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. 2021 Jun 28;78(2):97-102.
doi: 10.31053/1853.0605.v78.n2.28721.

[Stable Chronic Obstructive Pulmonary Disease Associated With Cognitive Impairment: Possible Causality Factor]

[Article in Spanish]
Lucía Belen Varela  1 , Facundo Correa  2 , Alexis Cazaux  3 , Agostina Spaccesi  4 , Daniel Antonio Salica  5 , Susana Vanoni  6
Affiliations

[Stable Chronic Obstructive Pulmonary Disease Associated With Cognitive Impairment: Possible Causality Factor]

[Article in Spanish]
Lucía Belen Varela et al. Rev Fac Cien Med Univ Nac Cordoba. .

Abstract
in English, Spanish

Backgruound: Chronic Obstructive Pulmonary Disease (COPD), a preventable and underdiagnosed pathology, can be defined as a progressive and poorly reversible limitation to airflow as a result of a persistent inflammatory response due to inhalation of harmful substances, particularly tobacco smoke. The disease has a systemic impact. Among other conditions, it may increase the risk of cognitive impairment along with its associated consequences.

Methods: Prospective, cross-sectional, observational and analytical design. The space were COPD patients who visited in two health institutions from June 2017 to September 2018. Non-probabilistic and convenience sampling. Data were collected on demographics, tobacco consumption, comorbidities (Charlson index), a validated scale for dyspnea (MCRm), the main symptom in COPD and the COPD Assessment Test (CAT) were applied along with a history of exacerbation of the disease. The severity of COPD was evaluated by spirometry according to GOLD guideline. Cognitive impairment was assessed using Neuropsi.

Outcomes: The final sample consisted of 44 subjects. According to spirometry and GOLD, 7 patients (15.9%) classified in group 1 (mild), 19 (43.2%) in group 2 (moderate), 11 (25%) in group 3 (severe) and 7 (15.9%) in group 4 (very serious). Of the 44 patients recruited, 28 (63.6%) had normal cognitive function and 16 (36.3%) had some degree of cognitive impairment. Memory was the most compromised function.

Conclusion: Difficulties in recruitment impeded reaching the expected sample size. However, a trend was observed favoring the association. It is important to insist on avoiding smoking because it seems to increase the risk of cognitive impairment that further disrupts the quality of life and makes treatment difficult.

Introducción: La enfermedad pulmonar obstructiva crónica (EPOC) se define como limitación progresiva y poco reversible al flujo aéreo a consecuencia de una respuesta inflamatoria por inhalación sustancias, en particular humo del tabaco. La enfermedad tiene repercusión sistémica y entre otras, puede aumentar el riesgo de deterioro cognitivo.

Materiales y métodos: Diseño prospectivo, transversal, observacional y analítico. El universo fueron pacientes EPOC que consultaron en dos instituciones de salud desde junio de 2017 a septiembre de 2018. Muestreo no probabilístico, por conveniencia. Se recogieron datos demográficos, de comorbilidades, se aplicó la escalaMCRm de disnea y se valoraron antecedentes de exacerbación de la enfermedad. La gravedad de la EPOC se reconoció por espirometría de acuerdo a GOLD. El deterioro cognitivo fue evaluado mediante el Neuropsi.

Resultados: La muestra final incluyó 44 sujetos. De acuerdo a espirometría y GOLD 7 pacientes (15,9 %) clasificaron en el grupo 1 (leve), 19 (43,2 %) en el 2 (moderado), 11 (25 %) en el 3 (grave) y 7 (15,9 %) en el 4 (muy grave). De los 44 pacientes reclutados, 28 (63,6 %) presentaron una función cognitiva normal y 16 (36,3 %), algún grado de alteración cognitiva. La memoria fue la función más comprometida.

Conclusiones: Dificultades en el reclutamiento impidieron alcanzar el tamaño de muestra esperado. Sin embargo, se observó una tendencia a favor de la asociación. Resulta importante insistir en evitar el tabaquismo pues este parece incrementar el riesgo de deterioro cognitivo que perturba aún más la calidad de vida y dificulta el tratamiento.

Keywords: pulmonary disease, chronic obstructive; cognitive dysfunction; tobacco use disorder.

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Conflict of interest statement

Conflicto de interés: ninguno.

Figures

Figura Nº 1
Figura Nº 1. Clasificación de los pacientes EPOC
Figura Nº 2
Figura Nº 2. Función cognitiva en cada sexo.
See this image and copyright information in PMC

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