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Reprinted from the August 1992 issue of RESPIRATORY CARE [Respir Care 1992;37(8):891–897]

AARC Clinical Practice Guideline

Selection of Aerosol Delivery Device

AD 1.0 PROCEDURE:

Selection of a device for delivery of aerosol to the lower airways

AD 2.0 DESCRIPTION:

The selection of a device for administration of pharmacologically active aerosol to the lower airway. The device selected should produce particles with a mass median aerodynamic diameter (MMAD) of 2-5 microns.(1,2)

These devices include

Metered dose inhalers (MDI)
MDIs with accessory device (eg, spacer)
Dry powder inhalers (DPI)
Small volume nebulizers (SVN)
Large volume nebulizers (LVN)
Ultrasonic nebulizers (USN)
This guideline does not address bland aerosol administration and sputum induction.

AD 3.0 SETTING:

Aerosol therapy can be administered in a number of settings including hospital, clinic, extended care facility, and home.

AD 4.0 INDICATIONS:

The need to deliver--as an aerosol to the lower airways--a medication from one of the following drug classifications:
Beta adrenergic agents
Anticholinergic agents (antimuscarinics)
Anti-inflammatory agents (eg, corticosteroids)
Mediator-modifying compounds (eg, cromolyn sodium)
Mucokinetics
The selection of a device for delivery of aerosol for parenchymal deposition (eg, antibiotics) will be addressed in another Guideline.

AD 5.0 CONTRAINDICATIONS:

5.1 No contraindications exist to the administration of aerosols by inhalation.
5.2 Contraindications related to the substances being delivered may exist. Consult the package insert for product-specific contraindications.

AD 6.0 HAZARDS/COMPLICATIONS:

6.1 Malfunction of device(3-5) and/or improper technique(6-12) may result in underdosing.
6.2 The potential exists for malfunction of device and/or improper technique (inappropriate patient use) to result in overdosing.
6.3 Complications of specific pharmacologic agent may occur.
6.4 Cardiotoxic effects of Freon have been reported as an idiosyncratic response that may be a problem with excessive use of MDI.(13-18)
6.5 Freon may affect the environment by its effect on the ozone layer.(19-21)
6.6 Repeated exposure to aerosols has been reported to produce asthmatic symptoms in some caregivers.(22)

AD 7.0 LIMITATIONS OF PROCEDURE OR DEVICE:

7.1 Only a small percent of output deposits in the airway (< or = 10%).23-27
7.2 Efficacy of the device is technique dependent (eg, coordination, breathing pattern, inspiratory hold).(6-9,28-32) The reader is referred to Kacmarek RM, Hess D. The interface between patient and aerosol generator. Respir Care 1991;36:952-976 for detailed descriptions of optimal technique.
7.3 Efficacy of the device is design dependent (ie, output and particle size).(4,5,33)
7.4 Reduced deposition of aerosol to the lower airways is associated with the following and may require consideration of increased dose:
7.4.1 mechanical ventilation;(26,27,34-36)
7.4.2 artificial airways;(34-39)
7.4.3 airway caliber (eg, infants and children);(22,37-39)
7.4.4 severity of obstruction.(40-42)
7.5 Patient compliance(12)
7.6 Limitations of specific devices
7.6.1 Metered Dose Inhaler:
7.6.1.1 Environmental concerns(CFC)(20,21)
7.6.1.2 Inadequate technique(6-8,28-32,43)
7.6.1.3 Inadequate instruction(9-12)
7.6.2 MDI accessory device (spacer or holding chamber):
7.6.2.1 Adds to cost over MDI alone
7.6.2.2 More bulky than MDI alone
7.6.3 Dry powder inhaler:
7.6.3.1 At the present time, patients must load each dose for most medica-tions.
7.6.3.2 Reduced inspiratory flow (< 60 L/min) can lead to reduced deposition.(44-46)
7.6.3.3 Irritation to airway(33)
7.6.3.4 Humidity may cause clumping of particles.
7.6.4 Small Volume Nebulizer:
7.6.4.1 Time- and labor-intensive
7.6.4.2 Less portable
7.6.4.3 Requires compressed-gas source or electricity
7.6.4.4 Vulnerable to contamination(47-50)
7.6.4.5 Lack of convenience may affect patient compliance
7.6.5 Large Volume Nebulizer:
7.6.5.1 Limited to acute and critical care setting
7.6.5.2 Requires close monitoring
7.6.5.3 Time- and cost-intensive
7.6.5.4 Vulnerable to contamination(46-49)
7.6.5.5 Reconcentration of solution may occur over long period of time due to evaporation by dry gas.
7.6.6 Ultrasonic Nebulizer:
7.6.6.1 Cost of device
7.6.6.2 Mechanical reliability
7.6.6.3 Requires electrical power source
7.6.6.4 Vulnerable to contamination

