Evaluating the Use of Prehospital Lung Ultrasound in EMS: A Multicenter Pilot Study

The goal of this prospective nonrandomized study is to determine if prehospital lung ultrasound findings result in a change in patient management. This study will look at how lung ultrasound exam improves diagnosis of respiratory distress in patients being treated by Emergency Medical Services, such as patients with heart failure. Additional questions include:

* How well can paramedics obtain and interpret ultrasound images? * How does ultrasound use change treatment received by patients? * How does ultrasound use impact patient outcomes? Participants will receive a lung ultrasound exam, but otherwise receive standard evaluation and care. Patients who receive ultrasound will be compared to those who did not receive ultrasound for logistical reasons and patients from before the use of ultrasound. Ultrasound will not be withheld from any patient for the purposes of the study.