Semin Respir Crit Care Med 2015; 36(04): 552-566
DOI: 10.1055/s-0035-1556058
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Supplemental Oxygen Therapy for Patients with Chronic Obstructive Pulmonary Disease

Igor Barjaktarevic
1   Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
,
Christopher B. Cooper
1   Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
2   Department of Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
› Author Affiliations
Further Information

Publication History

Publication Date:
03 August 2015 (online)

Abstract

Oxygen is necessary for aerobic metabolism. Since the human body cannot produce or store oxygen, a continuous and adequate delivery of oxygen needs to be secured by oxygen uptake from inhaled air via the respiratory system and oxygen delivery to body tissues via the circulation. Severely reduced lung function in advanced chronic obstructive pulmonary disease (COPD) may be a limiting factor for adequate oxygen uptake and patients with this disease may require supplemental oxygen therapy. While the methodology of oxygen delivery in home settings represents a continuously evolving field, oxygen therapy itself has been an integral part of the management of severely hypoxemic patients with COPD for more than 50 years despite the lack of full understanding of its effects and the relative paucity of clinical evidence supporting its use. In this article, we review the physiological effects and discuss the clinical benefits of oxygen therapy. We also evaluate the evidence supporting and arguing against its use in the published literature, discuss its risks and benefits, define criteria for prescribing oxygen therapy, and review methods of oxygen delivery in home settings.

 
  • References

  • 1 Anthonisen NR. Prognosis in chronic obstructive pulmonary disease: results from multicenter clinical trials. Am Rev Respir Dis 1989; 140 (3, Pt 2) S95-S99
  • 2 Kanner RE, Renzetti Jr AD, Stanish WM, Barkman Jr HW, Klauber MR. Predictors of survival in subjects with chronic airflow limitation. Am J Med 1983; 74 (2) 249-255
  • 3 Croxton TL, Bailey WC. Long-term oxygen treatment in chronic obstructive pulmonary disease: recommendations for future research: an NHLBI workshop report. Am J Respir Crit Care Med 2006; 174 (4) 373-378
  • 4 Juratsch CE, Whipp BJ. Control of hyperpnea associated with increased dispersion of Va/Q. Chest 1980; 77 (2, Suppl): 300-303
  • 5 Report of the Medical Research Council Working Party. Long term domiciliary oxygen therapy in chronic hypoxic cor pulmonale complicating chronic bronchitis and emphysema. Lancet 1981; 1 (8222) 681-686
  • 6 Barbera JA, Ramirez J, Roca J, Wagner PD, Sanchez-Lloret J, Rodriguez-Roisin R. Lung structure and gas exchange in mild chronic obstructive pulmonary disease. Am Rev Respir Dis 1990; 141 (4, Pt 1): 895-901
  • 7 Sandek K, Bratel T, Hellström G, Lagerstrand L. Ventilation-perfusion inequality and carbon dioxide sensitivity in hypoxaemic chronic obstructive pulmonary disease (COPD) and effects of 6 months of long-term oxygen treatment (LTOT). Clin Physiol 2001; 21 (5) 584-593
  • 8 Wagner PD, Dantzker DR, Dueck R, Clausen JL, West JB. Ventilation-perfusion inequality in chronic obstructive pulmonary disease. J Clin Invest 1977; 59 (2) 203-216
  • 9 Kent BD, Mitchell PD, McNicholas WT. Hypoxemia in patients with COPD: cause, effects, and disease progression. Int J Chron Obstruct Pulmon Dis 2011; 6: 199-208
