse-led CPAP service can improve outcomes for neonates in respiratory distress in low-resource settings. However, the results show that real-world improvements in survival may be limited without access to comprehensive newborn care, especially for small and sick infants.

Improving Respiratory Support Practices to Reduce Chronic Lung Disease in Premature Infants

Supplemental Digital Content is available in the text.

Introduction:

We implemented a bundle of respiratory care practices and optimized delivery of continuous positive airway pressure (CPAP) to reduce the incidence of chronic lung disease (CLD) among very low birth weight (VLBW) infants born before 33 weeks gestation.

Methods:

Our multidisciplinary task force utilized 6 plan-do-study-act cycles to test our interventions. The primary outcome was the quarterly percentage of infants diagnosed with CLD; other outcomes included the percentage of infants initially managed with CPAP, intubation <72 hours of age, use of a nasal cannula, and days of ventilation, oxygen, and/or CPAP. Process measures included compliance with each of the 5 components of the bundle; balancing measures included mortality and complications of prematurity.

Results:

Demographics were similar in the 55 infants born before and 76 infants born after the task force interventions, except for gestational age, which was lower before. CLD decreased by 55.5% (from 37.5% to 16.7%). Quarterly percentage of infants requiring intubation decreased from 87.5% to 40.8%. Quarterly average days of ventilation decreased from 11.2 to 6.1, and days of supplemental oxygen declined from 44.1 to 25.4, while the use of CPAP increased. There were no differences in adverse events including mortality, pneumothorax, use of postnatal steroids, or any retinopathy of prematurity. The incidence of patent ductus arteriosus declined from 60% to 33% (P < 0.01).

Conclusions:

We reduced the incidence of CLD among our very low birth weight infants born before 33 weeks gestation by over 50% without increasing any measured adverse outcomes. The incidence of patent ductus arteriosus declined.

Use of a modified bubble continuous positive airway pressure (bCPAP) device for children in respiratory distress in low- and middle-income countries: a safety study

Background: While bubble continuous positive airway pressure (bCPAP) is commonly used in low- and middle-income countries (LMIC) to support neonates with respiratory distress, there are limited non-invasive support options for non-neonatal children. Aim: To demonstrate safety of a new device designed to support children during respiratory distress in LMIC. Methods: A paediatric bCPAP device was designed called SEAL-bCPAP (Simplified Ear-plug Adapted-bCPAP). SEAL-bCPAP is constructed from inexpensive, easily obtainable materials. The nasal prong interface was modified from previously described neonatal bCPAP set-ups using commercial ear-plug material to improve nasal seal. A prospective interventional study was conducted to evaluate safety in children with respiratory distress treated with SEAL-bCPAP. Patients aged 30 days to 5 years presenting to a hospital in northern Uganda from July 2015 to June 2016 were screened. Those with moderate-severe respiratory distress and/or hypoxia despite nasal cannula oxygen were eligible for study. Enrolled patients were supported with SEAL-bCPAP until respiratory improvement or death. Complications attributable to SEAL-bCPAP were recorded. Clinical outcomes were compared with historical control pre-trial data. Results: Eighty-three of 87 enrolled patients were included in the final analysis. No patients had significant SEAL-bCPAP complications. Five patients had mild complications which resolved (four with nasal irritation and one with abdominal distention). Trial patients had significant (p < 0.0001) improvement in their TAL score, respiratory rate and O₂sat after 2 h of SEAL-bCPAP. Fifty-two of 64 patients (62.7%) with severe illness at Time1 did not have severe illness at Time2 (after 2 h of SEAL-bCPAP) (p < 0.0001). Unadjusted mortality rates were 12.2% (6/49) and 9.6% (8/83), respectively, for pre-trial (historical control) and trial patients (p = 0.64); the study was not powered to show efficacy. Conclusions: The SEAL-bCPAP device is safe for treatment of respiratory distress in non-neonatal children in LMIC. There is a trend toward decreased mortality that should be evaluated with adequately powered clinical trials.