AD 8.0 ASSESSMENT OF NEED:

8.1 Based on proven therapeutic efficacy,(25,51-60) variety of available medications, and cost-effectiveness(51,61-64) the MDI with accessory device should be the first method to consider for administration of aerosol to the airway.
8.2 Lack of availability of prescribed drug in MDI, dry powder, or solution form.
8.3 Inability of the patient to use device properly with coaching and instruction should lead to consideration of other devices.
8.4 Patient preference for a given device that meets therapeutic objectives should be honored.
8.5 When there is need for large doses, MDI, SVN, or LVN may be used. Clear superiority of any one method has not been established. Convenience and patient tolerance of procedure should be considered.
8.6 When spontaneous ventilation is inadequate (eg, as in kyphoscoliosis or neuromuscular disorders, exacerbation of severe bronchospasm with impending respiratory failure that does not respond to other forms of therapy), delivery by a positive pressure breathing device (IPPB) should be considered.(65-67)

AD 9.0 ASSESSMENT OF OUTCOME:

9.1 Proper technique applying device
9.2 Patient response to or compliance with procedure
9.3 Objectively measured improvement (eg, increased FEV1 or peak flow)

AD 10.0 RESOURCES:

10.1 Equipment:
10.1.1 MDI-canister with actuator supplied by manufacturer; MDI accessory device that properly fits MDI mouthpiece or mask; adapters for specific circumstances (eg, tracheostomy)
10.1.2 Small volume nebulizer--gas source, tubing, flowmeter, and mouthpiece or mask
10.1.3 Large volume nebulizer--gas source, flowmeter, connecting tubing, and mouthpiece or mask
10.1.4 Mechanical ventilator--SVN or MDI, adapter in inspiratory line of circuit
10.1.5 IPPB machine (ie, pressure-limited ventilator)-nebulizer, gas source, connecting tubing, and mouthpiece or mask
10.1.6 Manual resuscitator--for 'bagging in' aerosol from MDI or SVN
10.2 Personnel:
10.2.1 Knowledge and skills at several levels are required to fully utilize and apply these devices.
10.2.1.1 Level II personnel provide initial assessments and care of the unstable patient:
10.2.1.1.1 utilizing proper technique for administration of MDI, accessory device, dry powder inhaler, SVN, LVN, USN; and SVN via IPPB;
10.2.1.1.2 practicing proper use, maintenance, and cleaning of equipment;
10.2.1.1.3 encouraging effective breathing patterns and coughing techniques;
10.2.1.1.4 modifying technique in response to adverse reactions;
10.2.1.1.5 modifying dosages and/or frequency as prescribed in re-sponse to severity of symptoms;
10.2.1.1.6 assessing patient condition and response to therapy;
10.2.1.1.7 performing auscultation and inspection and taking vital signs;
10.2.1.1.8 performing peak expiratory flowrate, spirometry, or ventilatory mechanics;
10.2.1.1.9 recognizing and res-ponding to therapeutic and adverse responses and complications of medication and/or procedure;
10.2.1.1.10 understanding and complying with Universal Precautions.
10.2.1.2 The patient, family, or home caregiver; Level-I hospital personnel provide routine care of the patient:
10.2.1.2.1 preparing, measuring, and mixing medication;
10.2.1.2.2 demonstrating proper technique for administration of medication;
10.2.1.2.3 using equipment properly;
10.2.1.2.4 cleaning equipment;
10.2.1.2.5 encouraging effective breathing patterns and coughing techniques;
10.2.1.2.6 modifying technique in response to adverse reactions as instructed, with appropriate communication with physician or Level-II care provider;
10.2.1.2.7 modifying dosages and/or frequency as prescribed, with appropriate communication with physician, in response to severity of symptoms;
10.2.1.2.8 using the peak flowmeter properly and documenting results.

AD 11.0 MONITORING:

11.1 Performance of the device
11.2 Technique of device application
11.3 Assessment of patient response including changes in vital signs

AD 12.0 FREQUENCY:

12.1 Initiation of therapy after careful assessment of need (as outlined above)
12.2 The change from one type of device to another is based on a change in patient's condition or ability to use the specific device.