  • 10 Aubier M, Trippenbach T, Roussos C. Respiratory muscle fatigue during cardiogenic shock. J Appl Physiol 1981; 51 (2) 499-508
  • 11 Smith P, Rodgers B, Heath D, Yacoub M. The ultrastructure of pulmonary arteries and arterioles in emphysema. J Pathol 1992; 167 (1) 69-75
  • 12 Weitzenblum E, Chaouat A, Kessler R. Pulmonary hypertension in chronic obstructive pulmonary disease. Pneumonol Alergol Pol 2013; 81 (4) 390-398
  • 13 Cooper CB. Exercise in chronic pulmonary disease: limitations and rehabilitation. Med Sci Sports Exerc 2001; 33 (7, Suppl): S643-S646
  • 14 Stansfield DA, Stansfield RG. Dr Thomas Beddoes and James Watt: preparatory work 1794-96 for the Bristol Pneumatic Institute. Med Hist 1986; 30 (3) 276-302
  • 15 Haldane JS. The Therapeutic Administration of Oxygen. BMJ 1917; 1 (2928) 181-183
  • 16 Cotes JE, Gilson JC. Effect of oxygen on exercise ability in chronic respiratory insufficiency; use of portable apparatus. Lancet 1956; 270 (6928) 872-876
  • 17 Barach AL. Ambulatory oxygen therapy: oxygen inhalation at home and out-of-doors. Dis Chest 1959; 35 (3) 229-241
  • 18 Campbell EJ. A method of controlled oxygen administration which reduces the risk of carbon-dioxide retention. Lancet 1960; 2 (7140) 12-14
  • 19 Levine BE, Bigelow DB, Hamstra RD , et al. The role of long-term continuous oxygen administration in patients with chronic airway obstruction with hypoxemia. Ann Intern Med 1967; 66 (4) 639-650
  • 20 Stark RD, Finnegan P, Bishop JM. Daily requirement of oxygen to reverse pulmonary hypertension in patients with chronic bronchitis. BMJ 1972; 3 (5829) 724-728
  • 21 Petty TL, Finigan MM. Clinical evaluation of prolonged ambulatory oxygen therapy in chronic airway obstruction. Am J Med 1968; 45 (2) 242-252
  • 22 Neff TA, Petty TL. Long-term continuous oxygen therapy in chronic airway obstruction. Mortality in relationship to cor pulmonale, hypoxia, and hypercapnia. Ann Intern Med 1970; 72 (5) 621-626
  • 23 Stoller JK, Panos RJ, Krachman S, Doherty DE, Make B ; Long-term Oxygen Treatment Trial Research Group. Oxygen therapy for patients with COPD: current evidence and the long-term oxygen treatment trial. Chest 2010; 138 (1) 179-187
  • 24 Wagner PD. Diffusive resistance to O2 transport in muscle. Acta Physiol Scand 2000; 168 (4) 609-614
  • 25 Engelen MP, Schols AM, Does JD, Gosker HR, Deutz NE, Wouters EF. Exercise-induced lactate increase in relation to muscle substrates in patients with chronic obstructive pulmonary disease. Am J Respir Crit Care Med 2000; 162 (5) 1697-1704
  • 26 Stein DA, Bradley BL, Miller WC. Mechanisms of oxygen effects on exercise in patients with chronic obstructive pulmonary disease. Chest 1982; 81 (1) 6-10
  • 27 Springer C, Barstow TJ, Wasserman K, Cooper DM. Oxygen uptake and heart rate responses during hypoxic exercise in children and adults. Med Sci Sports Exerc 1991; 23 (1) 71-79
  • 28 DeGaute JP, Domenighetti G, Naeije R, Vincent JL, Treyvaud D, Perret C. Oxygen delivery in acute exacerbation of chronic obstructive pulmonary disease. Effects of controlled oxygen therapy. Am Rev Respir Dis 1981; 124 (1) 26-30
  • 29 Morrison DA, Henry R, Goldman S. Preliminary study of the effects of low flow oxygen on oxygen delivery and right ventricular function in chronic lung disease. Am Rev Respir Dis 1986; 133 (3) 390-395
  • 30 Kawakami Y, Kishi F, Yamamoto H, Miyamoto K. Relation of oxygen delivery, mixed venous oxygenation, and pulmonary hemodynamics to prognosis in chronic obstructive pulmonary disease. N Engl J Med 1983; 308 (18) 1045-1049