Feasibility of high-flow nasal cannula implementation for children with acute lower respiratory tract disease in rural Kenya

Background: High-flow nasal cannula (HFNC) is a well-established respiratory support device in high-income countries, but to our knowledge, its use in sub-Saharan Africa has not been reported. This feasability study describes the implementation process of HFNC in rural Kenya. Methods: HFNC was implemented in intensive care and high dependency units at Kijabe Hospital, Kenya for children with acute lower respiratory disease. Rate of intubation was compared with historical controls and challenges of implementation described. Results: Fifteen patients received HFNC between January and November 2016, and compared to 25 historical control patients. Both groups had many comorbidities, and control patients were significantly younger. There were no significant differences in clinical outcome between the groups: 5 (33%) HFNC vs 12 (48%) controls required intubation; 10 (67%) HFNC vs 22 (88%) controls survived to discharge; and the HFNC required 3 vs the controls' 4 days on respiratory support. The greatest technical issues encountered were large pressure differences between air from a wall outlet (wall air) and oxygen and an inability to automatically refill humidifier water chambers. Conclusion: HFNC in limited-resource settings is feasible but there were technical challenges and concern about the increased workload. The small sample size, heterogeneous population, availability of oxygen and blending of wall air at the study site limit inferences for other sites in low- and middle-income countries. Abbreviations: ALRI, acute lower respiratory infection; CPAP, continuous positive airway pressure; ETAT, emergency triage, assessment and treatment; HDU, high dependency unit; HFNC, high-flow nasal cannula; HIC, high-income country; HR, heart rate; ICU, intensive care unit; LMIC, low- and middle-income countries; PSI, pounds per square inch; RR, respiratory rate; mRISC, modified Respiratory Index of Severity in Children.

Bubble CPAP devices for infants and children in resource-limited settings: review of the literature

Background: Early management of respiratory distress is critical to reducing mortality in infants and children in resource-limited settings. Bubble continuous positive airway pressure (bCPAP) can offer effective and affordable non-invasive respiratory support. Objective: To determine the best physical components of bubble CPAP circuits for respiratory support of children in low-resource settings. Methods: Using PubMed, CINAHL and LILACS, studies of any design in any language published before June 2017 which examined the physical components of bCPAP circuits were identified and reviewed. Results: After screening, the review included 45 articles: 17 clinical trials, 11 literature reviews, 10 technical assessments of bCPAP components, three reports of real-world implementation in low-resource settings, three cost analyses and one case report. There is no ideal bCPAP circuit for all settings and patients, but some choices are generally better than others in designing a circuit for low-resource settings. Oxygen concentrators are usually the best source of oxygen. As yet, there is no affordable and accurate oxygen blender. Nasal prongs are the simplest patient interface to use with the fewest complications but are not the cheapest option. Expiratory limbs should be at least 1 cm in diameter. Home-made pressure generators are effective, safe and affordable. Conclusion: This narrative review found many studies which evaluated the real clinical outcomes with bCPAP in the target population as well as technical comparison of bCPAP components. However, many studies were not blinded or randomised and there was significant heterogeneity in design and outcome measures. Abbreviations: bCPAP, bubble continuous positive airway pressure; CPAP, continuous positive airway pressure; FiO₂, fractional oxygen concentration; HFNC, high-flow nasal cannula; HIC, high-income countries; LMIC, low- and middle-income countries; NP, nasopharyngeal; O₂, oxygen; PEEP, positive end-expiratory pressure; PICO, Population, Intervention, Comparison and Outcome.

Evidence Regarding the Use of Bubble Continuous Positive Airway Pressure in the Extremely Low Birth-Weight Infant: Benefits, Challenges, and Implications for Nursing Practice

BACKGROUND

Gentle ventilation with optimal oxygenation is integral to prevention of chronic lung disease in the extremely low birth-weight (ELBW) infant. Various types of noninvasive ventilation are used in neonatal intensive care units worldwide. Bubble continuous positive airway pressure (BCPAP) has been in use in newborn intensive care since 1975.

