關於 fef 25-75 ，我們在網路上蒐集到這些相關的討論、資訊與評價

#11. CORRELATION OF FORCED EXPIRATORY FLOW (FEF) 25 ...

CONCLUSIONS: FEF25-75 may be use for early detection of small airway obstruction. This may help encourage smokers to quit earlier before significant airway ...

#12. Spirometry - Wikipedia

Spirometry is the most common of the pulmonary function tests (PFTs). ... 2.0, and 3.0 seconds, forced expiratory flow 25–75% (FEF 25–75) and maximal ...

#13. Spirometry Overview - World Allergy Organization

/FVC: ratio expressed as a percentage (low values c/w obstructive lung disease). • FEF. 25-75. : The average forced expiratory flow during the mid (25.

#14. FEF 25-75% Values in Patients with Normal Lung Function ...

We aimed to assess whether FEF25-75% can be an early predictor of chronic obstructive pulmonary disease (COPD). Patients and Methods. Between ...

#15. 生理學-常見呼吸功能檢查項目整理 - 高點醫護網

若平均值明顯降低，表是氣道阻塞，常用於氣喘患者的監測。 三、肺通氣障礙判斷指標. 通氣障礙類型, TV, VC, RV, TLC, MVV, FEV1, FEF ...

#16. Oncology Meeting

FEV 1. Vol. Extrap. End of Test. Exp Time ... 提早停止呼氣 FVC↓ FEF25-75% ↑ ... small airway的直徑可能因lung volume loss而變小,造成FEF25-75%下降.

#17. Measurement of FEF25–75% and FEF75% does not ...

... at 25–75% of forced vital capacity (FVC) (FEF25–75%) and flow when 75% of ... FEF25-75% should not yet be used to define a bronchodilator response in ...

#18. PULMONARY FUNCTION TEST

Calculations. ❑ Forced vital capacity (FVC). ❑ FEV1. ❑ FEV1/FVC ratio. ❑ FEF 25-75% (maximal mid-expiratory flow rate). ❑ PEF (peak expiratory flow ) ...

#19. Clinical significance of low forced expiratory flow between 25 ...

Distal airflow obstruction (DAO) was defined by an FEF25–75% <65% and a ratio forced expiratory volume during the first second (FEV1)/forced vital capacity (FVC) ...

#20. Correlation between Reduced FEF25-75% and a Positive ...

FEF25-75% is routinely reported on spirometry and is thought to be a marker of small airway obstruction. It is reduced in children with asthma, but its ...

#21. Medline ® Abstract for Reference 40 of 'Respiratory ...

Responders (PC(20),<8 mg/mL) had significantly lower values for forced expiratory flow between 25% and 75% of the outflow curve (FEF(25-75)), FEF(25-75) ...

#22. FEF 25-75% Values in Patients with Normal Lung ... - YUHSpace

Purpose: The forced mid-expiratory flow (FEF25-75%) value is a potentially sensitive marker of obstructive peripheral airflow. We aimed to assess whether FEF25- ...

#23. Spirometry in the asthmatic child: Is FEF 25–75 a more ...

This study evaluated the forced expiratory flow between 25% and 75% of vital capacity (FEF25–27), forced expired volume in 1 second (FEV1 ), and the ratio ...

#24. File:Normal values for FVC, FEV1 and FEF 25-75.png

English: Normal values for Forced Vital Capacity (FVC), Forced Expiratory Volume in 1 Second (FEV1) and Forced Expiratory Flow 25–75% (FEF25–75%).

#25. 肺功能量計的判讀

肺功能量計(spirometry) 對於肺部疾. 病是一有用且常用的檢查工具，除了可. 以用來偵測肺部功能的異常，也可以追. 蹤疾病的嚴重程度與進展。隨著科技的.

#26. Alternative functional criteria to assess airflow-limitation ...

Measurements evaluated were FEV1, FVC, maximum mid-forced expiratory flow (FEF25–75%), residual volume (RV), inspiratory capacity (IC), airway resistance (Raw) ...

#27. Clinical Implications of Having Reduced Mid Forced ... - PLOS

Clinical Implications of Having Reduced Mid Forced Expiratory Flow Rates (FEF25-75), Independently of FEV1, in Adult Patients with Asthma. Craig ...

