Improved auscultation skills in paramedic students using a modified stethoscope.

BACKGROUND: The Ventriloscope® (Lecat's SimplySim, Tallmadge, OH) is a modified stethoscope used as a simulation training device for auscultation. OBJECTIVE: To test the effectiveness of the Ventriloscope as a training device in teaching heart and lung auscultatory findings to paramedic students. METHODS: A prospective, single-hospital study conducted in a paramedic-teaching program. The standard teaching group learned heart and lung sounds via audiocassette recordings and lecture, whereas the intervention group utilized the modified stethoscope in conjunction with patient volunteers. Study subjects took a pre-test, post-test, and a follow-up test to measure recognition of heart and lung sounds. RESULTS: The intervention group included 22 paramedic students and the standard group included 18 paramedic students. Pre-test scores did not differ using two-sample t-tests (standard group: t [16]=-1.63, p=0.12) and (intervention group: t [20]=-1.17, p=0.26). Improvement in pre-test to post-test scores was noted within each group (standard: t [17]=2.43, p=0.03; intervention: t [21]=4.81, p<0.0001). Follow-up scores for the standard group were not different from pre-test scores of 16.06 (t [17]=0.94, p=0.36). However, follow-up scores for the intervention group significantly improved from their respective pre-test score of 16.05 (t [21]=2.63, p=0.02). CONCLUSION: Simulation training using a modified stethoscope in conjunction with standardized patients allows for realistic learning of heart and lung sounds. This technique of simulation training achieved proficiency and better retention of heart and lung sounds in a safe teaching environment.

Characteristics of patients transported by an aeromedical service for acute toxicologic emergencies: a 5-year experience.

INTRODUCTION: Aeromedical services are used routinely in the prehospital and interhospital transfer of patients with trauma, neurosurgical, cardiac, and other conditions requiring specialized care. The use of aeromedical transport in patients with acute toxicologic emergencies is not well described. We sought to investigate and describe the characteristics of patients transported by our aeromedical service. SETTING: The study was performed at an urban critical care transport service operating both ground and aeromedical units and transporting an average of 3,362 patients per year during the study period. METHODS: Charts from the 5-year period of 2000 to 2004 for which a toxicologic emergency was coded as the primary diagnosis were identified and reviewed by the authors. Data abstracted included age, sex, toxin(s) involved, treatment rendered at the scene/bedside and en route by the transport team, and additional data (electrocardiogram [ECG] findings, serum levels) when appropriate. RESULTS: One hundred thirty-three patients were transported (for a total of 135 transports). Most (82%) were transported by air. Carbon monoxide was the most common toxic exposure, accounting for 16% of all transports. Fifty-seven percent of the patients were intubated, with 11% intubated by the flight crew. Antidotes were administered in 40 patients, with naloxone and bicarbonate being the most common. CONCLUSION: Acute toxicologic emergencies accounted for a small percentage of total transports. The most common additional intervention by flight crews was endotracheal intubation. Identification of common poisonings encountered by flight crews may assist services in developing education and quality assurance programs.