PURPOSE

To synthesize the current evidence on the use of BCPAP in the ELBW infant and its relationship to outcomes, particularly morbidity and mortality.

METHODS/SEARCH STRATEGIES

A literature review was completed using PubMed, EMBASE, CINAHL, and Cochrane with a focus on BCPAP use in the ELBW population.

FINDINGS/RESULTS

No study found was exclusive to the ELBW population. All studies ranged from ELBW to full-term neonates. Studies supported the use of BCPAP in the ELBW, demonstrating decreased incidence of chronic lung disease and barotrauma through the use of oscillation and permissive hypercapnia.

IMPLICATIONS FOR PRACTICE

Literature supports the use of nasal bubble CPAP in the ELBW population. Barriers such as septal erosion, pneumothorax, inconsistent pressures, and air in the abdomen were identified and management recommendations were provided.

IMPLICATIONS FOR RESEARCH

Studies are needed comparing outcomes of nasal bubble CPAP use with other forms of CPAP in the ELBW infant, comparison of prongs to mask for nasal bubble CPAP, and comparing interventions to recommend optimal care bundles to prevent nasal septum injuries.

Effects of underwater bubble CPAP on very-low-birth-weight preterm newborns in the delivery room and after transport to the neonatal intensive care unit

The development of less invasive ventilatory strategies in very-low-birth-weight (VLBW) preterm newborns has been a growing concern in recent decades. This study aimed to measure differences in the clinical progression of preterm newborns using two distinct periods in a university hospital: before and after using underwater bubble continuous positive airway pressure (ubCPAP). This is a retrospective study of VLBW preterm newborns with gestational ages less than or equal to 32 weeks admitted to the neonatal intensive care unit. The time series was divided into two groups: a pre-CPAP group ( n = 45) and a post-CPAP group ( n = 40). The post-CPAP group had fewer resuscitations, required fewer surfactant doses, spent fewer days on mechanical ventilation, and demonstrated less of a need for fraction of inspired oxygen > 30%. UbCPAP is an easy to use, minimally invasive, and effective ventilatory strategy for VLBW preterm newborns that can be used in environments with limited resources. Thus, adopting this simple strategy as part of a service organization and health policy can positively impact outcomes.

Preventing Continuous Positive Airway Pressure Failure: Evidence-Based and Physiologically Sound Practices from Delivery Room to the Neonatal Intensive Care Unit

Routine use of continuous positive airway pressure (CPAP) to support preterm infants with respiratory distress is an evidenced-based strategy to decrease incidence of bronchopulmonary dysplasia. However, rates of CPAP failure remain unacceptably high in very premature neonates, who are at high risk for developing bronchopulmonary dysplasia. Using the GRADE framework to assess the quality of available evidence, this article reviews strategies aimed at decreasing CPAP failure, starting with delivery room interventions and followed through to system-based efforts in the neonatal intensive care unit. Despite best efforts, some very premature neonates fail CPAP. Also reviewed are predictors of CPAP failure in this vulnerable population.

Short term evaluation of respiratory effort by premature infants supported with bubble nasal continuous airway pressure using Seattle-PAP and a standard bubble device

Background

Almost one million prematurely born infants die annually from respiratory insufficiency, predominantly in countries with limited access to respiratory support for neonates. The primary hypothesis tested in the present study was that a modified device for bubble nasal continuous positive airway pressure (Bn-CPAP) would provide lower work of spontaneous breathing, estimated by esophageal pressure-rate products.

Methods

Infants born <32 weeks gestation and stable on Bn-CPAP with FiO₂ <0.30 were studied within 72 h following delivery. Esophageal pressures during spontaneous breathing were measured during 2 h on standard Bn-CPAP, then 2 h with Bn-CPAP using a modified bubble device presently termed Seattle-PAP, which produces a different pattern of pressure fluctuations and which provided greater respiratory support in preclinical studies, then 2 h on standard Bn-CPAP.

