TY - JOUR
T1 - Using Pulmonary Function Data to Assess Outcomes in the Endoscopic Management of Subglottic Stenosis
AU - Kraft, Shannon M.
AU - Sykes, Kevin
AU - Palmer, Andrew
AU - Schindler, Joshua
N1 - Publisher Copyright:
© The Author(s) 2014.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Objective: This study aimed to examine the authors' experience with endoscopic management of idiopathic subglottic stenosis (iSGS), and to identify pulmonary function test (PFT) values that can be used to quantify outcomes. Methods: Retrospective review. Results: Twenty-five patients with a new diagnosis of iSGS were seen between 2006 and 2012. Median age at surgery was 45.3 years (interquartile range [IQR], 38.5-67.0), and median body mass index was 28.7 kg/m2 (IQR, 23.5-32.1). Forty-five procedures were performed. Median preoperative stenosis was 56.8% (Cotton-Myer grade 2). The typical stenosis began 15 mm below the true vocal folds and was 12 mm long. Median follow-up was 21.4 months (IQR, 5.1-43.1). For patients receiving multiple dilations, median time between procedures was 23.7 months. Four PFT parameters demonstrated significant improvement after intervention: (1) PEF (absolute change = 2.54 L/s), (2) PIF (absolute change = 1.57 L/s), (3) FEV1/PEF (absolute change = 0.44), and (4) FIF50% (absolute change = 1.71 L/s). PIF was the only parameter affected by using a larger balloon (P =.047). Conclusion: PEF, PIF, FEV1/PEF, and FIF50% improved significantly after endoscopic incision and dilation of iSGS, and this could potentially be used as a metric by which to evaluate outcomes in the endoscopic management of subglottic stenosis.
AB - Objective: This study aimed to examine the authors' experience with endoscopic management of idiopathic subglottic stenosis (iSGS), and to identify pulmonary function test (PFT) values that can be used to quantify outcomes. Methods: Retrospective review. Results: Twenty-five patients with a new diagnosis of iSGS were seen between 2006 and 2012. Median age at surgery was 45.3 years (interquartile range [IQR], 38.5-67.0), and median body mass index was 28.7 kg/m2 (IQR, 23.5-32.1). Forty-five procedures were performed. Median preoperative stenosis was 56.8% (Cotton-Myer grade 2). The typical stenosis began 15 mm below the true vocal folds and was 12 mm long. Median follow-up was 21.4 months (IQR, 5.1-43.1). For patients receiving multiple dilations, median time between procedures was 23.7 months. Four PFT parameters demonstrated significant improvement after intervention: (1) PEF (absolute change = 2.54 L/s), (2) PIF (absolute change = 1.57 L/s), (3) FEV1/PEF (absolute change = 0.44), and (4) FIF50% (absolute change = 1.71 L/s). PIF was the only parameter affected by using a larger balloon (P =.047). Conclusion: PEF, PIF, FEV1/PEF, and FIF50% improved significantly after endoscopic incision and dilation of iSGS, and this could potentially be used as a metric by which to evaluate outcomes in the endoscopic management of subglottic stenosis.
KW - endoscopic
KW - idiopathic subglottic stenosis
KW - pulmonary function test
UR - http://www.scopus.com/inward/record.url?scp=84925284000&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84925284000&partnerID=8YFLogxK
U2 - 10.1177/0003489414548915
DO - 10.1177/0003489414548915
M3 - Article
C2 - 25204711
AN - SCOPUS:84925284000
SN - 0003-4894
VL - 124
SP - 137
EP - 142
JO - Annals of Otology, Rhinology and Laryngology
JF - Annals of Otology, Rhinology and Laryngology
IS - 2
ER -