  • 31 Cooper CB, Celli B. Venous admixture in COPD: pathophysiology and therapeutic approaches. COPD 2008; 5 (6) 376-381
  • 32 Cotes JE, Pisa Z, Thomas AJ. Effect of breathing oxygen upon cardiac output, heart rate, ventilation, systemic and pulmonary blood pressure in patients with chronic lung disease. Clin Sci 1963; 25: 305-321
  • 33 Kitchin AH, Lowther CP, Matthews MB. The effects of exercise and of breathing oxygen-enriched air on the pulmonary circulation in emphysema. Clin Sci 1961; 21: 93-106
  • 34 Pierce AK, Paez PN, Miller WF. Exercise training with the aid of a portable oxygen supply in patients with emphysema. Am Rev Respir Dis 1965; 91: 653-659
  • 35 Scano G, van Meerhaeghe A, Willeput R, Vachaudez JP, Sergysels R. Effect of oxygen on breathing during exercise in patients with chronic obstructive lung disease. Eur J Respir Dis 1982; 63 (1) 23-30
  • 36 Bradley JM, Lasserson T, Elborn S, Macmahon J, O'neill B. A systematic review of randomized controlled trials examining the short-term benefit of ambulatory oxygen in COPD. Chest 2007; 131 (1) 278-285
  • 37 Mannix ET, Manfredi F, Palange P, Dowdeswell IRG, Farber MO. Oxygen may lower the O2 cost of ventilation in chronic obstructive lung disease. Chest 1992; 101 (4) 910-915
  • 38 Beck GJ, Nanda K, Bickerman HA. Effect of oxygen on patients with pulmonary emphysema. Changes in minute ventilation during rest and after exercise. JAMA 1962; 179: 404-409
  • 39 Aubier M, Murciano D, Milic-Emili J , et al. Effects of the administration of O2 on ventilation and blood gases in patients with chronic obstructive pulmonary disease during acute respiratory failure. Am Rev Respir Dis 1980; 122 (5) 747-754
  • 40 Dejours P, Mithoefer JC, Labrousse Y. Influence of local chemical change on ventilatory stimulus from the legs during exercise. J Appl Physiol 1957; 10 (3) 372-375
  • 41 Bye PT, Esau SA, Levy RD , et al. Ventilatory muscle function during exercise in air and oxygen in patients with chronic air-flow limitation. Am Rev Respir Dis 1985; 132 (2) 236-240
  • 42 Bye PT, Esau SA, Walley KR, Macklem PT, Pardy RL. Ventilatory muscles during exercise in air and oxygen in normal men. J Appl Physiol 1984; 56 (2) 464-471
  • 43 Criner GJ, Celli BR. Ventilatory muscle recruitment in exercise with O2 in obstructed patients with mild hypoxemia. J Appl Physiol (1985) 1987; 63 (1) 195-200
  • 44 Abraham AS, Cole RB, Bishop JM. Reversal of pulmonary hypertension by prolonged oxygen administration to patients with chronic bronchitis. Circ Res 1968; 23 (1) 147-157
  • 45 Hunt JM, Copland J, McDonald CF, Barter CE, Rochford PD, Pierce RJ. Cardiopulmonary response to oxygen therapy in hypoxaemic chronic airflow obstruction. Thorax 1989; 44 (11) 930-936
  • 46 Abraham AS, Hedworth-Whitty RB, Bishop JM. Effects of acute hypoxia and hypervolaemia singly and together, upon the pulmonary circulation in patients with chronic bronchitis. Clin Sci 1967; 33 (2) 371-380
  • 47 Selinger SR, Kennedy TP, Buescher P , et al. Effects of removing oxygen from patients with chronic obstructive pulmonary disease. Am Rev Respir Dis 1987; 136 (1) 85-91
  • 48 Baudouin SV, Bott J, Ward A, Deane C, Moxham J. Short term effect of oxygen on renal haemodynamics in patients with hypoxaemic chronic obstructive airways disease. Thorax 1992; 47 (7) 550-554
