Abstract
Background: The clinical value of LVRS has been questioned in the absence of trials comparing it with pulmonary rehabilitation, the prevailing standard of care in COPD. Patients with heterogeneous emphysema are more likely to benefit from volume reduction than those with homogeneous disease. Disease specific quality of life is a responsive interpretable outcome that enables health professionals to identify the magnitude of the effect of an intervention across several domains.
Methods: Non-smoking patients aged <75 years with severe COPD (FEV1 <40% predicted, FEV1/FVC <0.7), hyperinflation, and evidence of heterogeneity were randomised to surgical or control groups after pulmonary rehabilitation and monitored at 3 month intervals for 12 months with no crossover between the groups. The primary outcome was disease specific quality of life as measured by the Chronic Respiratory Questionnaire (CRQ). Treatment failure was defined as death or functional decline (fall of 1 unit in any two domains of the CRQ). Secondary outcomes included pulmonary function and exercise capacity.
Results: LVRS resulted in significant between group differences in each domain of the CRQ at 12 months (change of 0.5 represents a small but important difference): dyspnoea 1.9 (95% confidence interval (CI) 1.3 to 2.6; p<0.0001); emotional function 1.5 (95% CI 0.9 to 2.1; p<0.0001); fatigue 2.0 (95% CI 1.4 to 2.6; p<0.0001); mastery 1.8 (95% CI 1.2 to 2.5; p<0.0001). In the control group one of 27 patients died and 16 experienced functional decline over 12 months. In the surgical group four of 28 patients died and three experienced functional decline (hazard ratio = 3.1 (95% CI 1.3 to 7.6; p=0.01). Between group improvements (p<0.05) in lung volumes, flow rates, and exercise were sustained at 12 months (RV -47% predicted (95% CI -71 to -23; p=0.0002); FEV1 0.3 l (95% CI 0.1 to 0. 5; p=0.0003); submaximal exercise 7.3 min (95% CI 3.9 to 10.8; p<0.0001); 6 minute walk 66 metres (95% CI 32 to 101; p=0.0002).
Conclusions: In COPD patients with heterogeneous emphysema, LVRS resulted in important benefits in disease specific quality of life compared with medical management, which were sustained at 12 months after treatment.
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Selected References
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- Argenziano M., Moazami N., Thomashow B., Jellen P. A., Gorenstein L. A., Rose E. A., Weinberg A. D., Steinglass K. M., Ginsburg M. E. Extended indications for lung volume reduction surgery in advanced emphysema. Ann Thorac Surg. 1996 Dec;62(6):1588–1597. doi: 10.1016/s0003-4975(96)00886-7. [DOI] [PubMed] [Google Scholar]
- Benditt J. O., Albert R. K. Lung reduction surgery. Great expectations and a cautionary note. Chest. 1995 Feb;107(2):297–298. doi: 10.1378/chest.107.2.297. [DOI] [PubMed] [Google Scholar]
- Benditt J. O., Wood D. E., McCool F. D., Lewis S., Albert R. K. Changes in breathing and ventilatory muscle recruitment patterns induced by lung volume reduction surgery. Am J Respir Crit Care Med. 1997 Jan;155(1):279–284. doi: 10.1164/ajrccm.155.1.9001325. [DOI] [PubMed] [Google Scholar]
- Cooper J. D., Patterson G. A., Sundaresan R. S., Trulock E. P., Yusen R. D., Pohl M. S., Lefrak S. S. Results of 150 consecutive bilateral lung volume reduction procedures in patients with severe emphysema. J Thorac Cardiovasc Surg. 1996 Nov;112(5):1319–1330. doi: 10.1016/S0022-5223(96)70147-2. [DOI] [PubMed] [Google Scholar]
- Criner G. J., Cordova F. C., Furukawa S., Kuzma A. M., Travaline J. M., Leyenson V., O'Brien G. M. Prospective randomized trial comparing bilateral lung volume reduction surgery to pulmonary rehabilitation in severe chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 1999 Dec;160(6):2018–2027. doi: 10.1164/ajrccm.160.6.9902117. [DOI] [PubMed] [Google Scholar]
- Cutaia M. Lung reduction surgery. Where are we heading? Chest. 1996 Apr;109(4):866–869. doi: 10.1378/chest.109.4.866. [DOI] [PubMed] [Google Scholar]
- Drazen J. M. Surgery for emphysema--not for everyone. N Engl J Med. 2001 Oct 11;345(15):1126–1127. doi: 10.1056/NEJM200110113451511. [DOI] [PubMed] [Google Scholar]
- Flaherty K. R., Kazerooni E. A., Curtis J. L., Iannettoni M., Lange L., Schork M. A., Martinez F. J. Short-term and long-term outcomes after bilateral lung volume reduction surgery : prediction by quantitative CT. Chest. 2001 May;119(5):1337–1346. doi: 10.1378/chest.119.5.1337. [DOI] [PubMed] [Google Scholar]
- Geddes D., Davies M., Koyama H., Hansell D., Pastorino U., Pepper J., Agent P., Cullinan P., MacNeill S. J., Goldstraw P. Effect of lung-volume-reduction surgery in patients with severe emphysema. N Engl J Med. 2000 Jul 27;343(4):239–245. doi: 10.1056/NEJM200007273430402. [DOI] [PubMed] [Google Scholar]
