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The Cochrane Database of Systematic... Apr 2010Acute viral bronchiolitis is associated with airway obstruction and turbulent gas flow. Heliox, a mixture of oxygen and the inert gas helium, may improve gas flow... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Acute viral bronchiolitis is associated with airway obstruction and turbulent gas flow. Heliox, a mixture of oxygen and the inert gas helium, may improve gas flow through high-resistance airways and decrease the work of breathing.
OBJECTIVES
To assess heliox in addition to standard medical care for acute bronchiolitis in infants.
SEARCH STRATEGY
We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2009, issue 2), which includes the Cochrane Acute Respiratory Infections (ARI) Group's Specialised Register, MEDLINE (1966 to June 2009), EMBASE (June 2009), LILACS (May 2009) and the NIH web site (May 2009).
SELECTION CRITERIA
Randomised controlled trials (RCTs) and quasi-RCTs of heliox in infants with acute bronchiolitis.
DATA COLLECTION AND ANALYSIS
Two review authors independently extracted data and assessed trial quality. We pooled data from individual trials.
MAIN RESULTS
We included four trials involving 84 infants under two years of age with respiratory distress secondary to bronchiolitis caused by respiratory syncytial virus (RSV) and requiring paediatric intensive care unit (PICU) hospitalisation. We found that infants treated with heliox inhalation had a significantly lower mean clinical respiratory score in the first hour after starting treatment when compared to those treated with air or oxygen inhalation (mean difference (MD) -1.15, 95% confidence interval (CI) -1.98 to -0.33, P = 0.006, n = 69). There was no clinically significant reduction in the rate of intubation (risk ratio (RR) 1.38, 95% CI 0.41 to 4.56, P = 0.60, n = 58), in the need for mechanical ventilation (RR 1.11, 95% CI 0.36 to 3.38, P = 0.86, n = 58), or in the length of stay in a PICU (MD = -0.15 days, 95% CI -0.92 to 0.61, P = 0.69, n = 58). No adverse events related to heliox inhalation were reported.
AUTHORS' CONCLUSIONS
Current evidence suggests that the addition of heliox therapy may significantly reduce a clinical score evaluating respiratory distress in the first hour after starting treatment in infants with acute RSV bronchiolitis. Nevertheless, there was no reduction in the rate of intubation, in the need for mechanical ventilation, or in the length of PICU stay. Further studies with homogeneous logistics in their heliox application are needed. Such studies would provide necessary information as to the appropriate place for heliox in the therapeutic schedule for severe bronchiolitis.
Topics: Acute Disease; Administration, Inhalation; Bronchiolitis, Viral; Bronchodilator Agents; Helium; Humans; Infant; Intensive Care Units, Pediatric; Intubation, Intratracheal; Length of Stay; Oxygen; Randomized Controlled Trials as Topic; Respiratory Syncytial Virus Infections
PubMed: 20393951
DOI: 10.1002/14651858.CD006915.pub2 -
Sleep Science (Sao Paulo, Brazil) 2022Continuous positive airway pressure (CPAP) is the standard treatment for obstructive sleep apnea (OSA), but its outcomes for the pregnant are still undefined. This study... (Review)
Review
Continuous positive airway pressure (CPAP) is the standard treatment for obstructive sleep apnea (OSA), but its outcomes for the pregnant are still undefined. This study aims to review current CPAP intervention during pregnancy, discuss published trials, and propose relevant issues that have yet to be addressed satisfactorily about the cardiovascular, metabolic, fetal, and neonatal effects of CPAP treatment during gestation. Two authors independently conducted a systematic review until March 28th, 2021 on PubMed, BVS, and Cochrane Library, using PRISMA guidelines, and risk of bias. Discrepancies were reconciled by a third reviewer. Of 59 identified citations, eight original trials have submitted a total of 90 pregnant women to polysomnography and CPAP therapy. Four studies performed in samples with hypertension or preeclampsia presented blood pressure decrease or maintained the antihypertensive drug dose in the CPAP group. After CPAP utilization, one trial registered cardiac output and stroke volume increase with heart rate and peripheral vascular resistance decrease, which were correlated with birth weight increment. Others documented a higher Apgar in the CPAP group and more fetal movements during CPAP use. There was a reduction in serum uric acid and tumor necrosis factor-alpha in the CPAP groups whose blood pressure decreased. However, two weeks of CPAP use in women with gestational diabetes and OSA did not improve glucose levels but raised the insulin secretion in those adherents to CPAP. Despite these positive results without adverse effects, randomized controlled trials with standardized follow-up in larger populations are required to determine CPAP therapy recommendations in pregnancy.
