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Pediatric Asthma ManagementThe authors respond:

Andrew Miller, Timothy R Myers and Liza M Tomasio
Respiratory Care February 2012, 57 (2) 332-333; DOI: https://doi.org/10.4187/respcare.01662
Andrew Miller
Emergency Department Duke University Medical Center Durham, North Carolina
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Timothy R Myers
Pediatric Respiratory and Diagnostic Services and Pediatric Heart Center Rainbow Babies and Children's Hospital Case Western Reserve University Cleveland, Ohio
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Liza M Tomasio
Pediatric Respiratory and Diagnostic Services and Pediatric Heart Center Rainbow Babies and Children's Hospital Case Western Reserve University Cleveland, Ohio
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In the September 2011 issue of Respiratory Care, Myers and Tomasio provide an excellent review of current asthma management and pathophysiology in their article titled “Asthma: 2015 and Beyond.”1 In the section regarding emergency department (ED) treatment the authors assert that it's widely accepted that a treatment given via small-volume nebulizer (SVN) is preferred over metered-dose inhaler (MDI) with spacer. Pediatric patients and parents overwhelmingly prefer MDI with spacer to SVN (84% for parents and 82% for patients).2 The authors cite no references to support their claim, and MDIs have been proven to be as effective as SVN in pediatric patients. They state children can't perform an effective MDI technique, but treatments given with a spacer, valved holding chamber with mask are effective for medication delivery.3 Given that the therapeutic benefit of an aerosol given by blow-by4 or loose fitting mask5 is greatly reduced or negligible, the administration method chosen should be the one the child tolerates best.6,7 Giving treatments via MDI with spacer reinforces to the parents and patients that MDI with spacer and mask works as well as treatment via SVN.

The authors describe conflicting conclusions from a meta-analysis and Cochrane Review about the benefit of continuous albuterol therapy. Continuous albuterol has been shown to be a safe and effective treatment of asthma exacerbations and may be of benefit for patients with the most severe air-flow obstruction.8 Heliox is an effective adjunct in severe asthma and can be initiated in the ED to reduce work of breathing, increase bronchodilator deposition, and reduce air-trapping. Heliox is not indicated for routine use in asthmatic patients but may be of benefit for severe exacerbations in the ED.9,10 Intravenous magnesium is also an effective treatment option that can be initiated in the ED.11 Inhaled magnesium sulfate is a potential novel treatment for severe asthma.12 Positive-pressure ventilation can also be used to effectively treat pediatric patients in the ED and those admitted to a pediatric intensive care unit.13,14 Respiratory therapists are crucial in the early detection and initiation of adjunctive therapy in preventing respiratory failure.

The ED can be considered a golden opportunity for asthma education. Most asthma patients who present to the ED are discharged home. An asthma attack severe enough to present to the ED means the patient has poorly controlled asthma or requires proper teaching on proper medication use and should be started on controller medication. Unfortunately, many patients have poor follow-up, due to various socioeconomic factors and ED physicians' reticence in acting as primary care in prescribing pediatric patients with controller medications.15,16 Proper education of patients is essential to prevent their return to the ED and to prevent a potential life-threatening attack. Assuring patients have access to their medications, use proper techniques when using their MDIs, understand when to give each medication, and when to return to the ED are essential to their treatment. We should look at visits to the ED as an opportunity to educate patients by not only treating their current exacerbation but also optimizing their overall medication regimen. Respiratory therapists have a large impact in the proper education of asthma management and encouraging physicians to place patients on the proper controller medications.

  • © 2012 by Daedalus Enterprises Inc.

