[Assessment of antibiotic use and impact of an intervention intended to modify the prescribing behavior in surgical prophylaxis in 6hospitals in the metropolitan area of Monterrey, Mexico].

Background: Improper use of antibiotics increases antimicrobial resistance.

Objective: Evaluate the use of antibiotics and the impact of an intervention designed to improve antibiotic prescription for surgical prophylaxis in 6 hospitals of Monterrey, Mexico.

Material And Methods: Design: A prospective multicenter survey and a pretest-postest experimental study.

[Subclinical sensorineural hearing loss in female patients with rheumatoid arthritis].

Background: The rheumatoid arthritis is a clinical entity capable to cause hearing impairment that can be diagnosed promptly with high frequencies audiometry.

Objective: To detect subclinical sensorineural hearing loss in patients with rheumatoid arthritis.

Material And Methods: Cross-sectional study on patients with rheumatoid arthritis performing high frequency audiometry 125Hz to 16,000Hz and tympanometry.

Incidental benign metastasizing leiomyoma in a patient with bone sarcoma: a case report.

Background. The benign metastasizing leiomyoma is an exceptionally rare entity; it presents with ectopic leiomyoma nodules with a benign pattern. Symptoms vary according to the anatomic location.

[Rigid bronchoscopy and foreign body. Obsolute procedure?].

Foreign body aspiration represents an emergency event that usually requires immediate medical intervention. In some cases this event may be misdiagnosed with few, or absence of, clinical symptoms, but it can result in serious consequences. The continuous technical improvements in minimally invasive procedures such as bronchoscopy have permitted success in foreign body removal.