BACKGROUND:

In Mexico the reports mention between 114 and 122 daily deaths associated with smoking. In 2011, Hallan and Orth published the results of a 10-year follow-up of more than 65,000 participants, concluding that the risk of developing renal failure is 3 to 4 times higher in smokers than in non-smokers.

OBJECTIVE:

To demonstrate how the use of tobacco in patients without comorbidities may favor glomerular hyperfiltration, thus increasing the risk of chronic kidney disease.

MATERIAL AND METHOD:

A cross-sectional, analytical, prospective study was conducted with patients from the Xoco General Hospital, Mexico City; they were divided into 2 groups. Blood samples were taken to obtain the serum creatinine and urea values, using the MDRD and CKD formulas. EPI estimated the glomerular filtration rate. Statistical analysis was performed with the SPSS V21 program.

RESULTS:

There were included 152 patients. Majority of the smoking population had high dependence with 20 cases and a prevalence of 27%. With a value of p = 0.023 for glomerular filtration rate (GFR) by MDRD and p = 0.006 for CKD-EPI. They had statistically significant differences. A statistically significant positive correlation (r = 0.413, p < 0.01) between the smoking index and the GFR measured by MDRD was demonstrated in this study. Statistically significant positive correlation (r = 0.238, p = 0.041) was also found between smoking index and GFR measured by CKD-EPI.

CONCLUSION:

Smoking causes high glomerular hyperfiltration compared to not-smoking subjects; this relation is dosis-dependent.

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