PubMed: 35273777
DOI: 10.5935/1984-0063.20210024 -
NPJ Primary Care Respiratory Medicine Oct 2022Given the increasing use of e-cigarettes and uncertainty surrounding their safety, we conducted a systematic review to determine the effects of e-cigarettes on measures...
Given the increasing use of e-cigarettes and uncertainty surrounding their safety, we conducted a systematic review to determine the effects of e-cigarettes on measures of lung function. We systematically searched EMBASE, MEDLINE, and PsycINFO databases via Ovid, the Cochrane CENTRAL database, and the Web of Science Core from 2004 until July 2021, identifying 8856 potentially eligible studies. A total of eight studies (seven studying immediate effects and one long-term effects, 273 total participants) were included. The risk of bias was assessed using the Risk of Bias in Non-randomized Studies-of Interventions (ROBINS-I) and Cochrane risk of bias tools. These studies suggest that vaping increases airway resistance but does not appear to impact forced expiratory volume in one second (FEV, forced vital capacity (FVC), or FEV/FVC ratio. However, given the limited size and follow-up duration of these studies, larger, long-term studies are required to further determine the effects of e-cigarettes on lung function.
Topics: Humans; Vaping; Electronic Nicotine Delivery Systems; Forced Expiratory Volume; Vital Capacity; Lung
PubMed: 36273009
DOI: 10.1038/s41533-022-00311-w -
Journal of Clinical Medicine Sep 2023Obstructive sleep apnea (OSA) during pregnancy can negatively affect both the mother and the baby. Our main goal is to show whether there is an association between OSA... (Review)
Review
Obstructive sleep apnea (OSA) during pregnancy can negatively affect both the mother and the baby. Our main goal is to show whether there is an association between OSA during pregnancy and delivering small for gestational age (SGA) infants. This systematic review was conducted according to the PRISMA 2020 statement using three databases: MEDLINE via PubMed, Scopus, and Cochrane Library. All databases were last accessed on 1 June 2023. The implemented systematic literature search identified 744 articles. After excluding reviews, meta-analyses, book chapters, case reports, and letters, 47 studies were analyzed, 18 of which finally met the inclusion criteria. The included studies mainly indicate that OSA during pregnancy may not significantly impact SGA, but some of them have shown the existence of this relation. Nevertheless, it is recommended that all pregnant women should be screened for symptoms of OSA and that sleep tests should be performed on those who show signs of it. Detecting and treating OSA early in pregnancy can help reduce the condition's negative effects. However, more extensive studies are still needed to gather clear evidence on the impact of an OSA diagnosis on mothers and babies.
PubMed: 37762913
DOI: 10.3390/jcm12185972 -
Schmerz (Berlin, Germany) Sep 2012Noisy breathing during the terminal stages of life (death rattle) is one of the most common and most difficult symptoms to treat. In palliative medicine there are still... (Review)
Review
Noisy breathing during the terminal stages of life (death rattle) is one of the most common and most difficult symptoms to treat. In palliative medicine there are still no accepted guidelines for the treatment of death rattle in the final phase of life. In the first part of this article a description of death rattle is presented and in the second part a systematic literature review gives an insight into the effectiveness of interventions for death rattle. Two databases (Embase and Medline) were searched up to 2010 which identified 134 studies but only 6 met the inclusion criteria (2 cohort and 4 experimental studies) in which scopolamine, glycopyrrolate, butyl scopolamine, atropine and octreotide were tested. There is a lack of conclusive studies which investigated the effectiveness of treatment of death rattle. Furthermore, the identified studies revealed methodical problems. In general non-drug therapy is recommended as first choice. If anticholinergics are considered the selection also depends on whether simultaneous sedation is desired or not. The English full text version of this article will be available in SpringerLink as of November 2012 (under "Supplemental").