  • 49 Heffner JE. The story of oxygen. Respir Care 2013; 58 (1) 18-31
  • 50 Nocturnal Oxygen Therapy Trial Group. Continuous or nocturnal oxygen therapy in hypoxemic chronic obstructive lung disease: a clinical trial. Ann Intern Med 1980; 93 (3) 391-398
  • 51 Chambellan A, Chailleux E, Similowski T ; ANTADIR Observatory Group. Prognostic value of the hematocrit in patients with severe COPD receiving long-term oxygen therapy. Chest 2005; 128 (3) 1201-1208
  • 52 Celli BR, Cote CG, Marin JM , et al. The body-mass index, airflow obstruction, dyspnea, and exercise capacity index in chronic obstructive pulmonary disease. N Engl J Med 2004; 350 (10) 1005-1012
  • 53 Block AJ, Castle JR, Keitt AS. Chronic oxygen therapy. Treatment of chronic obstructive pulmonary disease at sea level. Chest 1974; 65 (3) 279-288
  • 54 Adams RP, Welch HG. Oxygen uptake, acid-base status, and performance with varied inspired oxygen fractions. J Appl Physiol 1980; 49 (5) 863-868
  • 55 Johnson TS, Ellis JH, Steele PP. Improvement of platelet survival time with oxygen in patients with chronic obstructive airway disease. Am Rev Respir Dis 1978; 117 (2) 255-257
  • 56 Cooper CB, Howard P. Long term follow-up of domiciliary oxygen therapy in hypoxic cor pulmonale associated with chronic obstructive airways disease. Bull Int Union Tuberc Lung Dis 1987; 62 (1-2): 35-36
  • 57 Cooper CB, Waterhouse J, Howard P. Twelve year clinical study of patients with hypoxic cor pulmonale given long term domiciliary oxygen therapy. Thorax 1987; 42 (2) 105-110
  • 58 Cooper CB, Howard P. An analysis of sequential physiologic changes in hypoxic cor pulmonale during long-term oxygen therapy. Chest 1991; 100 (1) 76-80
  • 59 Chaouat A, Weitzenblum E, Kessler R , et al. A randomized trial of nocturnal oxygen therapy in chronic obstructive pulmonary disease patients. Eur Respir J 1999; 14 (5) 1002-1008
  • 60 Fletcher EC, Luckett RA, Goodnight-White S, Miller CC, Qian W, Costarangos-Galarza C. A double-blind trial of nocturnal supplemental oxygen for sleep desaturation in patients with chronic obstructive pulmonary disease and a daytime PaO2 above 60 mm Hg. Am Rev Respir Dis 1992; 145 (5) 1070-1076
  • 61 Górecka D, Gorzelak K, Sliwiński P, Tobiasz M, Zieliński J. Effect of long-term oxygen therapy on survival in patients with chronic obstructive pulmonary disease with moderate hypoxaemia. Thorax 1997; 52 (8) 674-679
  • 62 Crockett AJ, Cranston JM, Moss JR, Alpers JH. A review of long-term oxygen therapy for chronic obstructive pulmonary disease. Respir Med 2001; 95 (6) 437-443
  • 63 Grant I, Heaton RK, McSweeny AJ, Adams KM, Timms RM. Neuropsychologic findings in hypoxemic chronic obstructive pulmonary disease. Arch Intern Med 1982; 142 (8) 1470-1476
  • 64 Koo KW, Sax DS, Snider GL. Arterial blood gases and pH during sleep in chronic obstructive pulmonary disease. Am J Med 1975; 58 (5) 663-670
  • 65 Heaton RK, Grant I, McSweeny AJ, Adams KM, Petty TL. Psychologic effects of continuous and nocturnal oxygen therapy in hypoxemic chronic obstructive pulmonary disease. Arch Intern Med 1983; 143 (10) 1941-1947
  • 66 Petty TL, Neff TA, Creagh CE , et al. Outpatient oxygen therapy in chronic obstructive pulmonary disease. A review of 13 years' experience and an evaluation of modes of therapy. Arch Intern Med 1979; 139 (1) 28-32
  • 67 Zack MB, Palange AV. Oxygen supplemented exercise of ventilatory and nonventilatory muscles in pulmonary rehabilitation. Chest 1985; 88 (5) 669-675