AD 13.0 INFECTION CONTROL:

13.1 Universal Precautions must be exercised for body substance isolation.(67)
13.2 SVN and LVN are for single patient use or should be subjected to high-level disinfection between patients.
13.3 Published data establishing a safe use-period for SVN and LVN are lacking; however they probably should be changed or subjected to high-level disinfection at approximately 24-hour intervals.
13.4 Medications:
13.4.1 Medications should be handled aseptically.
13.4.2 Tap water should not be used as the diluent.(69)
13.4.3 Medications from multidose sources in acute care facilities must be handled aseptically and discarded after 24 hours, unless manufacturer's recommendations specifically state that medications may be stored longer than 24 hours.
13.5 MDI accessory devices are for single patient use only. Cleaning of accessory devices is based on aesthetic criteria.
13.6 There are no documented concerns with contamination of medication in MDI canisters.
Aerosol Guidelines Committee:

Jon Nilsestuen PhD RRT, Chairman, Houston TX
Jim Fink MBA RRT, San Francisco CA
Theodore Witek Jr DrPH RPFT RRT, Ridgefield CT
James Volpe III MEd RRT, San Diego CA

REFERENCES
  1. Dolovich M. Clinical aspects of aerosol physics. Respir Care 1991;36:931-938.
  2. Dolovich M. Physical principles underlying aerosol therapy. J Aerosol Med 1989;2:171-186.
  3. Merkus PJFM, van Essen-Zandlilet, EEM, Parievliet E, Borsboom G, Sterk PJ, Kerrebijn KF, et al. Changes of nebulizer output over the years. Eur Respir J 1992;5:488-491.
  4. Sterk PJ, Plomp A, van de Vate JF, Quanjer PH. Physical properties of aerosols produced by several jet and ultrasonic nebulisers. Bull Eur Physiopathol Respir 1984;20:65-72.
  5. Alvine GF, Rodgers P, Fitzsimmons KM, Ahrens RC. Disposable jet nebulizers: how reliable are they? Chest 1991;101:316-319.
  6. Allen SC, Prior A. What determines whether an elderly patient can use a metered dose inhaler correctly? Br J Dis Chest 1986;80:45-49.
  7. Lindgren S, Bake B, Larsson S. Clinical consequences of inadequate inhalation technique in asthma therapy. Eur J Respir Dis l987;70:93-98.
  8. Orehek J, Gayrard P, Grimaud C, Charpin J. Patient error in use of bronchodilator metered aerosols. Br Med J 1976;1:76.
  9. Guidry GG, Brown WD, Stogner SW, George RB. Incorrect use of metered dose inhalers by medical personnel. Chest 1992;101:31-33.
  10. Brashear RE. Pressurized aerosol bronchodilator instruction. Chest 1983;84:117.
  11. Newman SP, Clarke SW. The proper use of metered dose inhalers. Chest 1984;86:342-344.
  12. DeBlaquiere P, Christensen DB, Carter WB, Martin TK. Use and misuse of metered-dose inhalers by patients with chronic lung disease. Am Rev Respir Dis 1989; 140:910-916
  13. Speizer FE, Doll R, Heaf P. Observations on recent increase in mortality from asthma. Br Med J 1968;1: 339-343.
  14. Bass M. Sudden sniffing deaths. JAMA 1970;212:2075-2079.
  15. Speizer FE, Wegman DH, Ramirez A. Palpitation rates associated with fluorocarbon exposure in a hospital setting. N Engl J Med 1975;292:624-626.
  16. Brooks SM, Mintz S, Weiss E. Changes occurring after Freon inhalation. Am Rev Respir Dis 1972;105:640-643.
  17. Dollery CT, Williams FM, Draffan GH, Wise G, Sahyoun H, Paterson JW, et al. Artificial blood levels of fluorocarbons in asthmatic patients following use of pressurized aerosols. Clin Pharmacol Ther 1974;15:59-66.
  18. Paterson JW, Sudlow MF, Walker SR. Blood levels of fluorinated hydrocarbons in asthmatic patients after inhalation of pressurised aerosols. Lancet 1971;2:565.
  19. Silverglade A. Cardiac toxicity of aerosol propellants (editorial). JAMA 1972;222:827-828.
  20. Newman SP. Metered dose pressurized aerosols and the ozone layer. Eur Respir J 1990;3:395-397.
