scholarly journals Simultaneous Assessment of Airway Instability and Respiratory Dynamics with Low-Dose 4D-CT in Chronic Obstructive Pulmonary Disease: A Technical Note

Respiration ◽  
2014 ◽  
Vol 87 (4) ◽  
pp. 294-300 ◽  
Author(s):  
Mark O. Wielpütz ◽  
Ralf Eberhardt ◽  
Michael Puderbach ◽  
Oliver Weinheimer ◽  
Hans-Ulrich Kauczor ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Low Dose ◽  
Technical Note ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
4D Ct ◽  
Respiratory Dynamics ◽  
Simultaneous Assessment

The Effects of Oral Almitrine on Pattern of Breathing and Gas Exchange in Patients with Chronic Obstructive Pulmonary Disease

1984 ◽  
Vol 66 (4) ◽  
pp. 435-442 ◽  
Author(s):  
J. R. Stradling ◽  
C. G. Nicholl ◽  
D. Cover ◽  
E. E. Davies ◽  
J. M. B. Hughes ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Gas Exchange ◽  
Pulmonary Disease ◽  
Low Dose ◽  
Statistical Significance ◽  
Chronic Obstructive ◽  
Inspiratory Flow Rate ◽  
Obstructive Pulmonary Disease ◽  
Oxygen Breathing ◽  
Arterial Po2

1. Almitrine at a low dose of 100 mg orally significantly raises Pao2 and lowers Paco2 in patients with chronic obstructive pulmonary disease, compared with placebo, when they were breathing air or 28% oxygen. 2. The estimated ideal alveolar — arterial Po2 difference was less after almitrine compared with placebo, when patients were breathing either air or 28% oxygen. 3. After almitrine overall ventilation breathing air increased by 10% but this did not reach statistical significance. During 28% oxygen breathing almitrine hardly altered overall ventilation but the inspiratory duty cycle (Ti/Ttot.) decreased and mean inspiratory flow rate (VT/Ti) increased compared with placebo. These changes were significant on a paired t-test (P<0.05). 4. Changes in both volume and pattern of breathing may explain the improved gas exchange in the lung after almitrine.

scholarly journals Frequency of acute exacerbation of chronic obstructive pulmonary disease in patients taking low dose azithromycin prophylaxis.

2020 ◽  
Vol 27 (11) ◽  
pp. 2438-2444
Author(s):  
Muhammad Absar Alam ◽  
Muhammad Sarfraz ◽  
Arsalan Hafeez ◽  
Zafar Ali Zafar ◽  
Touseef Anwar ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Acute Exacerbation ◽  
Low Dose ◽  
Operational Definition ◽  
University Hospital ◽  
Chronic Obstructive ◽  
Cross Sectional ◽  
Obstructive Pulmonary Disease ◽  
Duration Of Disease

Objectives: To assess the frequency of acute exacerbation of chronic obstructive pulmonary disease in patients taking low dose azithromycin prophylaxis. Study Design: Cross Sectional study. Setting: Department of Medicine, Independent University Hospital, Faisalabad. Period: 01-07-2017 to 30-06-2018. Material & Methods: 100 patients having diagnosis of COPD according to the operational definition were selected from medical opd of hospital after consent of patients. All patients were given tablet azithromycin 250mg thrice weekly for 12 months, then these patients were followed up for episodes of exacerbations in one year. All patients were properly instructed to report in any change in their symptoms. Any episode of acute exacerbation was noted. There was no conflict of interest. Results: Frequency of acute exacerbation of chronic obstructive pulmonary disease was seen in 70 out of 100(70%) patients taking low dose azithromycin prophylaxis. In female patients frequency of acute exacerbation was high as compared to male patients. i.e. 62.9% vs. 37.1%. Frequency of acute exacerbation was higher in patients whose duration of disease was longer. i.e. 7-10 years followed by patients whose duration of disease was 4-6 years (28.6%) and 1-3 years (25.7%). Presence of acute exacerbation was significantly associated with decline in lung functions. Highest frequency of acute exacerbation was seen in patients who had 3-4 episodes. Conclusion: Results of this study showed a high frequency of acute exacerbation of COPD even with the prophylaxis of low dose azithromycin. However literature reported effectiveness of low dose azithromycin for acute exacerbation in patients of COPD. So further study in the form of randomized trail is needed to prove the efficacy of azithromycin.

scholarly journals OPPORTUNITIES OF LOW-DOSE DIGITAL FLUOROGRAPHY IN DIAGNOSIS OF PHENOTYPIC VARIANTS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE

2018 ◽  
Vol 99 (4) ◽  
pp. 191-196
Author(s):  
N. A. Gorbunov ◽  
A. P. Dergilev ◽  
V. I. Kochura ◽  
Ya. L. Manakova ◽  
S. N. Volchenko ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Differential Diagnosis ◽  
Pulmonary Disease ◽  
Optical Density ◽  
Low Dose ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
X Ray ◽  
Average Value ◽  
Lung Emphysema

Objective. To determine the opportunities of low-dose digital fluorography (LDDF) in differential diagnosis of phenotypic variants of chronic obstructive pulmonary disease (COPD).Material and methods. There were 107 patients with clinically diagnosed COPD of varying severity examined. The average age of the patients was 51.8±1.5 years (46–59 years). All patients for LDDF of the chest in the frontal projection in the inspiratory and expiratory phase of respiration were undergone.Results. The electron optical density of the lungs was determined in the upper, middle and lower zones of both lungs. As a result in patients with a predominance of emphysematous variant of COPD (n=15) the most characteristic radiological symptom was lung hyperventilation (14% of 107 patients) and inspiratory electron optical density value was 748.18±4.72 optical density units (ODU). In patients with a predominance of bronchitic variant of COPD (n=43) the most common radiological symptom was the presence of symptom amplification and deformation of lung pattern (40% of 107 patients) and inspiratory electron optical density value was 668.04±12.26 ODU. For patients with mixed phenotypic variant of COPD (n=49) it was characterized by a combination of X-ray symptom amplification and deformation of lung pattern with lung emphysema (46% of 107 patients); the average value of inspiratory electron optical density value was 815.24±17.25 ODU.Conclusion. The technique of LDDF can detect X-ray symptoms and determine inspiratory and expiratory electron optical density of the lungs in patients with COPD that allows optimizing the differential diagnosis of phenotypic variants of chronic obstructive pulmonary disease.

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