  • 68 Davidson AC, Leach R, George RJ, Geddes DM. Supplemental oxygen and exercise ability in chronic obstructive airways disease. Thorax 1988; 43 (12) 965-971
  • 69 Swinburn CR, Wakefield JM, Jones PW. Relationship between ventilation and breathlessness during exercise in chronic obstructive airways disease is not altered by prevention of hypoxaemia. Clin Sci (Lond) 1984; 67 (5) 515-519
  • 70 Woodcock AA, Gross ER, Geddes DM. Oxygen relieves breathlessness in “pink puffers”. Lancet 1981; 1 (8226) 907-909
  • 71 Bradley BL, Garner AE, Billiu D, Mestas JM, Forman J. Oxygen-assisted exercise in chronic obstructive lung disease. The effect on exercise capacity and arterial blood gas tensions. Am Rev Respir Dis 1978; 118 (2) 239-243
  • 72 Raimondi AC, Edwards RH, Denison DM, Leaver DG, Spencer RG, Siddorn JA. Exercise tolerance breathing a low density gas mixture, 35 per cent oxygen and air in patients with chronic obstructive bronchitis. Clin Sci 1970; 39 (5) 675-685
  • 73 Vyas MN, Banister EW, Morton JW, Grzybowski S. Response to exercise in patients with chronic airway obstruction. II. Effects of breathing 40 per cent oxygen. Am Rev Respir Dis 1971; 103 (3) 401-412
  • 74 Leggett RJ, Flenley DC. Portable oxygen and exercise tolerance in patients with chronic hypoxic cor pulmonale. BMJ 1977; 2 (6079) 84-86
  • 75 Lilker ES, Karnick A, Lerner L. Portable oxygen in chronic obstructive lung disease with hypoxemia and cor pulmonale. A controlled double-blind crossover study. Chest 1975; 68 (2) 236-241
  • 76 Somfay A, Porszasz J, Lee SM, Casaburi R. Dose-response effect of oxygen on hyperinflation and exercise endurance in nonhypoxaemic COPD patients. Eur Respir J 2001; 18 (1) 77-84
  • 77 Evans TW, Waterhouse J, Howard P. Clinical experience with the oxygen concentrator. Br Med J (Clin Res Ed) 1983; 287 (6390) 459-461
  • 78 Longo AM, Moser KM, Luchsinger PC. The role of oxygen therapy in the rehabilitation of patients with chronic obstructive pulmonary disease. Am Rev Respir Dis 1971; 103 (5) 690-697
  • 79 Waterhouse JC, Howard P. Breathlessness and portable oxygen in chronic obstructive airways disease. Thorax 1983; 38 (4) 302-306
  • 80 Marques-Magallanes JA, Storer TW, Cooper CB. Treadmill exercise duration and dyspnea recovery time in chronic obstructive pulmonary disease: effects of oxygen breathing and repeated testing. Respir Med 1998; 92 (5) 735-738
  • 81 Fleetham J, West P, Mezon B, Conway W, Roth T, Kryger M. Sleep, arousals, and oxygen desaturation in chronic obstructive pulmonary disease. The effect of oxygen therapy. Am Rev Respir Dis 1982; 126 (3) 429-433
  • 82 Cormick W, Olson LG, Hensley MJ, Saunders NA. Nocturnal hypoxaemia and quality of sleep in patients with chronic obstructive lung disease. Thorax 1986; 41 (11) 846-854
  • 83 Calverley PM, Brezinova V, Douglas NJ, Catterall JR, Flenley DC. The effect of oxygenation on sleep quality in chronic bronchitis and emphysema. Am Rev Respir Dis 1982; 126 (2) 206-210
  • 84 Wynne JW, Block AJ, Hemenway J, Hunt LA, Flick MR. Disordered breathing and oxygen desaturation during sleep in patients with chronic obstructive lung disease (COLD). Am J Med 1979; 66 (4) 573-579
  • 85 Swinburn CR, Wakefield JM, Jones PW. Performance, ventilation, and oxygen consumption in three different types of exercise test in patients with chronic obstructive lung disease. Thorax 1985; 40 (8) 581-586
