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Table 1 Summary of RCTs on conservative medical therapy and LVRS

From: Several clinical interests regarding lung volume reduction surgery for severe emphysema: meta-analysis and systematic review of randomized controlled trials

Author Year published Cases (N) Imaging diagnosis Cases underwent conservative medical therapy (n) Cases underwent LVRS(n)
Criner, G. 1999 37 CT scan 18 19
J[16] Geddes, D[12] 2000 48 CT scan 24 24
Pompeo, E. [17] 2000 60 CT scan 30 30
Fishman, A [18] 2003 1218 CT scan 608 610
Goldstein, R. S [19] 2003 55 CT and V/Q scan* 28 27
Mineo[20] 2004 60 CT scan 30 30
Hillerdal, G. [2] 2005 106 CT and V/Q Scan* 53 53
Miller, J. D[21] 2005 93 CT and V/Q Scan* 58 35
  1. *: V/Q scan, also known as lung scan, which evaluates both the Ventilation and Perfusion of the lungs using scintigraphy and medical isotopes. Q is the symbol for perfusion which represents the movement of blood through the arteries that supply the lung.