#28. View of Pulmonary Function Testing

Changes in FEF 25%–75% reflect changes in small airways; its reduction is associated with small airway dysfunction. However, the FEF 25%–75% is a highly ...

#29. Association of FEF25-75% Impairment with Bronchial ...

Forced expiratory flow at 25 and 75% of the pulmonary volume (FEF25-75%) is defined as the mean forced expiratory flow during the middle half of ...

#30. Role of Methacholine PC20 in FEF25-75% for the Diagnosis ...

tory Flow 25-75% (FEF25-75%)' is a more sensitive in- dicator for the obstruction of small airways than FEV1, but has lower reproducibility than FEV1.

#31. Study of effect of smoking on Forced expiratory flow during 25

The mean value of FEF 25-75% POST in group 1 (0-10pack years) is 3.197+1.153, Group 2 (11-20 pack years) is 2.397+1.162, and.

#32. LOINC 69972-8 FEF 25-75% --pre bronchodilation

FEF 25-75 % --pre bronchodilation. Active. Part Description. LP145616-1 Gas flow at 25-75% of forced expiration FEFx: Forced expiratory flow related to some ...

#33. Forced Expiratory Flow (FEF 25–75% ) as a Clinical Endpoint ...

Forced expiratory flow at 25–75% of the vital capacity (FEF25–75%) is a potentially more sensitive parameter for assessing peripheral airway ...

#34. Familial aggregation of FEF(25-75) and FEF(25-75)/FVC in ...

CONCLUSION:Lower values of FEF(25-75) and FEF(25-75)/FVC in non-smoking first degree relatives of early onset COPD probands than in controls suggest a genetic ...

#35. FEF 25-75% Values in Patients with Normal ... - ScienceOpen

We aimed to assess whether FEF 25-75% can be an early predictor of chronic obstructive pulmonary disease (COPD). Patients and Methods. Between ...

#36. A forced expiratory flow at 25-75% value <65 ... - Read by QxMD

However, it has been proposed that forced expiratory flow at 25-75% (FEF(25-75)) could be more sensitive than FEV1 to detect slight airways obstruction.

#37. Forced expiratory flow between 25% and 75% of vital capacity ...

Conclusion. FEF25-75 percent predicted was well correlated with bronchodilator responsiveness in asthmatic children with normal FEV1. FEF25- ...

#38. Pulmonary Function Tests

75% (FEF. 25-75. ) • Mean forced expiratory flow during middle half of FVC du g dde a o. C. • May reflect effort independent.

#39. Forced Mid-Expiratory Flow Can Predict Ventilatory Limitation ...

FEF 25-75 % performed more accurately on initial testing and was ultimately the chosen variable. The area under the ROC curve was calculated to ...

#40. A forced expiratory flow at 25-75% value <65% of ... - ProQuest

Therefore, the aim of the present study was to confirm an FEF(25-75) cutoff value in a large cohort of asthmatic children. Seven hundred allergic children (493 ...

#41. FEF25-75 在预测气道对甘露醇高反应性中的有用性 ... - X-mol

(FEF 25–75 %pred)预测值百分比与1 秒用力呼气量(FEV 1 %pred)、FEV 1 /用力的曲线下面积(AUC)肺活量(FVC) 和FEF 25–75 / FVC 用于预测AHR。 结果：甘露醇 ...

#42. can fef 25-75% be used as a valid alternative to fev1% in copd ...

detecting lung disease, at an early stage has led to widespread measurement of FEF 25-75%. This study will provide an.

#43. Spirometry parameters used to define small airways ...

FEF (25–75%) values in patients with normal lung function can predict the development of chronic obstructive pulmonary disease. Int J Chron ...

#44. Role of forced expiratory flow at 25–75% as an early marker...

Small airway disease (SAD), defined by a reduction in forced expiratory flow at 25–75% of the pulmonary volume (FEF 25–75) and normal spirometry (normal ...

#45. The Bronchodilator Response in FEF 25-75% Compared to ...

BDR was assessed 20 min after the administration of 2.5 mg of salbutamol using a jet nebulizer. Changes in FEV1 and FEF25-75 were assessed. The ...

