Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713

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Diagnosing alpha-1 antitrypsin deficiency: does it prevent or improve the course of COPD?

Diagnóstico de deficiência de alfa-1 antitripsina: traz benefícios para a prevenção ou evolução do paciente com DPOC?

Irma Godoy1

J Bras Pneumol.2016;42(5):307-308

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Risk factors for cardiovascular disease in patients with COPD: mild-to-moderate COPD versus severe-to-very severe COPD

Fatores de risco de doença cardiovascular em pacientes com DPOC: DPOC leve/moderada versus DPOC grave/muito grave

Laura Miranda de Oliveira Caram1, Renata Ferrari1, Cristiane Roberta Naves1, Liana Sousa Coelho1, Simone Alves do Vale1, Suzana Erico Tanni1, Irma Godoy1

J Bras Pneumol.2016;42(3):179-184

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Objective: To assess and compare the prevalence of comorbidities and risk factors for cardiovascular disease (CVD) in COPD patients according to disease severity. Methods: The study included 25 patients with mild-to-moderate COPD (68% male; mean age, 65 ± 8 years; mean FEV1, 73 ± 15% of predicted) and 25 with severe-to-very severe COPD (males, 56%; mean age, 69 ± 9 years; mean FEV1, 40 ± 18% of predicted). Comorbidities were recorded on the basis of data obtained from medical charts and clinical evaluations. Comorbidities were registered on the basis of data obtained from medical charts and clinical evaluations. The Charlson comorbidity index was calculated, and the Hospital Anxiety and Depression Scale (HADS) score was determined. Results: Of the 50 patients evaluated, 38 (76%) had been diagnosed with at least one comorbidity, 21 (42%) having been diagnosed with at least one CVD. Twenty-four patients (48%) had more than one CVD. Eighteen (36%) of the patients were current smokers, 10 (20%) had depression, 7 (14%) had dyslipidemia, and 7 (14%) had diabetes mellitus. Current smoking, depression, and dyslipidemia were more prevalent among the patients with mild-to-moderate COPD than among those with severe-to-very severe COPD (p < 0.001, p = 0.008, and p = 0.02, respectively). The prevalence of high blood pressure, diabetes mellitus, alcoholism, ischemic heart disease, and chronic heart failure was comparable between the two groups. The Charlson comorbidity index and HADS scores did not differ between the groups. Conclusions: Comorbidities are highly prevalent in COPD, regardless of its severity. Certain risk factors for CVD, themselves classified as diseases (including smoking, dyslipidemia, and depression), appear to be more prevalent in patients with mild-to-moderate COPD.

 


Keywords: Pulmonary disease, chronic obstructive; Spirometry; Cardiovascular diseases; Risk factors.

 


Impact of adherence to long-term oxygen therapy on patients with COPD and exertional hypoxemia followed for one year

Impacto da adesão à oxigenoterapia de longa duração em pacientes com DPOC e hipoxemia decorrente do esforço acompanhados durante um ano

Carolina Bonfanti Mesquita1,a, Caroline Knaut1,b, Laura Miranda de Oliveira Caram1,c, Renata Ferrari1,d, Silmeia Garcia Zanati Bazan2,e, Irma Godoy1,f, Suzana Erico Tanni3,g

J Bras Pneumol.2018;44(5):390-397

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Objective: To determine the impact of adherence to long-term oxygen therapy (LTOT) on quality of life, dyspnea, and exercise capacity in patients with COPD and exertional hypoxemia followed for one year. Methods: Patients experiencing severe hypoxemia during a six-minute walk test (6MWT) performed while breathing room air but not at rest were included in the study. At baseline and after one year of follow-up, all patients were assessed for comorbidities, body composition, SpO2, and dyspnea, as well as for anxiety and depression, having also undergone spirometry, arterial blood gas analysis, and the 6MWT with supplemental oxygen. The Saint George's Respiratory Questionnaire (SGRQ) was used in order to assess quality of life, and the Body mass index, airflow Obstruction, Dyspnea, and Exercise capacity (BODE) index was calculated. The frequency of exacerbations and the mortality rate were noted. Treatment nonadherence was defined as LTOT use for < 12 h per day or no LTOT use during exercise. Results: A total of 60 patients with COPD and exertional hypoxemia were included in the study. Of those, 10 died and 11 experienced severe hypoxemia during follow-up, 39 patients therefore being included in the final analysis. Of those, only 18 (46.1%) were adherent to LTOT, showing better SGRQ scores, higher SpO2 values, and lower PaCO2 values than did nonadherent patients. In all patients, SaO2, the six-minute walk distance, and the BODE index worsened after one year. There were no differences between the proportions of adherence to LTOT at 3 and 12 months of follow-up. Conclusions: Quality of life appears to be lower in patients with COPD and exertional hypoxemia who do not adhere to LTOT than in those who do. In addition, LTOT appears to have a beneficial effect on COPD symptoms (as assessed by SGRQ scores). (Brazilian Registry of Clinical Trials - ReBEC; identification number RBR‑9b4v63 [http://www.ensaiosclinicos.gov.br])

 


Keywords: Respiratory insufficiency; Pulmonary disease, chronic obstructive; Patient compliance; Hypoxia; Oxygen inhalation therapy.

 


 

 


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