  • 86 Krachman SL, Chatila W, Martin UJ , et al; National Emphysema Treatment Trial Research Group. Effects of lung volume reduction surgery on sleep quality and nocturnal gas exchange in patients with severe emphysema. Chest 2005; 128 (5) 3221-3228
  • 87 Make B, Krachman S, Panos RJ, Doherty DE, Stoller JK. Oxygen therapy in advanced COPD: in whom does it work?. Semin Respir Crit Care Med 2010; 31 (3) 334-342
  • 88 Fletcher EC, Miller J, Divine GW, Fletcher JG, Miller T. Nocturnal oxyhemoglobin desaturation in COPD patients with arterial oxygen tensions above 60 mm Hg. Chest 1987; 92 (4) 604-608
  • 89 Shepard Jr JW, Garrison MW, Grither DA, Evans R, Schweitzer PK. Relationship of ventricular ectopy to nocturnal oxygen desaturation in patients with chronic obstructive pulmonary disease. Am J Med 1985; 78 (1) 28-34
  • 90 Fletcher EC, Luckett RA, Miller T, Costarangos C, Kutka N, Fletcher JG. Pulmonary vascular hemodynamics in chronic lung disease patients with and without oxyhemoglobin desaturation during sleep. Chest 1989; 95 (4) 757-764
  • 91 Thomson L, Paton J. Oxygen toxicity. Paediatr Respir Rev 2014; 15 (2) 120-123
  • 92 Nathan C. Immunology: Oxygen and the inflammatory cell. Nature 2003; 422 (6933) 675-676
  • 93 Hampson NB, Simonson SG, Kramer CC, Piantadosi CA. Central nervous system oxygen toxicity during hyperbaric treatment of patients with carbon monoxide poisoning. Undersea Hyperb Med 1996; 23 (4) 215-219
  • 94 Drack AV. Preventing blindness in premature infants. N Engl J Med 1998; 338 (22) 1620-1621
  • 95 Anderson Jr B, Farmer Jr JC. Hyperoxic myopia. Trans Am Ophthalmol Soc 1978; 76: 116-124
  • 96 Butler Jr FK, White E, Twa M. Hyperoxic myopia in a closed-circuit mixed-gas scuba diver. Undersea Hyperb Med 1999; 26 (1) 41-45
  • 97 Clark JM, Lambertsen CJ. Pulmonary oxygen toxicity: a review. Pharmacol Rev 1971; 23 (2) 37-133
  • 98 Dripps RD, Comroe Jr JH. The effect of the inhalation of high and low oxygen concentrations on respiration, pulse rate, ballistocardiogram and arterial oxygen saturation (oximeter) of normal individuals. Am J Physiol 1947; 149 (2) 277-291
  • 99 Bitterman H. Bench-to-bedside review: oxygen as a drug. Crit Care 2009; 13 (1) 205
  • 100 Sevitt S. Diffuse and focal oxygen pneumonitis. A preliminary report on the threshold of pulmonary oxygen toxicity in man. J Clin Pathol 1974; 27 (1) 21-30
  • 101 Tryka AF, Godleski JJ, Brain JD. Differences in effects of immediate and delayed hyperoxia exposure on bleomycin-induced pulmonary injury. Cancer Treat Rep 1984; 68 (5) 759-764
  • 102 Nolte D. [Advantages and hazards of oxygen therapy in chronic respiratory insufficiency]. Wien Med Wochenschr 1976; 126 (23) 325-329
  • 103 Vergeret J, Tunon De Lara M, Douvier JJ , et al. Compliance of COPD patients with long term oxygen therapy. Eur J Respir Dis Suppl 1986; 146: 421-425
  • 104 Baudouin SV, Waterhouse JC, Tahtamouni T, Smith JA, Baxter J, Howard P. Long term domiciliary oxygen treatment for chronic respiratory failure reviewed. Thorax 1990; 45 (3) 195-198
  • 105 Lacasse Y, LaForge J, Maltais F. Got a match? Home oxygen therapy in current smokers. Thorax 2006; 61 (5) 374-375
  • 106 Baruchin O, Yoffe B, Baruchin AM. Burns in inpatients by simultaneous use of cigarettes and oxygen therapy. Burns 2004; 30 (8) 836-838
  • 107 Markovitz GH, Colthurst J, Storer TW, Cooper CB. Effective inspired oxygen concentration measured via transtracheal and oral gas analysis. Respir Care 2010; 55 (4) 453-459
