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Pulmonary function tests and impulse oscillometry in severe chronic obstructive pulmonary disease patients' offspring
Babak Amra1, Victoria Beigi Borougeni2, Mohammad Golshan1
1Bamdad Respiratory and Sleep Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Insights
Offspring of severe chronic obstructive pulmonary disease (COPD) patients exhibit increased airway resistance. Impulse oscillometry (IO) may detect high-risk individuals in families with COPD.
Area of Science:
- Pulmonary Medicine
- Respiratory Physiology
Background:
- First-degree relatives of individuals with COPD often show increased airflow obstruction.
- Limited research exists on airway resistance in offspring of severe COPD patients.
Purpose of the Study:
- To evaluate airway resistance in offspring of severe COPD patients using spirometry and impulse oscillometry (IO).
- To compare pulmonary function between offspring of severe COPD patients and a control group.
Main Methods:
- A case-control study involving 54 offspring of severe COPD patients and a control group.
- Pulmonary function tests and IO were performed on both groups.
- Statistical analysis using Student's t-test with significance set at P < 0.05.
Main Results:
- Offspring of severe COPD patients showed significantly increased airway resistance (R5 Hz, P = 0.01; R25 Hz, P < 0.001).
- The case group exhibited lower spirometry parameters (FVC, FEV1, FEF 25-75, FEF 25-75/FVC) than controls, though within normal ranges.
Conclusions:
- Increased airway resistance is evident in offspring of severe COPD patients.
- Impulse oscillometry (IO) shows promise as a sensitive tool for identifying high-risk individuals within COPD families.
Background:
Several studies have showed an increased prevalence of airflow obstruction in first degree relatives of individuals with chronic obstructive pulmonary disease (COPD). Considering no specific research had evaluated airway resistance in offspring of patients with severe COPD, we utilized a spirometry and a impulse oscillometry (IO) to evaluate this population.
Materials And Methods:
In this case control study, from November 2011 to July 2012, we consecutively evaluated 54 offsprings of severe COPD patients (case group) admitted in the pulmonary ward, affiliated to the Isfahan University of Medical Sciences and control group. Pulmonary function tests and the IO were obtained for both groups. Student's t-test was used for inter-group comparisons, and P values below 0.05 were taken as significant.
Results:
Abnormal increased airway resistance was seen in cases in comparison with controls (R5 Hz [46.29%, P = 0.01], R25 Hz [42.59%, P < 0.001]). Also, considering the spirometry, case group had pulmonary function parameters less than control group (forced vital capacity [FVC]; P = 0.02, forced expiratory volume in 1(st) s; P < 0.001, forced expiratory flow (FEF) 25-75; P < 0.001, FEF 25-75/FVC; P < 0.001) but they were in normal range.
Conclusion:
This study demonstrated increased airway resistance among the severe COPD offsprings. The IO may be a sensitive tool for detection of high risk subjects in families with COPD.
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