Rev Invest Clin
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The values of arterial blood gases (ABG) change with altitude above sea level; empirical verification is essential because ventilatory acclimatization varies with ethnicity and a population's adaptation. ⋯ Mean PaCO2 was 30.7 mmHg, implying a mean alveolar ventilation of around 30% above that at sea level.
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Alcohol consumption has been linked to numerous pathologic conditions, including infectious diseases and several types of cancer. Alcohol exerts its modulatory effects on the immune system (IS) in a dose- and time-dependent manner. Numerous studies indicate that these alterations affect responses such as peripheral inflammation or decreased antibody production and promote chronic inflammation, leading to cell death. ⋯ There is also some epidemiological evidence demonstrating the causal role of alcohol in the development of various types of cancer, such as head-and-neck cancer, esophageal cancer, colorectal cancer, liver cancer, and breast cancer. Most recent evidence suggests that factors related to alcohol consumption and cancer include increased levels of acetaldehyde, production of reactive oxygen species, alteration in DNA methylation, and modifications in retinoid metabolism. In addition, changes associated with alcohol use on the IS and intestinal microbiota may favor the growth of some types of tumors.