- Gelb A. F., Brenner M., McKenna R. J., Jr, Zamel N., Fischel R., Epstein J. D. Lung function 12 months following emphysema resection. Chest. 1996 Dec;110(6):1407–1415. doi: 10.1378/chest.110.6.1407. [DOI] [PubMed] [Google Scholar]
- Gelb A. F., McKenna R. J., Jr, Brenner M., Epstein J. D., Zamel N. Lung function 5 yr after lung volume reduction surgery for emphysema. Am J Respir Crit Care Med. 2001 Jun;163(7):1562–1566. doi: 10.1164/ajrccm.163.7.2009048. [DOI] [PubMed] [Google Scholar]
- Guyatt G. H., Berman L. B., Townsend M., Pugsley S. O., Chambers L. W. A measure of quality of life for clinical trials in chronic lung disease. Thorax. 1987 Oct;42(10):773–778. doi: 10.1136/thx.42.10.773. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Guyatt G. H., Pugsley S. O., Sullivan M. J., Thompson P. J., Berman L., Jones N. L., Fallen E. L., Taylor D. W. Effect of encouragement on walking test performance. Thorax. 1984 Nov;39(11):818–822. doi: 10.1136/thx.39.11.818. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hamacher J., Büchi S., Georgescu C. L., Stammberger U., Thurnheer R., Bloch K. E., Weder W., Russi E. W. Improved quality of life after lung volume reduction surgery. Eur Respir J. 2002 Jan;19(1):54–60. doi: 10.1183/09031936.02.00462001. [DOI] [PubMed] [Google Scholar]
- Hamacher J., Russi E. W., Weder W. Lung volume reduction surgery: a survey on the European experience. Chest. 2000 Jun;117(6):1560–1567. doi: 10.1378/chest.117.6.1560. [DOI] [PubMed] [Google Scholar]
- Jaeschke R., Singer J., Guyatt G. H. Measurement of health status. Ascertaining the minimal clinically important difference. Control Clin Trials. 1989 Dec;10(4):407–415. doi: 10.1016/0197-2456(89)90005-6. [DOI] [PubMed] [Google Scholar]
- Lacasse Y., Wong E., Guyatt G. H., King D., Cook D. J., Goldstein R. S. Meta-analysis of respiratory rehabilitation in chronic obstructive pulmonary disease. Lancet. 1996 Oct 26;348(9035):1115–1119. doi: 10.1016/S0140-6736(96)04201-8. [DOI] [PubMed] [Google Scholar]
- Make B. J., Fein A. M. Is volume reduction surgery appropriate in the treatment of emphysema? No. Am J Respir Crit Care Med. 1996 Apr;153(4 Pt 1):1205–1207. doi: 10.1164/ajrccm.153.4.8616542. [DOI] [PubMed] [Google Scholar]
- McKenna R. J., Jr, Brenner M., Fischel R. J., Singh N., Yoong B., Gelb A. F., Osann K. E. Patient selection criteria for lung volume reduction surgery. J Thorac Cardiovasc Surg. 1997 Dec;114(6):957–967. doi: 10.1016/S0022-5223(97)70010-2. [DOI] [PubMed] [Google Scholar]
- Mead J., Turner J. M., Macklem P. T., Little J. B. Significance of the relationship between lung recoil and maximum expiratory flow. J Appl Physiol. 1967 Jan;22(1):95–108. doi: 10.1152/jappl.1967.22.1.95. [DOI] [PubMed] [Google Scholar]
- Pompeo E., Marino M., Nofroni I., Matteucci G., Mineo T. C. Reduction pneumoplasty versus respiratory rehabilitation in severe emphysema: a randomized study. Pulmonary Emphysema Research Group. Ann Thorac Surg. 2000 Sep;70(3):948–954. doi: 10.1016/s0003-4975(00)01646-5. [DOI] [PubMed] [Google Scholar]
- Redelmeier D. A., Bayoumi A. M., Goldstein R. S., Guyatt G. H. Interpreting small differences in functional status: the Six Minute Walk test in chronic lung disease patients. Am J Respir Crit Care Med. 1997 Apr;155(4):1278–1282. doi: 10.1164/ajrccm.155.4.9105067. [DOI] [PubMed] [Google Scholar]
- Redelmeier D. A., Goldstein R. S., Min S. T., Hyland R. H. Spirometry and dyspnea in patients with COPD. When small differences mean little. Chest. 1996 May;109(5):1163–1168. doi: 10.1378/chest.109.5.1163. [DOI] [PubMed] [Google Scholar]
- Sciurba F. C., Rogers R. M., Keenan R. J., Slivka W. A., Gorcsan J., 3rd, Ferson P. F., Holbert J. M., Brown M. L., Landreneau R. J. Improvement in pulmonary function and elastic recoil after lung-reduction surgery for diffuse emphysema. N Engl J Med. 1996 Apr 25;334(17):1095–1099. doi: 10.1056/NEJM199604253341704. [DOI] [PubMed] [Google Scholar]
- Stirling G. R., Babidge W. J., Peacock M. J., Smith J. A., Matar K. S., Snell G. I., Colville D. J., Maddern G. J. Lung volume reduction surgery in emphysema: a systematic review. Ann Thorac Surg. 2001 Aug;72(2):641–648. doi: 10.1016/s0003-4975(01)02421-3. [DOI] [PubMed] [Google Scholar]
- Tonelli M. R., Benditt J. O., Albert R. K. Clinical experimentation. Lessons from lung volume reduction surgery. Chest. 1996 Jul;110(1):230–238. doi: 10.1378/chest.110.1.230. [DOI] [PubMed] [Google Scholar]
- Utz J. P., Hubmayr R. D., Deschamps C. Lung volume reduction surgery for emphysema: out on a limb without a NETT. Mayo Clin Proc. 1998 Jun;73(6):552–566. doi: 10.4065/73.6.552. [DOI] [PubMed] [Google Scholar]