PMID- 27606596 OWN - NLM STAT- MEDLINE DCOM- 20180910 LR - 20180910 IS - 1752-699X (Electronic) IS - 1752-6981 (Linking) VI - 12 IP - 2 DP - 2018 Feb TI - Study on small airway function in asthmatics with fractional exhaled nitric oxide and impulse oscillometry. PG - 483-490 LID - 10.1111/crj.12548 [doi] AB - OBJECTIVES: The invasive techniques can be direct and objective to assess small airway function, but they have significant risks and inconveniences for patients and cannot be repeated often. Some sophisticated techniques such as fractional exhaled nitric oxide (FeNO) and impulse oscillometry (IOS) may surmount such restrictions. Therefore, we investigated the relation among FeNO, IOS, and small airway function in asthmatic patients. METHODS: We recruited 140 asthmatic patients including 69 patients with small airway normal function and 71 patients with small airway dysfunction. FeNO, eosinophil(EOS)count and total immunoglobulin E (IgE) in peripheral blood, pulmonary function, as well as IOS were measured. RESULTS: The levels of FeNO, the reactance area (AX), the resonant frequency Fres and EOS were significantly increased in small airway dysfunction group compared with small airway normal function group (P < 0.01 respectively). A multiple regression model showed that FeNO, AX and Fres were correlative factors of mid forced expiratory flow of percentages of predicted values [FEF25-75 (%pred)] (P < 0.01, respectively). A receiver operating characteristic (ROC) analysis showed that the combination of FeNO, AX and Fres had a greater area under the ROC curve (AUC) than each of them (AUC: 0.881, P < .001, 95%CI: 0.815-0.929). CONCLUSION: FeNO and IOS are helpful in diagnosis of small airway dysfunction with high sensitivity and specificity, and FeNO combined with IOS can better evaluate the small airway function in asthmatic patients. CI - (c) 2016 John Wiley & Sons Ltd. FAU - Liu, Lin AU - Liu L AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Liu, Wen AU - Liu W AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. AD - Department of Cadre Health Care, The Second Hospital of Shandong University, Jinan, 250033, P.R. China. FAU - Liu, Chunhong AU - Liu C AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Wang, Dexiang AU - Wang D AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Zhao, Jiping AU - Zhao J AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Wang, Junfei AU - Wang J AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Wu, Jinxiang AU - Wu J AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Liu, Tian AU - Liu T AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Zhang, Yuanyuan AU - Zhang Y AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Liu, Yahui AU - Liu Y AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Cao, Liuzhao AU - Cao L AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. FAU - Dong, Liang AU - Dong L AD - Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012, P.R. China. LA - eng PT - Comparative Study PT - Journal Article DEP - 20160928 PL - England TA - Clin Respir J JT - The clinical respiratory journal JID - 101315570 RN - 0 (Biomarkers) RN - 31C4KY9ESH (Nitric Oxide) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adult MH - Airway Remodeling/*physiology MH - Asthma/blood/*diagnosis/physiopathology MH - Biomarkers/blood MH - China/epidemiology MH - Eosinophils/cytology MH - Exhalation/physiology MH - Female MH - Forced Expiratory Volume/physiology MH - Humans MH - Immunoglobulin E/blood MH - Lung/metabolism/physiopathology MH - Male MH - Middle Aged MH - Nitric Oxide/*analysis MH - Oscillometry/*instrumentation MH - Predictive Value of Tests MH - Respiratory Function Tests/methods OTO - NOTNLM OT - asthma OT - fractional exhaled nitric oxide OT - impulse oscillometry OT - small airway dysfunction EDAT- 2016/09/09 06:00 MHDA- 2018/09/11 06:00 CRDT- 2016/09/09 06:00 PHST- 2016/02/03 00:00 [received] PHST- 2016/07/08 00:00 [revised] PHST- 2016/08/30 00:00 [accepted] PHST- 2016/09/09 06:00 [pubmed] PHST- 2018/09/11 06:00 [medline] PHST- 2016/09/09 06:00 [entrez] AID - 10.1111/crj.12548 [doi] PST - ppublish SO - Clin Respir J. 2018 Feb;12(2):483-490. doi: 10.1111/crj.12548. Epub 2016 Sep 28.