Rev Invest Clin
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Comparative Study
[Precision and accuracy of "a pocket" pulse oximeter in Mexico City].
Pulse oximeters are frequently used in the clinical practice and we must known their precision and accuracy. The objective was to evaluate the precision and accuracy of a "pocket" pulse oximeter at an altitude of 2,240 m above sea level. ⋯ The miniature oximeter Nonin is precise and accurate at 2,240 m of altitude. The observed levels of HbCO did not affect the performance of the equipment. The oximeter good performance, small size and low cost enhances its clinical usefulness.
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There are very few studies that analyze surgical morbidity and mortality in the general population and the factors associated with those events. ⋯ Surgical mortality in our series is low. In 0.3% of procedures it was detected a potentially preventable event. Postoperative deaths occurred in older patients with low albumin levels.