INTRODUCTION/AIMS: The prevalence of COPD and asthma is 7.8% and 5-10% in Mexico. Primary Care Physicians (PCP) attend to 85% of these patients. In 2015 a national program to diagnose, treat, and follow up on obstructive respiratory diseases launched at the first level. The PCP should receive some lectures during their permanence in the program. This study aimed to determine the knowledge of PCP inside and outside the program about this disease.

METHODS: Cross-sectional study among PCP that responded to a self-administered survey during a hybrid national forum for asthma on May 2023. The survey had three domains: spirometry, asthma, and COPD, with hypothetical cases. We evaluated, in spirometry: the grading of quality and artifacts; in asthma: diagnostic suspicion, selection of spirometry to confirm it, follow-up and treatment according to GINA; in COPD: calculation of the smoking index, diagnostic confirmation, treatment and follow-up according to GOLD.We scored the domains in decimals. We analyzed the data with Stata 17.0 with a confidence level of 95% and a p-value of 0.05.

RESULTS/CONCLUSIONS: The response rate was 89%. We analyzed 338 PCP (52% inside and 48% outside of the program). Figure 1 shows the scores domains. The asthma domain showed the highest scores, with differences favoring PCPs inside the program. Knowledge of spirometry and COPD were deficient in both groups. These areas need intervention.