Results

All 40 infants enrolled completed the study and follow-up through 36 wks post menstrual age or hospital discharge, whichever came first. No infants were on supplemental oxygen at completion of follow-up. No infants developed pneumothoraces or nasal trauma, and no adverse events attributed to the study were observed. Pressure-rate products on the two devices were not different, but effort of breathing, assessed by areas under esophageal pressure-time curves, was lower with Seattle-PAP than with standard Bn-CPAP.

Conclusion

Use of Seattle-PAP to implement Bn-CPAP lowers the effort of breathing exerted even by relatively healthy spontaneously breathing premature neonates. Whether the lower effort of breathing observed with Seattle-PAP translates to improvements in neonatal mortality or morbidity will need to be determined by studies in appropriate patient populations.

Performance of the Silverman Andersen Respiratory Severity Score in predicting PCO2 and respiratory support in newborns: a prospective cohort study

OBJECTIVE

To determine if the Silverman Andersen respiratory severity score, which is assessed by physical exam, within 1 h of birth is associated with elevated carbon dioxide level and/or the need for increased respiratory support.

STUDY DESIGN

Prospective cohort study including 140 neonates scored within 1 h of birth. We report respiratory scores and their association with carbon dioxide and respiratory support within 24 h.

RESULTS

Carbon dioxide level correlated with respiratory score (n = 33, r = 0.35, p = 0.045). However, mean carbon dioxide for patients with score <5 vs. ≥5 did not differ significantly (56 vs. 67, p = 0.095). Patients with respiratory scores ≥5 had respiratory support increased within 24 h more often than those with scores <5 (79% vs. 28%, p < 0.001).

CONCLUSION

The Silverman Andersen respiratory severity score may be valuable for predicting need for escalation of respiratory support and facilitate decision making for transfer in low-resource settings.

Continuous Positive Airway Pressure: To Bubble or Not to Bubble?

Continuous positive airway pressure (CPAP) systems can be broadly grouped into continuous flow or variable flow devices. Bubble CPAP (bCPAP) is a continuous flow device and has physiologic properties that could facilitate gas exchange. Its efficacy has been reported to be similar to variable flow CPAP systems when used as a primary mode of respiratory support. Post-extubation bCPAP is reported to significantly reduce extubation failure rates among preterm infants ventilated for less than 2 week when compared to Infant flow driver CPAP (variable flow). bCPAP has been successfully used in resource-poor settings. The success on CPAP is however dependant on good nursing care and clear management protocols for weaning and escalation of care.

Physiologic Basis for Nasal Continuous Positive Airway Pressure, Heated and Humidified High-Flow Nasal Cannula, and Nasal Ventilation

Noninvasive support modalities have become ever more present in the care of newborns with a wide variety of disease processes. As clinicians have continued to avoid intubation and mechanical ventilation in preterm and term infants, the technologies available to support these groups have grown. Despite this rapid growth they can be broken down into 3 large categories of support, all attempting to deliver both flow and pressure to the nasopharynx supporting both phases of spontaneous breathing. The goal of all of the therapies is to stabilize a heterogeneous group of disorders with some common pathologies and avoid invasive support modalities.

A Randomized Trial Comparing Efficacy of Bubble and Ventilator Derived Nasal CPAP in Very Low Birth Weight Neonates with Respiratory Distress

INTRODUCTION

Continuous Positive Airway Pressure (CPAP) has an established role in the care of Very Low Birth Weight (VLBW) babies with respiratory distress. Bubble CPAP (BCPAP) is a cheap alternative for countries where resources are limited. However, data comparing efficacy of BCPAP with conventional ventilator derived (VCPAP) is limited.

AIM

To compare CPAP failure rates between BCPAP and VCPAP among VLBW, with moderate respiratory distress. Secondary objectives were to compare the rates of Intraventricular Haemorrhage (IVH), pulmonary air leaks and deaths between the two groups and determine the predictors of CPAP failure.

MATERIALS AND METHODS

VLBW babies with moderate respiratory distress (Silverman Anderson score 4-7), born or admitted in Neonatal Intensive Care Unit (NICU) within 28 days of life were randomized to receive either BCPAP (n=34) or VCPAP (n=34). CPAP failure rate in both the groups was compared.