#46. Does BMI Modify the Association between Vitamin D ... - MDPI

Flow at 25–75% (FEF 25–75%) > 65% including a z-score cut-off of −1.64 for symptomatic patients, represent normal lung function.

#47. Could FEF 25–75 levels or blood eosinophil counts predict the ...

to investigate the relationship between FEF 25-75 values and blood eosinophilia levels and BHR in patients with asthma symptoms.

#48. WS07.3 FEF 25–75 does not contribute to the interpretation of ...

To explore the value of assessing the FEF25–75, a measure of “small airway disease” in addition to the FEV1, FVC and FEV1/FVC in patients with cystic ...

#49. Supplementary appendix - The Lancet

FEF 25-75 % ... reserve volume; FEF. 25-75%, forced expiratory flow at 25 to 75% of FVC; FEV1, forced expiratory volume in one second; FEV6,.

#50. FEF25-75%和FEF75%的测定对|欧洲呼吸学会的临床决策没有 ...

分别计算FEV预测值和正常的下限，其定义为第5百分，1，FVC，FEV1/ FVC比，FEF25-75％和FEF75%使用来自全球肺功能倡议预测方程。 对测试结果进行分类时，几乎没有不一致的 ...

#51. AAIR :: Allergy, Asthma & Immunology Research

At asthma onset, reduced baseline FEF25-75 values with normal FEV1 and FEV1/FVC may predict AHR. Detectable predictive cut-off values do not ...

#52. Evaluation of long-term lung capacity using spirometry in ...

and FEF 25–75 values. The effect of bronchoscopy procedure on the same values, the difference between. FEV1 and FVC values was statistically ...

#53. Forced Expiratory Flow (FEF 25–75% ) as a Clinical Endpoint ...

Forced Expiratory Flow (FEF25–75%) as a Clinical Endpoint in Children and Adolescents with Symptomatic Asthma Receiving Tiotropium: A Post Hoc Analysis.

#54. NHANES 2011-2012: Spirometry - gov.cdc.wwwn

Variable Name: SPXNF257; SAS Label: Baseline FEF 25-75% (mL/s); English Text: Baseline 1st Test Spirometry, Forced Expiratory Flow Rate 25-75%, in mL/s.

#55. An Approach to Interpreting Spirometry - AAFP

FEV1/ FVC ratio—The percentage of the FVC expired in one second. FEV6 —Forced expiratory volume in six seconds. FEF25–75%—Forced expiratory flow ...

#56. Decline in 25% to 75% forced expiratory flow as an early ...

This decline in FEF25–75 was also highly sensitive and specific for the diagnosis of BOS. KEY WORDS. bronchiolitis obliterans syndrome · forced ...

#57. Effect of Smoking on FEF 25, FEF 50 & FEF 75 in Adult Male ...

Its objective is to assess the change of FEF 25, FEF 50 and FEF 75 (L/sec) in ... forced expiratory flow 25-75% values of smokers and non.

#58. Ratio between forced expiratory flow between 25% and 75 ...

A low FEF(25-75)/FVC ratio, indicating small airway size relative to lung size, is associated with higher airway sensitivity and reactivity ...

#59. 75% values (FEF25-75) in the control of asthma according

no study on FEF value of 25-75% in asthma control, so we conducted this study with the aim of assessing the value of FEF25% -75% in controlling asthma. of.

#60. Forced Expiratory Flow at 25%-75% Links COPD Physiology ...

We used baseline data from 2771 ever-smokers from the SPIROMICS cohort to identify associations between percent predicted FEF (%predFEF) and ...

#61. Evaluation of spirometry in asthmatic children

FVC, FEV1/FVC, FEF 25-75 and PEFR in different age groups. Methods: The present study was conducted among 60 patients of age group 6 to 12 ...

#62. SPIROMETRY A spirometer is a vital tool in the measurement ...

information are the FVC, FEV1, FEV1/FVC ratio, and FEF 25-75 percentages. The data is given in actual measurement of volumes in liters, but one should just ...

#63. The FEF 25-75 and its decline as a predictor of methacholine ...

The FEF 25-75 and its decline as a predictor of methacholine responsiveness ... such as the forced expiratory flow rate 25-75% (FEF25 -75).

