Improvement of upper airway obstruction after 131I-treatment of multinodular nontoxic goiter evaluated by flow volume loop curves

1996 ◽  
Vol 19 (2) ◽  
pp. 71-75 ◽  
Author(s):  
Birte Nygaard ◽  
U. Søes-Petersen ◽  
P. F. Høilund-Carlsen ◽  
A. Veje ◽  
P. E. Holst ◽  
...  
Keyword(s):  
Airway Obstruction ◽  
Upper Airway ◽  
Upper Airway Obstruction ◽  
Flow Volume ◽  
Nontoxic Goiter ◽  
131I Treatment ◽  
Flow Volume Loop

Effect of Body Posture on Flow-volume Loop and Upper Airway Obstruction Indices, Before and After Thyroid Surger

CHEST Journal ◽  
2003 ◽  
Vol 124 (4) ◽  
pp. 93S
Author(s):  
Marc Meysman ◽  
Jan Lamote ◽  
Bea Van Elewijck ◽  
Nancy Celis ◽  
Sonja Van Poyer ◽  
...  
Keyword(s):  
Airway Obstruction ◽  
Upper Airway ◽  
Body Posture ◽  
Upper Airway Obstruction ◽  
Flow Volume ◽  
Flow Volume Loop ◽  
Before And After

scholarly journals Upper airway obstruction caused by low-grade tracheal papillary adenocarcinoma: An unusual flow-volume loop pattern

1996 ◽  
Vol 111 (6) ◽  
pp. 1286-1288 ◽  
Author(s):  
David E. Clarke ◽  
Ronald J. Green ◽  
James B.D. Mark ◽  
Robert C. Robbins ◽  
Thomas A. Raffin
Keyword(s):  
Airway Obstruction ◽  
Upper Airway ◽  
Papillary Adenocarcinoma ◽  
Upper Airway Obstruction ◽  
Low Grade ◽  
Flow Volume ◽  
Flow Volume Loop ◽  
Loop Pattern

Evaluation of upper airway obstruction after partial laryngectomies by radiological method and flow–volume loop analysis

1994 ◽  
Vol 108 (11) ◽  
pp. 954-956 ◽  
Author(s):  
M. Misiolek ◽  
D. Ziora ◽  
K. Oklek ◽  
G. Namyslowski
Keyword(s):  
Airway Obstruction ◽  
Chronic Bronchitis ◽  
Upper Airway ◽  
Upper Airway Obstruction ◽  
Radiological Examination ◽  
Flow Volume ◽  
Loop Analysis ◽  
Upper Airways ◽  
Flow Volume Loop ◽  
Airway Obstructions

AbstractAnatomical and functional estimations of the upper airways in patients after partial laryngectomies (cordectomy, hemilaryngectomy, enlarged hemilaryngectomy) carried out due to cancer are discussed in this paper. The post-operative lumen of the larynx and the trachea were estimated by radiological examination. The coefficient larynx/trachea (L/T) was proposed to describe fixed obstruction.At the same time, all patients underwent spirometric examinations. Inspiratory and expiratory parameters of the flow-volume loop were evaluated. In 39 patients the L/T coefficient was lower than in a group of patients with chronic bronchitis (P<0.05). Also inspiratory and some expiratory parameters of the flow–volume loop decreased in contrast to the group with chronic bronchitis. All results showed the usefulness of radiological and spirometric methods in detecting upper airway obstructions and confirmed their fixed character. The influence of the area of operation on the degree of upper airway obstruction was emphasized.

scholarly journals Flow volume curve: A diagnostic tool in extrathoracic airway obstruction

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Thamir Al-Khlaiwi
Keyword(s):  
Airway Obstruction ◽  
Diagnostic Tool ◽  
Upper Airway ◽  
Lung Pathology ◽  
Flow Volume ◽  
Creative Commons ◽  
Flow Volume Loop ◽  
Volume Curve ◽  
Flow Volume Curve ◽  
Extrathoracic Airway

The flow-volume loop (F/V-loop) is a presentation of inhalation and exhalation of air stream volume during inspiration and expiration. It demonstrates the obstructive, restrictive and mixed pattern lung pathology. Flow-volume loop has been extensively used for evaluating the severity, progression and resolution of various causes of upper-airway conditions. doi: https://doi.org/10.12669/pjms.36.4.2283 How to cite this:Al-Khlaiwi T. Flow volume curve: A diagnostic tool in extrathoracic airway obstruction. Pak J Med Sci. 2020;36(4):---------.  doi: https://doi.org/10.12669/pjms.36.4.2283 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Inspiratory Flow Volume Loops and the Diagnosis of Upper Airway Obstruction