RESULTS

The baseline characteristics were similar in both the groups. Five out of 34 (14.70%) babies in BCPAP group and 11 out of 34 (32.35%) in VCPAP failed CPAP (p=0.08). IVH (BCPAP group 24% and VCPAP group 9%, p= 0.10) and mortality (BCPAP group 6% and VCPAP group 9%, p=0.642) were comparable in both the groups. Factors such as gestational age <30 weeks, weight <1000 grams, Respiratory Distress Syndrome (RDS), shock, pulmonary haemorrhage, Disseminated Intravascular Coagulation (DIC) and multi-organ dysfunction were significantly associated with CPAP failure in our study.

CONCLUSION

The CPAP failure rates in VLBW babies with moderate respiratory distress were found to be similar whether bubble CPAP or ventilator CPAP was used. There was no difference in complication rates of IVH or mortality with either method of CPAP.

Continuous positive airway pressure: Physiology and comparison of devices

Nasal continuous positive airway pressure (CPAP) is increasingly used for respiratory support in preterm babies at birth and after extubation from mechanical ventilation. Various CPAP devices are available for use that can be broadly grouped into continuous flow and variable flow. There are potential physiologic differences between these CPAP systems and the choice of a CPAP device is too often guided by individual expertise and experience rather than by evidence. When interpreting the evidence clinicians should take into account the pressure generation sources, nasal interface, and the factors affecting the delivery of pressure, such as mouth position and respiratory drive. With increasing use of these devices, better monitoring techniques are required to assess the efficacy and early recognition of babies who are failing and in need of escalated support.

Use of Nasal Bubble CPAP in Children with Hypoxemic Clinical Pneumonia-Report from a Resource Limited Set-Up

OBJECTIVE

Nasal bubble continuous positive airway pressure (bCPAP) is preferred in developing economies for easy applicability and low cost. Because its use in older children is unexplored, we sought to evaluate its utility in hypoxemic clinical pneumonia.

METHODS

Of 330 children (1 month-12 years) with clinical pneumonia enrolled prospectively over 1 year, those with increased work of breathing and/or SpO2 <92% received bCPAP delivered via an underwater 'T' tube through nasal prongs. Proportion requiring intubation despite bCPAP constituted primary outcome. Incidence of complications, duration of bCPAP and emergency stay were secondary outcomes.

RESULTS

Oxygen was initiated by nasal prongs (NPO2) in 204 (61.8%), and by bCPAP in 110 (33.3%). Sixteen (4.8%) were intubated at the outset. Fifty-three (25.9%) on NPO2 were shifted to bCPAP for worsening distress and hypoxemia. Only three (1.8%) from bCPAP group required intubation, of which one died. Failure rate and complications were negligent. The median emergency stay was 4 days.

CONCLUSIONS

Nasal bCPAP was safe and effective in children with hypoxemic clinical pneumonia.

Early Bubble Continuous Positive Airway Pressure: Investigating Interprofessional Best Practices for the NICU Team

Premature neonates delivered <32 completed weeks gestation are unprepared to handle the physiologic demands of extrauterine life. Within the respiratory system, alveolar instability and collapse can cause decreased functional residual capacity, impaired oxygenation, and hypoxemia leading to respiratory distress syndrome. Supportive measures are indicated immediately after birth to establish physiologic stability including bubble continuous positive airway pressure (CPAP) or endotracheal intubation and mechanical ventilation. CPAP is a noninvasive, gentle mode of ventilation that can mitigate the effects of lung immaturity, but prolonged use can increase the risk for nasal breakdown. Strategies to mitigate this risk must be infused as best practices in the NICU environment. The purpose of this article is to propose an evidence-based best practice care bundle for the early initiation of CPAP in the delivery room and associated skin barrier protection strategies for premature neonates <32 weeks gestation and weighing <1,500 g.