  21. Balmes JR. Propellant gases in metered dose inhalers: their impact on the global environment. Respir Care 1991;36:1037-1044.
  22. Kern DG, Franklin H. Asthma in respiratory therapists. Ann Intern Med 1989;110:767-773.
  23. Davis DS. Pharmacokinetics of inhaled substances. Postgrad Med J 1975;51(Suppl 7):69-75.
  24. Newhouse MT, Dolovich MB. Current concepts-control of asthma by aerosols. N Engl J Med 1986;315: 870-874.
  25. Ruffin RE, Kenworthy MC, Newhouse MT. Response of asthmatic patients to fenoterol inhalation: a method of quantifying the airway bronchodilator dose. Clin Pharmacol Ther 1978;23:338-345.
  26. Fuller HD, Dolovich MB, Posmituck G, Wong Pack W, Newhouse MT. Pressurized aerosol versus jet aerosol delivery to mechanically ventilated patients: comparison of dose to the lungs. Am Rev Respir Dis 1990;141:440-444.
  27. Fernandez A, Lazaro A, Garcia E, Aragon C, Cerda E. Bronchodilators in patients with chronic obstructive pulmonary disease on mechanical ventilation: utilization of metered-dose inhalers. Am Rev Respir Dis 1990;141: 164-168.
  28. Crompton GK. Problems patients have using pressurized aerosol inhalers. Eur J Respir Dis 1982;63(Suppl 119):101-104.
  29. O'Connell MB, Hewitt JM, Lacker TE. Consistency of evaluators assessing inhaler technique. Ann Allergy 1991;67:603-608.
  30. DeTullio PL, Corson ME. Effect of pharmacist counseling on ambulatory patients: use of aerosolized bronchodilators. Am J Hosp Pharm 1987;44:1802-1806.
  31. Self TH, Brooks JB, Lieberman P, Ryan MR. The value of demonstration and role of the pharmacist in teaching the correct use of pressurized bronchodilators. Can Med Assoc J 1983;128:129-131.
  32. Woodcock A. Training aid for pressurized inhalers. Br J Dis Chest 1980;74:395-397.
  33. Newman SP. Aerosol generators and delivery systems. Respir Care 1991;36:939-951.
  34. Gay PC, Patel HG, Nelson SB, Gilles B, Hubmayr RD. Metered dose inhalers for bronchodilator delivery in intubated, mechanically ventilated patients. Chest 1991; 99:66-71.
  35. Cameron D, Clay M, Silverman M. Evaluation of nebulizers for use in neonatal ventilatory circuits. Crit Care Med 1990;18:886-870.
  36. MacIntyre NR, Silver RM, Miller CW, Schuyler F, Coleman RE. Aerosol delivery in intubated, mechanically ventilated patients. Crit Care Med 1985;13:81-85.
  37. Ahrens RC, Ries RA, Popendorf W, Wiese JA. The delivery of therapeutic aerosols through endotracheal tubes. Pediatr Pulmonol 1986;2:19-26.
  38. Crogan SJ, Bishop MJ. Delivery efficiency of metered dose aerosols given via endotracheal tubes. Anesthesiology 1989;68:964-966.
  39. Yu CP, Nicolaides P, Soong TT. Effect of random airway sizes on aerosol deposition. Am Ind Hyg Assoc J 1979;40:999-1005.
  40. Kim CS, Lewars GA, Sackner MA. Measurement of total lung aerosol deposition as an index of lung abnormality. J Appl Physiol 1988;64:1527-1536.
  41. Dolovich MB, Sanchis J, Rossman C, Newhouse MT. Aerosol penetrance: a sensitive index of peripheral airway obstruction. J Appl Physiol 1976;40:468-471.
  42. Ilowite JS, Gorvoy JD, Smaldone GC. Quantitative deposition of aerosolized gentamicin in cystic fibrosis. Am Rev Respir Dis 1987;136:1445-1449.
  43. Lindgren S, Bake B, Larsson S. Clinical consequences of inadequate inhalation technique in asthma therapy. Eur J Respir Dis 1987;70:93-98.
  44. Pedersen S. Treatment of acute bronchoconstriction in children with a tube spacer aerosol and a dry powder inhaler. Allergy 1985;40:300-303.
  45. Assoufi BK, Hodson ME. High dose salbutamol in chronic airflow obstruction: comparison of nebulizer with Rotacaps. Respir Med 1989;83:415-420.
  46. van Lunteren E, Coreno A. Inhaled albuterol powder for pulmonary function testing. Chest 1992;101:985-988.
