Objective: To classify into clinical syndromes the symptoms of acute and chronic COVID-19 infection among a highaltitude population during the first and second waves. Materials and methods: A prospective and longitudinal study. An online questionnaire was administered to people infected with SARS-CoV-2 during the first and second waves from March 2020 to December 2021. The measures of central tendency were expressed as means and percentages with a 95 % confidence interval. The chi-square test associated the variables and considered a p value ≤ 0.05. IBM SPSS Statistics statistical software V22 was used. Results: A total of 87 women and 63 men with an average age of 44.12 (± 14.56) years participated in the research, out of whom 48.70 % and 51.30 % were infected in the first and second waves, respectively. The 59 reported symptoms were grouped into 19 syndromes for the acute phase and ...

Objective: To determine the blood levels of two oxidative stress biomarkers among native women exposed to wood smoke living at high altitude (3,850 m a.s.l.). Malondialdehyde (MDA) levels and carboxyhemoglobin (COHb) percentage in venous blood, which is also a cellular hypoxia biomarker, were analyzed. Materials and methods: A descriptive case-series study conducted in 74 women between 14 and 55 years of age exposed to wood smoke and coming from the rural area of the Copacabana Municipality (La Paz, Bolivia) at 3,850 m a.s.l. Screening was carried out through a survey and a complete physical examination. MDA levels and COHb percentage in venous blood were determined, and the demographic variables and transcutaneous oxygen saturation were measured. A descriptive statistical analysis was performed and measures of central tendency were calculated using IBM SPSS Statistics Version 18. Result...

Objective: To characterize the cardiorespiratory function and the state of oxidative stress resulting from the exposure to wood smoke in women who live at high altitude (3,850 m a.s.l.). Materials and methods: An observational case-series study. The cardiorespiratory function was analyzed, and thebiomarkers of oxidative stress malondialdehyde (MDA) and carboxyhemoglobin (COHb) were quantified. Measures of central tendency and dispersion were determined. The statistical methods of association and correlation were implemented. Results: Sixty (60) patients were included in the research. Fifty percent (50.00 %) of the participants showed clinical evidence of heart disease and 25.00 % had clinical symptoms of respiratory disease. Forty-five percent (45.00 %) of the spirometries revealed normal values. Thirty-six point six seven percent (36.67 %) showed a decrease in the forced expiratoryvolum...