A randomised controlled trial of flow driver and bubble continuous positive airway pressure in preterm infants in a resource-limited setting

OBJECTIVES

The variable-flow flow driver (FD; EME) and continuous-flow bubble (Fisher-Paykel) continuous positive airway pressure (CPAP) systems are widely used. As these differ in cost and technical requirements, determining comparative efficacy is important particularly where resources are limited.

DESIGN

We performed a randomised, controlled, equivalence trial of CPAP systems. We specified the margin of equivalence as 2 days. We analysed binary variables by logistical regression adjusted for gestation, and log transformed continuous variables by multiple linear regression adjusted for gestation, sex and antenatal steroids.

SETTING

A neonatal unit with no blood gas analyser or surfactant availability and limited X-ray and laboratory facilities

PATIENTS

Neonates <37 weeks of gestation.

INTERVENTIONS

We provided CPAP at delivery followed by randomisation to FD or bubble (B).

OUTCOMES

Primary outcome included total days receiving CPAP; secondary outcomes included days receiving CPAP, supplemental oxygen, ventilation, death, pneumothorax and nasal excoriation.

RESULTS

We randomised 125 infants (B 66, FD 59). Differences in infant outcomes on B and FD were not statistically significant. The median (range) for CPAP days for survivors was B 0.8 (0.04 to 17.5), FD 0.5 (0.04 to 5.3). B:FD (95% CI) ratios were CPAP days 1.3 (0.9 to 2.1), CPAP plus supplementary oxygen days 1.2 (0.7 to 1.9). B:FD (95% CI) ORs were death 2.3 (0.2 to 28), ventilation 2.1 (0.5 to 9), nasal excoriation 1.2 (0.2 to 8) and pneumothorax 2.4 (0.2 to 26).

CONCLUSIONS

In a resource-limited setting we found B CPAP equivalent to FD CPAP in the total number of days receiving CPAP within a margin of 2 days.

TRIAL REGISTRATION NUMBER

ISRCTN22578364.

Impact of the systematic introduction of low-cost bubble nasal CPAP in a NICU of a developing country: a prospective pre- and post-intervention study

Background

The use of Nasal Continuous Positive Airway Pressure Ventilation (NCPAP) has begun to increase and is progressively replacing conventional mechanical ventilation (MV), becoming the cornerstone treatment for newborn respiratory distress syndrome (RDS). Howerver, NCPAP use in Lower-Middle Income Countries (LMICs) is poor. Moreover, bubble NCPAP (bNCPAP), for efficacy, cost effectiveness, and ease of use, should be the primary assistance technique employed in newborns with RDS.

Objective: To measure the impact on in-hospital newborn mortality of using a bNCPAP device as the first intervention on newborns requiring ventilatory assistance.

Methods

Design: Prospective pre-intervention and post-intervention study.

Setting: The largest Neonatal Intensive Care Unit (NICU) in Nicaragua.

Participants: In all, 230 (2006) and 383 (2008) patients were included.

Intervention: In May 2006, a strategy was introduced to promote the systematic use of bNCPAP to avoid intubation and MV in newborns requiring ventilatory assistance. Data regarding gestation, delivery, postnatal course, mortality, length of hospitalisation, and duration of ventilatory assistance were collected for infants assisted between May and December 2006, before the project began, and between May and December 2008, two years afterwards.

Outcome measures: The pre- vs post-intervention proportion of newborns who died in-hospital was the primary end point. Secondary endpoints included rate of intubation and duration of NICU stay.

Results

Significant differences were found in the rate of intubation (72 vs 39%; p < 0.0001) and the proportion of patients treated exclusively with bNCPAP (27% vs 61%; p <0.0001). Mortality rate was significantly reduced (40 vs 23%; p < 0.0001); however, an increase in the mean duration of NICU stay was observed (14.6 days in 2006 and 17.5 days in 2008, p = 0.0481).

The findings contribute to the evidence that NCPAP, particularly bNCPAP, is the first-line standard of care for efficacy, cost effectiveness, and ease of use in newborns with respiratory distress in LMICs.

Conclusions

This is the first extensive survey performed in a large NICU from a LMICs, proving the efficacy of the systematic use of a bNCPAP device in reducing newborn mortality. These findings are an incentive for considering bNCPAP as an elective strategy to treat newborns with respiratory insufficiency in LMICs.