2008 ◽  
Vol 15 (5) ◽  
pp. 274-282 ◽  
Author(s):  
Carl R. Pavel ◽  
Michael J. Morris ◽  
Karin L. Nicholson ◽  
Jackie A. Hayes
Keyword(s):  
Airway Obstruction ◽  
Upper Airway ◽  
Inspiratory Flow ◽  
Upper Airway Obstruction ◽  
Flow Volume

scholarly journals Upper airway obstruction in patients with endothoracic goiter enlargement: no relationship between flow-volume loops and radiological tests

2010 ◽  
Vol 163 (4) ◽  
pp. 665-669 ◽  
Author(s):  
M Albareda ◽  
J Viguera ◽  
C Santiveri ◽  
P Lozano ◽  
A Mestrón ◽  
...  
Keyword(s):  
Airway Obstruction ◽  
Vital Capacity ◽  
Visual Analysis ◽  
Upper Airway ◽  
Forced Expiratory Volume ◽  
Upper Airway Obstruction ◽  
Flow Volume ◽  
Flow Parameters ◽  
Forced Expiratory Flow ◽  
Expiratory Flow

BackgroundIn about 16–85% of subjects with goiter, upper airway obstruction (UAO) is observed. This percentage is higher in patients affected by goiter with endothoracic enlargement. UAO is an indication for surgery. Visual analysis of flow-volume loops (FVL) are the best indicators for UAO, although various studies using clinical and radiological parameters have observed no correlation.ObjectiveTo evaluate the presence of UAO in patients with endothoracic goiter enlargement and the relationship between the FVL with the observed symptoms and the measurements obtained by computed tomography (CT).SubjectsSubjects with endothoracic goiter enlargement participated in the study.Designi) Symptom questionnaire (dysphagia, dyspnea, cough, oppression, dysphonia, and worsened symptoms when prone); ii) analysis: TSH and free thyroxine; iii) cervical ultrasound; iv) cervical-thoracic CT (measurements of area and diameter in the area of maximum stenosis and at 2 cm from the carina); v) chest radiography and vi) forced spirometry: visual analysis of FVL morphology and the maximum forced expiratory volume in 1 s (FEV1), forced expiratory flow at 50% vital capacity/forced inspiratory flow at 50% vital capacity and FEV1/peak expiratory flow parameters.ResultsFifty subjects participated in the study: 11 men/39 women, median age 73.8 years (43.76–88.43). UAO was diagnosed in 13 cases (26%, confidence interval: 14.6–40.3%) and 27 subjects (54%) presented symptoms suggesting goiter compression. No clinical or radiological variables showed the presence of UAO.ConclusionsThe frequency of UAO in subjects affected by goiter with endothoracic enlargement was lower than that described for goiter patients, and there were no clinical or radiological indicators to establish its presence.

Severe Upper Airway Obstruction Caused by Bullous Pemphigoid: Diagnostic Usefulness of the Flow-Volume Curve

1982 ◽  
Vol 90 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Carl Hallenborg ◽  
Lee D. Rowe ◽  
Cordon Gamsu ◽  
Homer A. Boushey ◽  
Jeffrey A. Golden
Keyword(s):  
Airway Obstruction ◽  
Bullous Pemphigoid ◽  
Upper Airway ◽  
Upper Airway Obstruction ◽  
Oxygen Mixture ◽  
Flow Volume ◽  
Axial Tomography ◽  
Volume Curve ◽  
Maximum Expiratory Flow ◽  
Flow Volume Curve

The site and severity of upper airway obstruction were accurately determined by analysis of the flow-volume curve obtained from a dyspneic patient with bullous pemphigoid. The limitation of maximum inspiratory flow to 0.5 L/s and of maximum expiratory flow to 0.7 L/s over most of the vital capacity suggested that the lumen of the extrathoracic trachea was narrowed to a diameter of 3 mm. The marked improvement in flow with the patient breathing a helium-oxygen mixture further confirmed that flow was limited in a large central airway. The predictions made from analysis of the flow-volume curve were confirmed by fiberoptic bronchoscopic examination and by computerized axial tomography, which revealed severe supraglottic obstruction. After a tracheostomy was performed, maximal inspiratory and expiratory flows were normal.

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