Lung Function in the Morbid Obese After Bariatric Surgery

Lung Function in the Morbid Obese After Bariatric Surgery

October 2010, Vol 138, No. 4_MeetingAbstracts Poster Presentations: Wednesday, November 3, 2010 | October 2010 Lung Function in the Morbid Obese Aft...

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October 2010, Vol 138, No. 4_MeetingAbstracts

Poster Presentations: Wednesday, November 3, 2010 | October 2010

Lung Function in the Morbid Obese After Bariatric Surgery Vanessa R. Resqueti, PhD; Cledna Barreto, PT; Valeska F. Sousa, PT; Guilherme A. de Freitas Fregonezi, PhD; Selma S. Bruno, PhD Universidade Federal do Rio Grande do Norte, Natal, Brazil Chest. 2010;138(4_MeetingAbstracts):571A. doi:10.1378/chest.10920

Abstract PURPOSE: Obesity has effects on lung function that can reduce respiratory well-being. The aim of this study is to assess the anthropometric parameters, spirometry and static (MIP-maximum inspiratory pressure and MEP- maximum expiratory pressure) and dynamic respiratory strength (MVV- maximum voluntary ventilation) in morbid obese after long term of bariatric surgery. METHODS: We evaluated anthropometric parameters (waist circumference (WC), hip circumference (HC), waist-hip ration (WHR), neck circumference (NC)) and pulmonary function tests (spirometry and respiratory muscle strength) in 30 patients (24 female), 38±9 years, without respiratory or heart diseases, before and after gastric bypass, Roux- en-Y-surgery. RESULTS: After the surgery, we observed a decreasing in the anthropometric values: BMI 48.5±5.3 vs 33.9±3.8 kg/m2 (p< 0.0001), WC 135±13 vs 102±11cm (p< 0.0001), HC 142±12 vs 115±9 cm (p< 0.0001), WHR 0.95±0.07 vs 0.88±0.06 (p=0.0001), and NC 43.6±4.8 vs 36.9±2.6 cm (p< 0.0001). Significative improvement in the spirometric values of FEV1 3±0.7 vs 3.42±0.86 l (p=0.05), MVV 99.9±17 vs 134.4±24 l/min (p< 0.0001), FEF25-75% 3.5±0,6 vs 3.8±0.8 l/s (p=0.01) and ERV 0.43±0.3 to 0.66±0.3 l (p=0.003). There were no changes in the values of static muscle strength MIP 88.4±30.6 vs 93.8±31.8 cmH2O and MEP 95.2±22.9 vs 93.2±28.6 cmH2O (p= 0.23 and p= 0.78 respectively). CONCLUSION: Changes in anthropometric parameters appear to be related with improvements in respiratory endurance and middle airways flow. CLINICAL IMPLICATIONS: Respiratory obesity complications can impair lung function and are long term correlate with restrictive lung disease. Gastric bypass Roux-en-Y-surgery is related to anthropometric parameters decrease and are associate with improvements in respiratory muscle endurance and middle airways flow. DISCLOSURE: Selma Bruno, No Financial Disclosure Information; No Product/Research Disclosure Information 12:45 PM - 2:00 PM