  47. Reinarz JA, Pierce Ak, Mays BM, Sanford JP. The potential role of inhalation therapy equipment in nosocomial pulmonary infection. J Clin Invest 1965;44: 831-839.
  48. Pierce AK, Sanford JP, Thomas GD, Leonard JS. Long term evaluation of decontamination of inhalation therapy equipment and the occurrence of necrotizing pneumonia. N Engl J Med 1970;282:528-531.
  49. Pierce AK, Sanford JP. Bacterial contamination of aerosols. Arch Intern Med 1973;131:156-159.
  50. Wexler MR, Rhame FR, Blumenthal MN, Cameron SB, Juni BA, Fish LA. Transmission of gram-negative bacilli to asthmatic children via home nebulizers. Ann Allergy 1991;66:267-271.
  51. Mestitz H, Copland J, McDonald C. Comparison of outpatient nebulized vs metered dose inhaler terbutaline in chronic airflow obstruction. Chest 1989;96:1237-1240.
  52. Jenkins SE, Heaton RW, Fulton TJ, Moxham J. Comparison of domiciliary nebulized salblutamol and salbutamol from a metered-dose inhaler in stable chronic airflow limitation. Chest 1987;91:804-807.
  53. Sackner M, Kim C. Auxiliary MDI aerosol delivery systems. Chest 1985;88(Suppl 2):161-169.
  54. O'Reilly JF, Gould G, Kendrick AH, Laszlo G. Domiciliary comparison of terbutaline treatment by metered dose inhaler with and without conical spacer in severe and moderately severe chronic asthma. Thorax 1986;41: 766-770.
  55. Morgan MDL, Singh BV, Frame MH, WIlliams SJ. Terbutaline aerosol given through pear spacer in acute severe asthma. Br Med J 1982;285:849-850.
  56. Cissik JH, Bode FR, Smith JA. Double-blind crossover study of five bronchodilator medications and two delivery methods in stable asthma. Chest 1986;90:489-493.
  57. Melville C, Phalan PD, Landau LI. Nebulized fenoterol compared with metered aerosol. Arch Dis Child 1985; 660:257-259.
  58. Levinson H, Reilly A, Worslely GII. Spacing devices and metered dose inhalers in childhood asthma. J Pediatr 1985;107:662-668.
  59. Turner TR, Corkery KJ, Ecleman D, Gelb AM, Lipavsky A, Sheppard D. Equivalence of inhaler with reservoir bag for treatment of acute airflow obstruction. Chest 1988;93:476-481.
  60. Berry R, Shinto R, Wong F, Despers J, Light R. Nebulizer vs spacer for bronchodilator delivery in patients hospitalized for acute exacerbations of COPD. Chest 1989;96:1241-1246.
  61. Bowton DL, Goldsmith WM, Haponik EF. Substitution of metered-dose inhalers for hand-held nebulizers: success and cost savings in a large acute-care hospital. Chest 1992;101:305-308.
  62. Tenholder MF, Bryson MJ, Whitlock WL. A model for conversion from small volume nebulizer to metered dose inhaler aerosol therapy. Chest 1992;101:634-637.
  63. Jasper AC, Mohsenifar Z, Kahan S, Goldberg HS, Koerner SK. Cost-benefit comparison of aerosol broncho-dilator methods in hospitalized patients. Chest 1987;91: 614-618.
  64. Summer W, Elston R, Tharpe L, Nelson S, Haponik EF. Aerosol bronchodilatordelivery methods: relative im-pact on pulmonary function and cost of respiratory care. Arch Intern Med 1989;149:618-623.
  65. Gonzalez ER, Burke TG. Review of the status of intermittent positive pressure breathing therapy. Drug Intell Clin Pharm 1984;18:974-976.
  66. AHCPR. Intermittent positive pressure breathing (IPPB) therapy. AHCPR Health Technology Assessment Re-ports 1991;1. Washington DC: U.S. Department of Health and Human Services, 1991.
  67. O'Donohue WJ Jr. IPPB past and present (point of view). Respir Care 1982;27:588-590.
  68. Centers for Disease Control. Update: Universal Precautions for prevention of transmission of human immunodeficiency virus, hepatitis B virus, and other bloodborne pathogens in health care settings. MMWR 1988;37:377-388.
  69. Arnow PM, Chou T, Weil D, Shapiro EN, Kretzschmar C. Nosocomial Legionnaires' disease caused by aerosolized tap water from respiratory devices. J Infect Dis 1982;146:460-467.
ADDITIONAL BIBLIOGRAPHY