References

  1. 1.↵
    1. Myers T,
    2. Tomasio L
    . Asthma: 2015 and beyond. Respir Care 2011;56(9):1389–1410.
    OpenUrlPubMed
  2. 2.↵
    1. Cotterell EM,
    2. Gazarian M,
    3. Henry RL,
    4. O'Meara MW,
    5. Wales SR
    . Child andparent satisfaction with the use of spacer devices in acute asthma. J Paediatr Child Health 2002;38(6):604–607.
    OpenUrlCrossRefPubMed
  3. 3.↵
    1. Amirav I,
    2. Newhouse M
    . Metered-dose inhaler accessory devices in acute asthma. Arch Pediatr Adolesc Med 1997;151(9):876–882.
    OpenUrlCrossRefPubMed
  4. 4.↵
    1. Rubin BK
    . Bye-bye, blow-by (editorial). Respir Care 2007;52(8):981.
    OpenUrlFREE Full Text
  5. 5.↵
    1. Janssens HM,
    2. Tiddens HA
    . Facemasks and aerosol delivery by metered dose inhaler-valved holding chamber in young children: a tight seal makes the difference. J Aerosol Med 20(Suppl 1):S59–S65, 2007.
    OpenUrlPubMed
  6. 6.↵
    1. Iles R,
    2. Lister P,
    3. Edmunds AT
    . Crying significantly Reduces absorption of aerosolized drug in infants. Arch Dis Child 1999;81(2):163–165.
    OpenUrlAbstract/FREE Full Text
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    1. Tal A,
    2. Golan H,
    3. Grauer N,
    4. Aviram M,
    5. Albin D,
    6. Quastel M,
    7. et al
    . 1996. Deposition pattern of radiolabeled salbutamol inhaled from a metered dose inhaler by means of a spacer with mask in young children with airway obstruction. J Pediatr 1996;128(4):479–484.
    OpenUrlCrossRefPubMed
  8. 8.↵
    1. Peters S
    . Continuous bronchodilator therapy. Chest 2007;131(1):286–289.
    OpenUrlCrossRefPubMed
  9. 9.↵
    1. Reuben AD,
    2. Harris AR
    . 2004. Heliox for asthma in the emergency department: a review of the literature. Emerg Med J 2004;21(2):131–135.
    OpenUrlAbstract/FREE Full Text
  10. 10.↵
    1. Myers T
    . Use of heliox in children. Respir Care 2006;20(6):619–631.
    OpenUrl
  11. 11.↵
    1. Beasley R,
    2. Aldington S
    . Magnesium in the treatment of asthma. Curr Opin Allergy Clin Immunol 2007;7(1):107–110.
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  12. 12.↵
    1. Blitz M,
    2. Blitz S,
    3. Beasely R,
    4. Diner B,
    5. Hughes R,
    6. Knopp JA,
    7. Rowe BH
    . Inhaled magnesium sulfate in the treatment of acute asthma. Cochrane Database of Syst Rev 2007;19(4):1–20.
    OpenUrl
  13. 13.↵
    1. Mayordomo-Colunga J,
    2. Medina A,
    3. Rey C,
    4. Concha A,
    5. Menéndez S,
    6. Arcos ML,
    7. Vivanco-Allende A
    . Non-invasive ventilation in pediatric status asthmaticus: a prospective observational study. Pediatr Pulmonol 2011;46(10):949–957.
    OpenUrlPubMed
  14. 14.↵
    1. Williams AM,
    2. Abramo TJ,
    3. Shah MV,
    4. Miller RA,
    5. Burney-Jones C,
    6. Rooks S,
    7. Estrada C,
    8. et al
    . Safety and clinical findings of BiPAP utilization in children 20 kg or less for asthma exacerbations. Intensive Care Med 2011;37(8):1338–43.
    OpenUrlPubMed
  15. 15.↵
    1. Andrews A,
    2. Teufel RJ 2nd.,
    3. Basco Jr..,
    4. WT Jr.
    . Low Rates of Controller Medication Initiation and Outpatient Follow-Up after Emergency Department Visits for Asthma. J Pediatr 2011; [epub ahead of print]:1–6.
  16. 16.↵
    1. Lintzenich Andrews A,
    2. Teufel RJ 2nd.,
    3. Basco WT Jr.
    . Low Rates of Controller Medication Initiation and Outpatient Follow-Up after Emergency Department Visits for Asthma. J Pediatr 2011 [Epub ahead of print] PMID: 21885062.

The authors respond:

333 334

We appreciate Andrew Miller's assessment of our paper. He raises several issues about our paper,1 which was part of the 47th Respiratory Care Journal Conference, “Neonatal and Pediatric Respiratory Care: What Does the Future Hold?” We will address his 3 specific points around delivery devices, exacerbation management in the emergency department, and the role of asthma education.

1. The selection of aerosol delivery devices in the management of air-flow obstruction is a very polarized topic, often based on little scientific evidence and institutional or personal biases. Our review1 was not a prescriptive direction of any specific delivery device, and in fact mentioned pressurized metered-dose inhalers (pMDI) and small-volume nebulizers as comparable methodologies. The studies cited by Mr Miller are 10-15 years old and do not match today's common practice in most pediatric emergency room settings for “severe exacerbations.” The most comprehensive evidence-based systematic review of aerosol delivery devices was published by Dolovich et al.2 The publication reviewed only randomized controlled trials in which the same drug was delivered via nebulizers, pMDIs (with and without valved holding chambers), and powder inhalers for delivery of β agonists, anticholinergic agents, and inhaled corticosteroids in various clinical settings (emergency department, in-patient, intensive care, and out-patient) and patient populations (pediatric and adult asthma, and COPD). The conclusion of the Dolovich et al2 review is that each of the aerosol devices can work equally well in various clinical settings.

However, as pointed out by Hess regarding the Dolovich review,3 “the findings of the review should not be interpreted to mean that the device choice for a specific patient does not matter. Rather, the study simply says that each of the devices studied can work equally well in patients who can use them appropriately.” Hess goes on to state that, “For example, infants and toddlers are unlikely to correctly use a pMDI (without a valved holding chamber) or a powder inhaler. Also, there are few randomized controlled trials of pMDI without valved holding chamber in the emergency department, since most clinicians believe that the severe dyspnea experienced by many asthma patients in that setting would prevent them from using this device properly.”