Topics: Airway Resistance; Atropine; Butylscopolammonium Bromide; Combined Modality Therapy; Glycopyrrolate; Humans; Mucus; Octreotide; Patient Positioning; Respiratory Sounds; Saliva; Scopolamine; Suction; Terminal Care; Treatment Outcome
PubMed: 22956075
DOI: 10.1007/s00482-012-1215-8 -
Journal of Allergy 2014Background. Thermal water inhalations and irrigations have a long tradition in the treatment of airway diseases. Currently there exists no systematic review or... (Review)
Review
Background. Thermal water inhalations and irrigations have a long tradition in the treatment of airway diseases. Currently there exists no systematic review or meta-analysis on the effectiveness of thermal water treatment in upper respiratory tract diseases. Methods. A systematic search in the databases of MEDLINE, EMBASE, CENTRAL, ISI Web of Science, and MedPilot was accomplished. Results. Eight evaluable outcome parameters from 13 prospective clinical studies were identified for 840 patients. Mucociliary clearance time improves significantly (P < 0.01) for the pooled thermal water subgroup and the sulphurous subgroup after 2 weeks (-6.69/minutes) and after 90 days (-8.33/minutes), not for isotonic sodium chloride solution (ISCS). Nasal resistance improved significantly after 2 weeks (Radon, ISCS, and placebo), after 30 days (sulphur and ISCS), and after 90 days (sulphur). Nasal flow improved significantly with the pooled thermal water, radon alone, and ISCS subgroups. For the IgE parameter only sulphurous thermal water (P < 0.01) and ISCS (P > 0.01) were analyzable. Adverse events of minor character were only reported for sulphurous treatment (19/370). Conclusion. Thermal water applications with radon or sulphur can be recommended as additional nonpharmacological treatment in upper airway diseases. Also in comparison to isotonic saline solution it shows significant improvements and should be investigated further.
PubMed: 24987423
DOI: 10.1155/2014/943824 -
Sleep Medicine Reviews Dec 2017This review aimed to determine the effectiveness of positional modification techniques in preventing supine sleep, sleep-disordered breathing and other clinically... (Meta-Analysis)
Meta-Analysis Review
This review aimed to determine the effectiveness of positional modification techniques in preventing supine sleep, sleep-disordered breathing and other clinically important outcomes in patients with supine obstructive sleep apnea (OSA). Randomized controlled trials comparing positional modification techniques with any other therapy or placebo were included. Electronic searches of databases including CENTRAL, MEDLINE, CINAHL, Embase, and Web of Science up to April 2016 were performed. Meta-analysis was undertaken where possible. This comprehensive meta-analysis found benefit for positional modification techniques in those with supine OSA in terms of reduction in apnea-hypopnea index (AHI) and time spent supine. Whilst positional modification techniques were effective in terms of a reduction in AHI, continuous positive airway pressure (CPAP) was more effective than these techniques. A reliable diagnosis of supine OSA should be considered, and further research is required on patient-centred outcomes including comfort, barriers to adherence, cost-analysis, and long term outcomes including the effect on cardiovascular disease, the metabolic syndrome, and insulin resistance.
Topics: Continuous Positive Airway Pressure; Humans; Posture; Randomized Controlled Trials as Topic; Sleep Apnea, Obstructive; Supine Position
PubMed: 28012784
DOI: 10.1016/j.smrv.2016.11.004 -
JAMA Facial Plastic Surgery Sep 2016The internal nasal valve is the narrowest part of the nasal airway and a common site of inspiratory collapse and obstruction of nasal airflow. Over-the-counter... (Comparative Study)
Comparative Study Review
IMPORTANCE
The internal nasal valve is the narrowest part of the nasal airway and a common site of inspiratory collapse and obstruction of nasal airflow. Over-the-counter mechanical nasal dilators are an alternative to surgical intervention that attempts to improve airflow through the internal nasal valve.
OBJECTIVE
To determine the efficacy of over-the-counter mechanical nasal dilators and classify these products by mechanism.
EVIDENCE REVIEW
A database of 33 available over-the-counter mechanical nasal dilators was generated via a PubMed search as well as an internet search via Amazon.com and Google, conducted from April 1, 2013, through December 31, 2015. Products determined to be unavailable or discontinued were excluded from the database. Of the devices examined in published literature, efficacy was based on objective measures, such as measured airflow, the cross-sectional area of the nasal valve, and changes in resistance. Measures of reported sleep quality or patient perception were excluded.