#64. Asthma, FEF25–75, and Hospitalizations in Children

Reduced forced expiratory flow between 25%–75% of forced vital capacity (FEF25–75) may be an important measure of asthma severity and control in ...

#65. PEFR and FEF_25-75 in Rheumatoid Arthritic ...

Background: Rheumatoid Arthritis (RA) is a chronic, progressive multisystemic inflammatory disorder of unknown etiology affecting approximately 1% of the ...

#66. Small-airway disease and its reversibility in human ...

CONCLUSIONS: Abnormal FEF25-75 as a marker of SAD and FEV1 with a positive BDR are common in HIV-infected children. These lung function abnormalities justify ...

#67. Spirometry Calculator | Doctor - Patient.info

FEF 25-75 %, Forced expiratory flow between 25-75%, Average expiratory flow rate at the middle part of forced expiration. It is a more sensitive indication ...

#68. Effect of gastroesophageal reflux disease on spirometry, lung ...

25–75, and maximum mid-expiratory flow/peak expiratory ... DLCO, diffusing capacity of the lung for carbon monoxide; FEF 25–75%, forced expiratory flow ...

#69. Calculate Spirometric Reference Values

FVC (L). FEV1 (L). PEF (L/s). FEF25-75 (L/s). FEV6 (L). Observed. Predicted. % Predicted. Z-score. Percentile. LLN. FVC. FEV1. FEV1 /FVC. PEF. FEF25-75.

#70. Body mass index of patients with chronic obstructive ...

FEF 25 is an indicator to reflect the flow of the early stage of expiration and will decline if large airway is obstructive. FEF50 and FFE75 ...

#71. 氧合功能之評估

用力呼氣流速(forced expiratory flow rate, FEF) ... 或稱FEF. 25%-75%. ) ▫ 是只將FRC分為四等分時，中間2等分的流速，為呼吸道阻塞的重 ... 25-75%. 7.7 L/sec ...

#72. Effect of Moderate Exercise on Ventilatory Functions of ...

FVC ( Forced Vital Capacity), FEF 25-75% (Forced Expiratory Flow - 25-75%),. PEFR( Peak Expiratory Flow Rate) were recorded before and after exercise.

#73. Comparative study of forced expiratory flow and peak ...

Cause of reduced FEF(25–75%) is lower airway caliber and higher airway resistance. It denotes the reduced force-generating capacity of expiratory muscles and ...

#74. Indian Journal of Medical and Paediatric Oncology / Full Text

An Efficient Diagnosis of Diffuse Parenchymal Lung Disease from Spirometry Exploring the Novel Role of FEF25–75. Debkanya Dey.

#75. Functional parameters of small airways can guide ... - Nature

IPF patients with SAD, determined by IOS parameters, showed significant improvement in FEV1, FEF25–75%, and symptom scores after bronchodilator ...

#76. Role of FEF25–75 as an Early Marker of Bronchial Impairment ...

Allergic rhinitis may be associated with asthma. Forced expiratory flow between 25 and 75% of vital capacity (FEF25–75) is a measure of small airways ...

#77. Core Pulmonary Concepts

Peak expiratory flow rate (PEFR):; Maximum flow rate during a FVC maneuver; varies with sex, age, height, etc. FEF25-75% : forced expiratory ...

#78. Clinical implications of having reduced mid forced expiratory ...

In a sensitivity analysis, we also compared outcomes across participants with FEF25-75% below the lower limit of normal (LLN) and FEV1/FVC above LLN. Results: ...

#79. FEF25–75% as a spirometric variable in pulmonary function ...

Conclusion: A decrease in FEF 25–75% of ≥ of 40%, in the absence of other non-infectious pulmonary complications, was highly suggestive in allogeneic HSCT ...

#80. FEF 25-75 : A marker for small airways and asthma control

However, we would like to highlight some noteworthy issues about the clinical relevance of FEF25-75 in patients with respiratory allergy.

#81. Study on the Normal Predicted Standards of Spirometry for ...

5078 FEF 25-75%: 0.0268H-0.0426A+ 1. ... 0314A - 4.1950 Female; FVC: 0.0431H-0.0163A-2.8229 FEV 1: 0. 0323H - 0. ... 7450 FEF 200-1,200: 0.0510H-0.0338A- 1.

