Die diagnostische Aussagekraft des exspiratorischen Flußvolumendiagramms

Overrath, G.; Konietzko, N.; Matthys, H

doi:10.1007/bf02095142

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…The reason lies in the high scatter in single val ues caused by lack of patient cooperation. The results in table 1 confirm that flow-vol ume values are more sensitive than those of FEV [21], The effort-dependent results seemed to show the least postoperative im provement. This is no contradiction to the fact that the effort-dependent parameters are decreased in extrathoracic airway ob struction [8,14,20].…”

Section: Discussionsupporting

confidence: 70%

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Effects of Surgery on Airway Mechanics in Tracheal Stenosis

Petro¹,

Konietzko²,

Maassen³

1982

Respiration

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12 patients suffering from severe extrathoracic tracheal stenosis mainly caused by long-term artificial ventilation were investigated by comparing their airway mechanics before and after tracheal sleeve resection and during long-term follow up. The investigations included body plethysmography, flow-volume relation, effect of bronchodilator, bronchial challenge and endoscopic estimation of the tracheal diameter. Tracheal sleeve resection in stenosis doubles the tracheal diameter from 5.9 to 11.0 mm. Resistance parameters and forced expiratory flow values reflected the significant improvement best. Airway structure remains stable during long-term follow-up, and effort-dependent parameters improve further. Compared to normal volunteers with artificially induced stenosis patients show a higher tolerability for airway narrowing. A tracheal diameter of 5 mm produces severe complaints and distinct functional distortions which are shown in specific airway resistance of 7.5 cm H₂O^-1•s, specific airway conductance of 0.02 cm H₂O•s^-1 and FEV₁ of 1 l•s^-1. These values are absolute indications for resection. Tracheal stenosis after long-term artificial respiration can be influenced slightly by bronchodilator therapy. Nonspecific bronchial hyperreactivity is present, suggesting increased reagibility of the bronchial smooth muscles.

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Section: Discussionsupporting

confidence: 70%

“…Similarly, the flow-volume curve is mostly egg-shaped [21] and the maximal inspiratory flow (V m .ix .in s p .) is reduced to the same extent as or more than the maximal expiratory flow (Vluax exp) [5].…”

mentioning

confidence: 99%

Effects of Surgery on Airway Mechanics in Tracheal Stenosis

Petro¹,

Konietzko²,

Maassen³

1982

Respiration

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“…The ref erence values were those of CECA [13] for lung vol umes and of Overrath et al [14] for flow-volume curves.…”

Section: Methodsmentioning

confidence: 99%

Laryngeal Cancer: Long-Term FolIow-Up of Respiratory Functions after Laryngectomy

Todisco¹,

Maurizi

Paludetti

et al. 1984

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Pulmonary function of 31 heavy smokers with laryngeal cancer was evaluated before and during the 1st year after total (n = 21) and conservative (n = 10) laryngectomy. 2 of them died because of recurrences, 1 for bronchopulmonary complications. Long-lasting hoarseness was the only presenting symptom in all patients. Preoperative lung function data and mucociliary clearance were consistent with a coexisting chronic obstructive lung disease in most subjects and was probably due to smoking. No differences were observed comparing pre- and postoperative data in the 10 conservative laryngectomy patients. On the contrary, the total-laryngectomy patients showed a progressive impairment of bronchial obstruction and bacteriological infection of the trachea during the 1st year after the operation. An impressive increase in mucociliary clearance rates has been observed 2 months after total laryngectomy during the postoperative hypersecretory phase. The obtained data allow us to hypothesize that when clinical conditions of laryngectomized patients in whom local or distant recurrences have been excluded deteriorate, this is related to a progressive bronchial obstruction at any level of the bronchial tree due to descending bacterial infection of the airways. To our knowledge this is the only work demonstrating that total laryngectomized patients need a complete pre- and postoperative evaluation of lung function, airway dynamics, mucociliary function and tracheal bacteriology for long-term prognosis and treatment.

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“…Sie sind einfach zu messen und zwar mitarbeitsabhängig, jedoch z.T. anstrengungsunabhängig (20). Von den mitarbeitsabhängigen Meßparametern zeigen sie die höchste Sensitivität zur Trennung zwischen positivem und negativem Test (6, 16).…”

Section: Introductionunclassified

Inhalative bronchiale Provokationstests bei Kindern: Vergleichende Messungen der Oszillations-, Verschlußdruck- und plethysmographischen Resistance

Klein¹,

Urbanek²,

Köhler³

et al. 1983

Klin Padiatr

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Examination of the lung function and bronchial provocation tests are useful for confirmation of an airway obstruction. There is a need for measurements independent of child cooperation. The standard method is body plethysmography. Forced oscillation method and interrupted occlusion method were recently introduced. Measurements of airway resistance by body plethysmography (Raw), by forced oscillation (Ros) and by interrupted occlusion method (Rvd) were compared during 78 inhalative bronchial provocation tests. The correlation index between Raw and Ros total was 0,84 and between Raw and Rvd 0,89. There is a good sensitivity and specifity in allergen bronchial provocation testing in all three methods. A bronchial sensitivity is confirmed in body plethysmography by 100% increase of Raw. In the interrupted method a 50% increase of Rvd in children smaller than 165 cm and in forced oscillation method a relative increase of 25% (0,15 kPa/l/s) is sufficient to assess a bronchial sensitivity to tested allergen.

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Die diagnostische Aussagekraft des exspiratorischen Flußvolumendiagramms

Cited by 5 publications

References 16 publications

Effects of Surgery on Airway Mechanics in Tracheal Stenosis

Effects of Surgery on Airway Mechanics in Tracheal Stenosis

Laryngeal Cancer: Long-Term FolIow-Up of Respiratory Functions after Laryngectomy

Inhalative bronchiale Provokationstests bei Kindern: Vergleichende Messungen der Oszillations-, Verschlußdruck- und plethysmographischen Resistance

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