FINDINGS
An analysis of each product's mechanism revealed 4 broad classes: external nasal dilator strips, nasal stents, nasal clips, and septal stimulators. A review demonstrated 5 studies supporting the use of external nasal dilator strips, 4 studies supporting the use of nasal clips, 1 study supporting the use of nasal stents, and no studies supporting the use of septal stimulators.
CONCLUSIONS AND RELEVANCE
Our findings suggest that external nasal dilator strips and nasal clips effectively relieve obstruction of the internal nasal valve and may be an alternative to surgical intervention in some patients.
Topics: Airway Resistance; Dilatation; Humans; Nasal Obstruction
PubMed: 27367589
DOI: 10.1001/jamafacial.2016.0291 -
The Cochrane Database of Systematic... Dec 2013Croup is thought to be triggered by a viral infection and is characterised by respiratory distress due to upper airway inflammation and swelling of the subglottic mucosa... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Croup is thought to be triggered by a viral infection and is characterised by respiratory distress due to upper airway inflammation and swelling of the subglottic mucosa in children. Mostly it is mild and transient and resolves with supportive care. In moderate to severe cases, treatment with corticosteroids and nebulised epinephrine (adrenaline) is required. Corticosteroids improve symptoms but it takes time for a full effect to be achieved. In the interim, the child is at risk of further deterioration. This may rarely result in respiratory failure necessitating emergency intubation and ventilation. Nebulised epinephrine may result in dose-related adverse effects including tachycardia, arrhythmias and hypertension and its benefit may be short-lived. Helium-oxygen (heliox) inhalation has shown therapeutic benefit in initial treatment of acute respiratory syncytial virus (RSV) bronchiolitis and may prevent morbidity and mortality in ventilated neonates. Heliox has been used during emergency transport of children with severe croup and anecdotal evidence suggests that heliox relieves respiratory distress.
OBJECTIVES
To examine the effect of heliox on relieving symptoms and signs of croup, as determined by a croup score (a tool for measuring the severity of croup).To examine the effect of croup on rates of admission or intubation (or both), through comparisons of heliox with placebo or any active intervention(s) in children with croup.
SEARCH METHODS
We searched CENTRAL 2013, Issue 10, MEDLINE (1950 to October week 5, 2013), EMBASE (1974 to November 2013), CINAHL (1982 to November 2013), Web of Science (1955 to November 2013) and LILACS (1982 to November 2013). In addition, we searched two clinical trials registries: the World Health Organization International Clinical Trials Registry Platform (WHO ICTRP) and clinicaltrials.gov (searched 12 November 2013).
SELECTION CRITERIA
Randomised controlled trials (RCTs) and quasi-RCTs comparing the effect of helium-oxygen mixtures with placebo or any active intervention(s) in children with croup.
DATA COLLECTION AND ANALYSIS
Two review authors independently identified and assessed citations for inclusion. A third review author resolved disagreements. We assessed included trials for allocation concealment, blinding of intervention, completeness of outcome data, selective outcome reporting and other potential sources of bias. We reported mean differences for continuous data and odds ratios for dichotomous data. We descriptively reported data not suitable for statistical analysis.
MAIN RESULTS
We included three RCTs with a total of 91 participants. One study compared heliox 70%/30% with 30% humidified oxygen administered for 20 minutes in children with mild croup and found no statistically significant differences in the overall change in croup scores between heliox and the comparator. In another study, children with moderate to severe croup were administered intramuscular dexamethasone 0.6 mg/kg and either heliox 70%/30% with one to two doses of nebulised saline, or 100% oxygen with one to two doses of nebulised racaemic epinephrine for three hours. In this study, the heliox group's croup scores improved significantly more at all time points from 90 minutes onwards. However, overall there were no significant differences in croup scores between the groups after four hours using repeated measures analysis. In a third study, children with moderate croup all received one dose of oral dexamethasone 0.3 mg/kg with heliox 70%/30% for 60 minutes in the intervention group and no treatment in the comparator. There was a statistically significant difference in croup scores at 60 minutes in favour of heliox but no significant difference after 120 minutes. It was not possible to pool outcomes because the included studies compared different interventions and reported different outcomes. No adverse events were reported.
