scholarly journals ABO blood type analysis in patients with chronic obstructive pulmonary disease

Genetika ◽  
2021 ◽  
Vol 53 (2) ◽  
pp. 457-471
Author(s):  
Blazenka Petricevic ◽  
Dragica Pesut
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Lung Function ◽  
General Population ◽  
Pulmonary Disease ◽  
Tobacco Smoking ◽  
Blood Type ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Blood Types ◽  
Abo Blood Type

Tobacco smoking is major risk factor for development of chronic obstructive pulmonary disease (COPD), which appears in 15-20% of smokers. Apart from smoking, exposure to polluted air and various noxae, and several genetic factors influence its development as well. The ABO blood type distribution varies among populations in the world, but also within subpopulations. A large number of studies have shown a correlation between blood types and the pathology of various diseases. These markers, used in population genetic research, have mainly shown deviations in the representation of blood groups in different diseases, compared to the general population. The aim of this study was to determine the ABO blood types distribution in patients with COPD compared to the general population, and their possible association with COPD stage, patients? nutritional status and lung function impairment. This observational, prospective study included 150 patients (68.7% men and 31.3% women), average age 64.80 ? 8.38 years, diagnosed with COPD. Data were collected at the Clinical Center of Montenegro in Podgorica and at the Special Hospital for Lung Diseases Brezovik in Niksic. Determination of blood types of the ABO system and Rh factors for all subjects was performed at the Blood Transfusion Center in Podgorica. Apart from patients? tobacco smoking status (duration of smoking and the number of cigarettes smoked per day expressed in pack/years for current smokers and former smokers), we also analyzed their exposure to various other noxae, their body mass index, and lung function in correlation to ABO blood type and Rh factor, and performed statistical analysis. We found a significant difference in the distribution of ABO blood types in patients with COPD compared to the general population. The highest frequency of blood type A was found in patients with COPD. We also found the lowest average values of spirometry parameters in that group, which represented majority of those patients with respiratory insufficiency having the most severe stage of the disease. Combined blood types A, B and were significantly more common in patients with COPD in comparison to blood type O, which is the least represented (23.3%). The least obstructive disturbance of pulmonary ventilation was found in the patients with B type. Respiratory insufficiency showed differences in gender representation, found in 40.4% of women, and in 25.2% of men with terminal phase of COPD. The prevalence of AB, higher than expected, decreases with the severity of the disease.

Screening of High-risk Patients for Chronic Obstructive Pulmonary Disease in Primary Care: A Narrative Review (Preprint)

2020 ◽  
Author(s):  
Ponrathi Athilingam ◽  
Andrew Bugajski ◽  
Usha Menon
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Lung Function ◽  
Pulmonary Disease ◽  
Current Knowledge ◽  
Screening Tools ◽  
Chronic Obstructive ◽  
Early Screening ◽  
Obstructive Pulmonary Disease ◽  
Impaired Lung Function ◽  
Risk Patients

UNSTRUCTURED Chronic obstructive pulmonary disease (COPD) predominantly affects older adults, and claimed 3 million lives in 2016, making it the third leading cause of death worldwide. Over 35 million Americans aged 40 or older have lung function consistent with diagnosable COPD. COPD and cardiovascular disease (CVD) have a bidirectional relationship, in that one is a risk factor for developing the other. National and international consortiums recommend early screening of adults at risk of COPD, such as those with CVD. Recommended screening strategies include screening tools to assess symptoms, medical history, and handheld spirometry. Handheld spirometry has high diagnostic accuracy and if impaired lung function is indicated, these patients are referred for pulmonary function testing (PFT), the diagnostic gold standard for COPD. However, there is no clinical consensus for pulmonary screening in people with CVD. Current knowledge relating to the prevalence and incidence of CVD in people with COPD and the mechanisms that underlie their coexistence is key in combating the global burden of COPD.

scholarly journals Mechanisms of gas exchange response to lung volume reduction surgery in severe emphysema

2011 ◽  
Vol 110 (4) ◽  
pp. 1036-1045 ◽  
Author(s):  
George Cremona ◽  
Joan A. Barbara ◽  
Teresa Melgosa ◽  
Lorenzo Appendini ◽  
Josep Roca ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chronic Obstructive Pulmonary Disease ◽  
Lung Function ◽  
Gas Exchange ◽  
Pulmonary Disease ◽  
Lung Volume ◽  
Chronic Obstructive ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Obstructive Pulmonary Disease

Lung volume reduction surgery (LVRS) improves lung function, respiratory symptoms, and exercise tolerance in selected patients with chronic obstructive pulmonary disease, who have heterogeneous emphysema. However, the reported effects of LVRS on gas exchange are variable, even when lung function is improved. To clarify how LVRS affects gas exchange in chronic obstructive pulmonary disease, 23 patients were studied before LVRS, 14 of whom were again studied afterwards. We performed measurements of lung mechanics, pulmonary hemodynamics, and ventilation-perfusion (V̇a/Q̇) inequality using the multiple inert-gas elimination technique. LVRS improved arterial Po2 (PaO2) by a mean of 6 Torr ( P = 0.04), with no significant effect on arterial Pco2 (PaCO2), but with great variability in both. Lung mechanical properties improved considerably more than did gas exchange. Post-LVRS PaO2 depended mostly on its pre-LVRS value, whereas improvement in PaO2 was explained mostly by improved V̇a/Q̇ inequality, with lesser contributions from both increased ventilation and higher mixed venous Po2. However, no index of lung mechanical properties correlated with PaO2. Conversely, post-LVRS PaCO2 bore no relationship to its pre-LVRS value, whereas changes in PaCO2 were tightly related ( r2 = 0.96) to variables, reflecting decrease in static lung hyperinflation (intrinsic positive end-expiratory pressure and residual volume/total lung capacity) and increase in airflow potential (tidal volume and maximal inspiratory pressure), but not to V̇a/Q̇ distribution changes. Individual gas exchange responses to LVRS vary greatly, but can be explained by changes in combinations of determining variables that are different for oxygen and carbon dioxide.

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