  • 108 Schiff MM, Massaro D. Effect of oxygen administration by a Venturi apparatus on arterial blood gas values in patients with respiratory failure. N Engl J Med 1967; 277 (18) 950-953
  • 109 Moore-Gillon JC, George RJ, Geddes DM. An oxygen conserving nasal cannula. Thorax 1985; 40 (11) 817-819
  • 110 Gotera C, Díaz Lobato S, Pinto T, Winck JC. Clinical evidence on high flow oxygen therapy and active humidification in adults. Rev Port Pneumol 2013; 19 (5) 217-227
  • 111 Qaseem A, Wilt TJ, Weinberger SE , et al; American College of Physicians; American College of Chest Physicians; American Thoracic Society; European Respiratory Society. Diagnosis and management of stable chronic obstructive pulmonary disease: a clinical practice guideline update from the American College of Physicians, American College of Chest Physicians, American Thoracic Society, and European Respiratory Society. Ann Intern Med 2011; 155 (3) 179-191
  • 112 Qaseem A, Snow V, Shekelle P , et al; Clinical Efficacy Assessment Subcommittee of the American College of Physicians. Diagnosis and management of stable chronic obstructive pulmonary disease: a clinical practice guideline from the American College of Physicians. Ann Intern Med 2007; 147 (9) 633-638
  • 113 Doherty DE, Petty TL, Bailey W , et al. Recommendations of the 6th long-term oxygen therapy consensus conference. Respir Care 2006; 51 (5) 519-525
  • 114 Petty TL, O'Donohue Jr WJ. Further recommendations for prescribing, reimbursement, technology development, and research in long-term oxygen therapy. Summary of the Fourth Oxygen Consensus Conference, Washington, D.C., October 15-16, 1993. Am J Respir Crit Care Med 1994; 150 (3) 875-877
  • 115 Sun XG, Hansen JE, Oudiz RJ, Wasserman K. Exercise pathophysiology in patients with primary pulmonary hypertension. Circulation 2001; 104 (4) 429-435
  • 116 Katsenos S, Constantopoulos SH. Long-Term Oxygen Therapy in COPD: Factors Affecting and Ways of Improving Patient Compliance. Pulm Med 2011; 2011: 325362
  • 117 Lacasse Y, Lecours R, Pelletier C, Bégin R, Maltais F. Randomised trial of ambulatory oxygen in oxygen-dependent COPD. Eur Respir J 2005; 25 (6) 1032-1038
  • 118 Cullen DL. Long term oxygen therapy adherence and COPD: what we don't know. Chron Respir Dis 2006; 3 (4) 217-222
  • 119 Peckham DG, McGibbon K, Tonkinson J, Plimbley G, Pantin C. Improvement in patient compliance with long-term oxygen therapy following formal assessment with training. Respir Med 1998; 92 (10) 1203-1206
  • 120 Howard P, Waterhouse JC, Billings CG. Compliance with long-term oxygen therapy by concentrator. Eur Respir J 1992; 5 (1) 128-129
  • 121 Ringbaek T, Lange P, Viskum K. Compliance with LTOT and consumption of mobile oxygen. Respir Med 1999; 93 (5) 333-337
  • 122 Zhu Z, Barnette RK, Fussell KM, Michael Rodriguez R, Canonico A, Light RW. Continuous oxygen monitoring—a better way to prescribe long-term oxygen therapy. Respir Med 2005; 99 (11) 1386-1392
  • 123 Neri M, Melani AS, Miorelli AM , et al; Educational Study Group of the Italian Association of Hospital Pulmonologists (AIPO). Long-term oxygen therapy in chronic respiratory failure: a Multicenter Italian Study on Oxygen Therapy Adherence (MISOTA). Respir Med 2006; 100 (5) 795-806
  • 124 American Thoracic Society. Standards for the diagnosis and care of patients with chronic obstructive pulmonary disease. Am J Respir Crit Care Med 1995; 152 (5, Pt 2): S77-S121