Gender Disparities in Cardiac Catheterization Rates Among Emergency Department Patients With Chest Pain.

Background: Previous studies have noted differences in rates of cardiac testing based on gender of patients. We evaluated cardiac catheterization rates for men and women presenting to the emergency department (ED) with chest pain, particularly among patients without a history of myocardial infarction (MI) or recent positive stress test.

Methods: We performed a prospective evaluation of patients presenting to an urban, academic medical center for assessment of chest pain.

Observational Study of Grand Canyon Rim-to-Rim Day Hikers: Determining Behavior Patterns to Aid in Preventive Search and Rescue Efforts.

Introduction: Grand Canyon National Park has seen an increase in visitors traversing the canyon from rim to rim (R2R) in a single day. R2R hikers travel over 33.8 km (21 mi) over 3300 m (11,000 ft) of elevation change and endure large temperature changes.