AUTHORS' CONCLUSIONS
There is some evidence to suggest a short-term benefit of heliox inhalation in children with moderate to severe croup who have been administered oral or intramuscular dexamethasone. In one study, the benefit appeared to be similar to a combination of 100% oxygen with nebulised epinephrine. In another study there was a slight change in croup scores between heliox and controls, with unclear clinical significance. In another study in mild croup, the benefit of humidified heliox was equivalent to that of 30% humidified oxygen, suggesting that heliox is not indicated in this group of patients provided that 30% oxygen is available. Adequately powered RCTs comparing heliox with standard treatments are needed to further assess the role of heliox in children with moderate to severe croup.
Topics: Adrenal Cortex Hormones; Airway Obstruction; Airway Resistance; Bronchodilator Agents; Child, Preschool; Croup; Dexamethasone; Epinephrine; Helium; Humans; Infant; Oxygen; Oxygen Inhalation Therapy; Randomized Controlled Trials as Topic
PubMed: 24318607
DOI: 10.1002/14651858.CD006822.pub4 -
Intravenous or enteral loop diuretics for preterm infants with (or developing) chronic lung disease.The Cochrane Database of Systematic... 2002Lung disease in preterm infants is often complicated with lung edema. (Review)
Review
BACKGROUND
Lung disease in preterm infants is often complicated with lung edema.
OBJECTIVES
The aim of this review was to assess the risks and benefits of administration of a diuretic acting on the loop of Henle (loop diuretic) in preterm infants with or developing chronic lung disease (CLD). Primary objectives were to assess changes in need for oxygen or ventilatory support and effects on long-term outcome, and secondary objectives were to assess changes in pulmonary mechanics and potential complications of therapy.
SEARCH STRATEGY
We used the standard search method of the Cochrane Neonatal Review Group. We searched MEDLINE (1966-October 2001), EMBASE (1974-November 2001) and the Cochrane Controlled Trials Register (CCTR) (Cochrane Library, Issue 4, 2001). In addition, we hand searched several abstract books of national and international American and European Societies.
SELECTION CRITERIA
We included in this analysis trials in which preterm infants with or developing chronic lung disease and at least 5 days of age were all randomly allocated to receive a loop diuretic either enterally or intravenously. Eligible studies needed to assess at least one of the outcome variables defined a priori for this systematic review. Primary outcome variables included important clinical outcomes, and secondary outcome variables included toxicity and pulmonary mechanics (e.g., lung compliance and airway resistance).
DATA COLLECTION AND ANALYSIS
We used the standard method for the Cochrane Collaboration which is described in the Cochrane Collaboration Handbook. Two investigators extracted, assessed and coded separately all data for each study, using a form that was designed specifically for this review. Any disagreement was resolved by discussion. We combined parallel and cross-over trials and, whenever possible, transformed baseline and final outcome data measured on a continuous scale into change scores using Follmann's formula.
MAIN RESULTS
The only loop diuretic used in the studies which met the selection criteria was furosemide. Most studies focused on pathophysiological parameters and did not assess effects on important clinical outcomes defined in this review, or the potential complications of diuretic therapy. In preterm infants < 3 weeks of age developing CLD, furosemide administration has either inconsistent effects or no detectable effect. In infants > 3 weeks of age with CLD, a single intravenous dose of 1 mg/kg of furosemide improves lung compliance and airway resistance for 1 hour. Chronic administration of furosemide improves both oxygenation and lung compliance.
REVIEWER'S CONCLUSIONS
In preterm infants > 3 weeks of age with CLD, acute and chronic administration of furosemide improve lung compliance. Chronic administration of intravenous or enteral furosemide improves oxygenation. In view of the lack of data from randomized trials concerning effects on important clinical outcomes, routine or sustained use of systemic loop diuretics in infants with (or developing) CLD cannot be recommended based on current evidence. Randomized trials are needed to assess the effects of furosemide administration on survival, duration of ventilatory support and oxygen administration, length of hospital stay, potential complications and long-term outcome.
Topics: Chronic Disease; Diuretics; Furosemide; Humans; Infant, Newborn; Infant, Premature; Infant, Premature, Diseases; Loop of Henle; Lung Diseases; Randomized Controlled Trials as Topic
PubMed: 11869600
DOI: 10.1002/14651858.CD001453