All aerosol delivery devices have their advantages and disadvantages and have been thoroughly documented in the literature.3 We wholeheartedly agree with Mr Miller's comments that highlight the negative aspects of aerosol therapy administered by a “blow-by methodology” or without a proper mask-face interface and seal.4–6 This should not be considered an indictment of a specific device, but that of the bedside caregiver.

2. The conclusions from the meta-analysis and the Cochrane review basically do not show strong scientific or clinical evidence either through an intermittent or continuous nebulizer therapy strategy, and that is the statement we brought forth in our manuscript.1 We do not disagree with Mr Miller's assertions or claims about the efficacy and safety of continuous therapy in patients with severe air-flow obstruction. It is important to note that the Peters manuscript7 cited in the letter to the editor is a review and not a clinical trial, with a heavy slant of adult trials. In fact, in Peters' own conclusion of the review manuscript he states, “Continuous bronchodilator administration is a novel therapy for acute and severe bronchospasm that may be effective in mitigating the exacerbation, potentially avoiding hospitalization,” which seems to bring forth the same conclusion as we did that continuous bronchodilators in pediatric asthma exacerbations is neither better nor inferior to intermittent therapy.

We also agree with Mr Miller's comments on the use of magnesium and positive pressure as adjuncts in the management of asthma exacerbations, and we briefly mentioned those in the “In-Patient Asthma Treatment” section of our manuscript as novel therapies in asthma management. A meta-analysis of nebulized and intravenous magnesium sulfate has shown positive outcomes in patients with asthma exacerbations, with a heavy slant of evidence in those patients with severe air-flow obstruction.8

3. We wholeheartedly agree with Mr Miller's statement and conclusions on the benefit of asthma education, not only in the emergency department, but across all venues in the continuum of care of children with asthma visits.9 In a previous published manuscript by Kallstrom and Myers,10 we expressed the opportunity for respiratory therapists to make an large impact by being “key members of the asthma disease-management team, in acute-care settings, patients' homes, out-patient clinics, emergency departments, and in the community. Utilizing respiratory therapists as disease managers allows patients to be treated faster and more appropriately, discharged to home sooner, and decreases hospital admissions. Respiratory therapist are leaders in the emerging field of asthma disease management.”

References

  1. 1.↵
    1. Myers T,
    2. Tomasio L
    . Asthma: 2015 and beyond. Respir Care 2011;56(9):1389–1410.
    OpenUrlPubMed
  2. 2.↵
    1. Dolovich MB,
    2. Ahrens RC,
    3. Hess DR,
    4. Anderson P,
    5. Dhand R,
    6. Rau JL,
    7. et al
    . Device selection and outcomes of aerosol therapy: evidence- based guidelines: American College of Chest Physicians/American College of Asthma, Allergy, and Immunology Chest 2005;127(1):335–371.
    OpenUrlCrossRefPubMed
  3. 3.↵
    1. Hess DR
    . Aerosol delivery devices in the treatment of asthma. Respir Care 2008;53(6):699–723.
    OpenUrlAbstract/FREE Full Text
  4. 4.↵
    1. Rubin BK
    . Bye-bye, blow-by (editorial). Respir Care 2007;52(8):981.
    OpenUrlFREE Full Text
  5. 5.
    1. Janssens HM,
    2. Tiddens HA
    . Facemasks and aerosol delivery by metered dose inhaler-valved holding chamber in young children: a tight seal makes the difference. J Aerosol Med 2007;20(Suppl 1):S59–S65.
    OpenUrlPubMed
  6. 6.↵
    1. Iles R,
    2. Lister P,
    3. Edmunds AT
    . Crying significantly reduces absorption of aerosolized drug in infants. Arch Dis Child 1999;81:163–165.
    OpenUrlAbstract/FREE Full Text
  7. 7.↵
    1. Peters S
    . Continuous bronchodilator therapy. Chest 2007;131(1):286–289.
    OpenUrlCrossRefPubMed
  8. 8.↵
    1. Mohammed S,
    2. Goodacre S
    . Intravenous and nebulised magnesium sulphate for acute asthma: systematic review and meta-analysis. Emerg Med J 2007;24(12):823–830.
    OpenUrlAbstract/FREE Full Text
  9. 9.↵
    1. Jones MA
    . Asthma self-management patient education. Respir Care 2008;53(6):778–786.
    OpenUrlAbstract/FREE Full Text
  10. 10.↵
    1. Kallstrom TJ,
    2. Myers TR
    . Asthma disease management and the respiratory therapist. Respir Care 2008;53(6):770–777.
    OpenUrlAbstract/FREE Full Text
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Respiratory Care: 57 (2)
Respiratory Care
Vol. 57, Issue 2
1 Feb 2012
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Pediatric Asthma ManagementThe authors respond:
Andrew Miller, Timothy R Myers, Liza M Tomasio
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Pediatric Asthma ManagementThe authors respond:
Andrew Miller, Timothy R Myers, Liza M Tomasio
Respiratory Care Feb 2012, 57 (2) 332-333; DOI: 10.4187/respcare.01662
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