[Diabetes mellitus--fitness to drive private and commercial vehicles]. / Die Fahrtauglichkeit und die Kraftfahrereignung bei Diabetes mellitus. Der Diabetiker am Steuer.

For diabetic drivers of private or commercial vehicles and with impaired driving fitness, it is particularly important to avoid accidents. They must be aware of and know how to avoid potential diabetes-related driving problems. This especially applies to hypoglycemia awareness training, recognition of their hypoglycemic symptoms and intensive self-monitoring of blood glucose levels. There are new EU guidelines for driver's licenses. To determine the suitability of a diabetic person for road traffic, a medical evaluation is necessary. Insulin-treated diabetics should receive and observe the "Advice for Motorists under Insulin Treatment."

A descriptive analysis of air medical directors in the United States.

INTRODUCTION: The purpose of this study was to describe the characteristics and functions of U.S. physician air medical directors. METHODS: This descriptive study included physician directors of U.S. rotor-wing and fixed-wing air medical services. Data were obtained using a standardized survey in regard to the training, education, and roles/responsibilities of directors of critical care air medical services (AMSs). RESULTS: Data from 153 of 276 surveys (55.4%) were analyzed and reported in this study. Air medical directors' residency training varied, but emergency medicine was the most frequently reported training type (38.0%). Most directors reported less than 5 years of job experience in AMS (57.3%), had neither residency/fellowship-based flight experience (63.9%) nor practical flight experience (60.5%), and performed director functions on a part-time basis (93.2%). The six most commonly reported medical director activities were medical protocol development (87.6%), quality improvement activities (86.3%), medical crew training (80.4%), administrative negotiations (79.1%), on-line medical control (71.9%), and personnel hiring (59.5%). The three most common sources of continuing education for medical directors were literature review (95.8%), attendance at medical conferences (79.2%), and participation in professional organizations (59.7%). CONCLUSION: These data describe the characteristics of U.S. air medical directors and identify physician contributions to patient care in the aviation environment.

Radio Frequency Signals in Jupiter's Atmosphere

During the Galileo probe's descent through Jupiter's atmosphere, under the ionosphere, the lightning and radio emission detector measured radio frequency signals at levels significantly above the probe's electromagnetic noise. The signal strengths at 3 and 15 kilohertz were relatively large at the beginning of the descent, decreased with depth to a pressure level of about 5 bars, and then increased slowly until the end of the mission. The 15-kilohertz signals show arrival direction anisotropies. Measurements of radio frequency wave forms show that the probe passed through an atmospheric region that did not support lightning within at least 100 kilometers and more likely a few thousand kilometers of the descent trajectory. The apparent opacity of the jovian atmosphere increases sharply at pressures greater than about 4 bars.

The effectiveness of bystander CPR in an animal model.

Several clinical studies have yielded conflicting results in examining the effectiveness of bystander CPR (BCPR). The purpose of this pilot study was to determine the effectiveness of BCPR in an animal model of cardiac arrest and resuscitation. Ten swine were instrumented for hemodynamic and regional blood flow measurements with tracer microspheres. After two minutes of ventricular fibrillation (VF), the animals received eight minutes of either BCPR (five) or no-bystander CPR (NBCPR; five). Defibrillation was then attempted in both groups. If unsuccessful, CPR was begun and epinephrine 0.02 mg/kg was administered. Defibrillation was attempted again three and one-half minutes after epinephrine administration. Regional myocardial and cerebral blood flows were measured 30 seconds and five and one-half minutes after initiation of BCPR and one minute after epinephrine administration. In the BCPR group, myocardial blood flow was initially 29.0 +/- 33.2 and decreased to 15.0 +/- 21.5 mL/min/100 g during the last two and one-half minutes of BCPR. Cortical cerebral blood flow was initially 2.0 +/- 2.8 and fell to 0.6 +/- 0.8 mL/min/100 g during the last two and one-half minutes of BCPR. There were no statistical differences in myocardial blood flow and cerebral blood flow between the initial or late stages of BCPR (P greater than .14). There were no statistical differences in myocardial blood flow and cerebral blood flow between BCPR and NBCPR groups after epinephrine administration (P greater than .09).(ABSTRACT TRUNCATED AT 250 WORDS)