#82. Clinical Indications - Asthma Initiative of Michigan

Spirometry. FVC (L). 2.86 2.54. 113. FEV1 (L). 2.00 2.27. 88. FEV1/FVC (%). 70. 89. FEF 25 - 75% (L/sec) 1.43. 2.51. 57. FEF Max (L/sec).

#83. The Outcome of an Emergency Respiratory Admission ...

FEF25–75 values linearly and inversely predicted 30-day hospital mortality outcomes - OR 0.88 (95% CI: 0.85, 0.91); consecutive deciles (falling ...

#84. CLINICAL - Royal College of Physicians of Edinburgh

between R5 (total airway resistance) with FEV1, FVC and Forced Expiratory Fraction (FEF) between 25–75% of FVC (FEF 25–75). Also R5–R20 (peripheral airway.

#85. Is it time to scuttle the FEF25%-75%? | PFTBlog - PFT Forum

Would my FEV1 be higher Post Bronchdilator if my FEF 25/75 was up by that much (28%). I'm thinking that there must be some significance in ...

#86. Faal Paru Dinamis | Jurnal Respirasi - Journal Unair

Significant parameters are FEV 1 / FVC, PEFR, and FEF 25-75. The FEV1 / FVC ratio is important because the accuracy level for obstruction in the ...

#87. modeling pulmonary function growth with regression splines

In this paper we analyze 28,473 FEF 25-75 observations on 5,030 Caucasian boys between the ages of 10 and 18 for whom information on height, asthma.

#88. Post-Exercise Pulmonary Function Changes in Asthmatic ...

Exercise- induced reduction in PEFR were less marked and less frequent than decreases in FEV1 and FEF 25 -75%, and reductions in FVC were the least severe ...

#89. Pulmonary Function Test in Patients with Diabetes Mellitus

... during 25–75% of FVC (FEF25–75), forced expiratory flow during 0.2–1.2 litres of FVC (FEF0.2–1.2), and peak expiratory flow rate (PEFR).

#90. PEFR AND FEF 25-75 PERCENTAGE IN TYPE-2 DIABETES ...

Based on the duration of disease, diabetic patients were divided into A (5-10 years) and B (10-20 years). PEFR and FEF 25-75 of all the subjects were measured ...

#91. Spirometry and Interpretation of Spirometry

FEF 25-75 (“midlflow”): average airflow middle of FVC maneuver. • Flow-volume loop: flow of exhaled air plotted against volume ...

#92. expiratory flow fef25-75: Topics by Science.gov

At EFLTV onset, tidal peak expiratory flow and FEF25-75% values were 1.44 ± 0.23 L/s and FEV1 was 62 ± 10% predicted. Within the following 2 years, FEV1 dropped ...

#93. Understanding Spirometry - Normal, Obstructive vs Restrictive

Where do I get my information from:http://armandoh.org/resourceHIT THE LIKE BUTTON!

#94. Does unified allergic airway disease impact on lung function ...

FEV1 % predicted and FEF25-75 % predicted were also significantly lower in patients with concomitant allergic rhinitis.

#95. Physical Activity Improves Some Asthma Outcomes in Children

... forced expiratory flow between 25% and 75% of FVC (FEF25-75), and quality of life in asthmatic children; however, there was not evidence ...

#96. Spirometry: FEF 25-75% may predict reversible ... - Allergy Notes

Spirometry: FEF 25-75% may predict reversible airflow obstruction in children ... This new study challenges the assumption that the assessment of ...

#97. Amiodarone-Induced Lung Toxicity: A Case Initially Not ...

FEF25-75 %, 242% predicted. TLC%, 56% predicted. PEF%, 78% predicted. ESR, 120 mm/h. CRP, 13.9 mg/L. LDH, 683 mU/mL.

#98. FEF50、FEF75、MMEF75/25是什么意思 - 百度知道

FEF 是用力呼气流量forced expiratory flow分别取50%,75%肺活量的呼气流速。说明你呼吸功能减弱。 度量标准：. 通常以它所占用用力肺活量的百分比表示 ...

#99. The accuracy of FEF25-75/ FVC for primary classification of ...

Introduction: The forced expiratory flow at 25 and 75% of the pulmonary volume/forced vital capacity ratio (FEF25-75/FVC) as a spirometry parameter has been ...