Faculty and Working Group. American Association for Respiratory Care. Aerosol Consensus Conference Statement--1991. Respir Care 1991;36:916-921.

Newman SP. Delivery of therapeutic aerosols. In: Witek TJ, Schachter EN, eds. Advances in respiratory care pharma-cology. Philadelphia: JB Lippincott, 1988;1:53-82.

Moren F, Newhouse MT, Dolovich MD, eds. Aerosols in medicine: principles, diagnosis, and therapy. Amsterdam: Elsevier Science Publishers, 1985.

Witek TJ, Schachter EN. Delivery of drugs by aerosol. In: Respiratory care pharmacology and therapeutics. Philadelphia: WB Saunders, 1993.

Kim C, Eldridge M, Sackner M. Oropharyngeal deposition and delivery aspects of metered-dose inhaler aerosols. Am Rev Respir Dis 1987;135:157-164.

Volpe J, Kendall H, Gilbert D, Stowe B, Dundovich K. Metered dose inhalers. Respir Ther 1990;3(3):18-23.

Blake KV, Hoppe M, Harman E, Hendeles L. Relative amount of albuterol delivered to lung receptors from a metered-dose inhaler and nebulizer solution: bioassay by histamine bronchoprovocation. Chest 1991;101:309-315.

Newhouse M, Dolovich M. Aerosol therapy: nebulizer vs metered dose inhaler. Chest 1987;91:799-800.

Morley TF, Marozsan E, Zappasodi SJ, Gordon R, Griesback Rm Giudice JC. Comparison of beta-adrenergic agents delivered by nebulizer vs metered dose inhaler with InspirEase in hospitalized asthmatic patients. Chest 1988;94:1205-1210.

Newhouse MT. Principles of aerosol therapy. Chest 1982;(Suppl):39S-41S.

Newhouse MT, Dolovich M. Aerosol therapy of reversible obstruction: concepts and clinical applications. Chest 1987;91(Suppl):58S-64S.

Bryson MJ, Tenholder MF. Metered dose inhaler compliance with cost analysis. Chest 1990;98(2, Suppl):32S.

Olivenstein R, Wolkove N, Cohen C, Frank H, Kreisman H. A comparison of responses to albuterol delivered by two aerosol devices. Chest 1986;90:392-395.

Gervais A, Begin P. Bronchodilatation with a metered-dose inhaler plus an extension, using tidal breathing vs jet nebulization. Chest 1987;92:822-824.

Clausen JL. Self-administration of bronchodilators: cost effective? (editorial). Chest 1987;91:475.

Shim C, Williams MH. The adequacy of inhalation of aerosol from canister nebulizers. Am J Med 1980;69:891-894.

Paterson IC, Crompton GK. Use of pressurized aerosols by asthmatic patients. Br Med J 1976;1:76-77.

Epstein SW, Manning CPR, Ashley MJ, Corey PN. Survey of the clinical use of pressurized aerosol inhalers. Can Med Assoc J 1972;120:813-816.

Williams TJ. The importance of aerosol technique: does speed of inhalation matter? Br J Dis Chest 1982;76:223-228.

Pedersen S, Hansen OR, Fuglsang G. Influence of inspiratory flow rate upon the effect of a Turbuhaler. Arch Dis Child 1990;65:308-319.

Engel T, Heinig JM, Medsen F, Nikander K. Peak inspiratory flowrate and inspiratory vital capacity of patients with asthma measured with and without a new dry powder inhaler device (Turbuhaler). Eur Respir J 1990;3:1037-1041.

Newman SP. Aerosol inhalers. Br Med J 1990;300:1286-1287.

Ziment I. Bronchospasm. In: Respiratory pharmacology and therapeutics. Philadelphia: WB Saunders Co, 1978:105-146.

Schuh S, Parkin P, Rajan A, Canny G, Healy R, Rieder M, et al. High- versus low-dose, frequently administered, nebulized albuterol in children with severe, acute asthma. Pediatrics 1989;83:513-518.

Nelson HS, Raine D Jr, Doner HC, Posey WC. Subsensitivity to the bronchodilator action of albuterol produced by chronic administration. Am Rev Respir Dis 1977;116:871-878.

Plummer AL. The development of drug tolerance to beta2 adrenergic agents. Chest 1978;73(suppl);949-957

Interested persons may copy these Guidelines for noncommercial purposes of scientific or educational advancement. Please credit AARC and Respiratory Care Journal.

Reprinted from the August 1992 issue of RESPIRATORY CARE [Respir Care 1992;37(8):891–897]

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