Efficacy and safety of bubble CPAP in neonatal care in low and middle income countries: a systematic review

INTRODUCTION

Forty per cent of global child deaths occur in the neonatal period. Low and middle income countries need effective and simple methods to improve hospital-based neonatal care. Bubble continuous positive airway pressure (CPAP) may have a role in improving the quality of respiratory support in hospitals in low and middle income countries.

AIM

To examine the evidence for the efficacy and safety of bubble CPAP in neonates with respiratory distress in low and middle income settings.

METHOD

A systematic search (1946-March 2014) was performed of Pubmed, Ovid MEDLINE, Web of Science, Google Scholar and the references of relevant articles. Articles meeting inclusion criteria (CPAP for respiratory distress in infants <28 days of age in hospitals in low and middle income countries) were assessed using Grading of Recommendations, Assessment, Development and Evaluation and Newcastle-Ottawa Quality Assessment Scale methodology. Outcomes included need for mechanical ventilation, complications and mortality.

RESULTS

In three studies, the initial use of bubble CPAP compared with oxygen therapy, followed by mechanical ventilation if required, reduced the need for mechanical ventilation by 30%-50%. In another three trials comparing bubble CPAP with ventilator CPAP, mortality and complication rates were similar, while meta-analysis of CPAP failure in these same trials showed a lower failure rate in the bubble CPAP groups (p <0.003).

CONCLUSIONS

There is evidence that bubble CPAP is safe and reduces the need for mechanical ventilation. Further research into the efficacy of bubble CPAP in low-income and middle-income countries is needed.

CPAP: a guide for clinicians in developing countries

Despite the provision of oxygen, antibiotics and treatment guidelines, the case fatality rate for hypoxaemic pneumonia is still high in many hospitals in developing countries. Methods of delivering continuous positive airway pressure (CPAP) are now available which are simple to use, safe and relatively inexpensive. This paper describes two methods which may be appropriate where resources are limited: (i) bubble-CPAP using oxygen concentrators with an air-oxygen mix function and low resistance nasal oxygen prongs, and (ii) high-flow nasal cannula oxygen therapy. More research is needed on the implementation, cost and effectiveness of CPAP in the management of pneumonia and in neonatal care in developing countries.

Improving delivery room management for very preterm infants

BACKGROUND AND OBJECTIVES

Events in the delivery room significantly impact the outcomes of preterm infants. We developed evidence-based guidelines to prevent heat loss, reduce exposure to supplemental oxygen, and increase use of noninvasive respiratory support to improve the care and outcomes of infants with birth weight ≤1250 g at our institution.

METHODS

The guidelines were implemented through multidisciplinary conferences, routine use of a checklist, appointment of a dedicated resuscitation nurse, and frequent feedback to clinicians. This cohort study compares a historical group (n = 80) to a prospective group (n = 80, after guidelines were implemented). Primary outcome was axillary temperature at admission to the intensive care nursery. Secondary outcomes measured adherence to the guidelines and changes in clinically relevant patient outcomes.

RESULTS

Baseline characteristics of the groups were similar. After introduction of the guidelines, average admission temperatures increased (36.4°C vs 36.7°C, P < .001) and the proportion of infants admitted with moderate/severe hypothermia fell (14% vs 1%, P = .003). Infants were exposed to less oxygen during the first 10 minutes (P < .001), with similar oxygen saturations. Although more patients were tried on continuous positive airway pressure (40% vs 61%, P = .007), the intubation rate was not significantly different (64% vs 54%, P = .20). Median durations of invasive ventilation and hospitalization decreased after the quality initiative (5 vs 1 days [P = .008] and 80 vs 60 days [P = .02], respectively).

CONCLUSIONS

We have demonstrated significantly improved quality of delivery room care for very preterm infants after introduction of evidence-based delivery room guidelines. Multidisciplinary involvement and continuous education and reinforcement of the guidelines permitted sustained change.