Snowmobile fatalities aspects on preventive measures from a 25-year review.

During October 1973 through May 1998, 157 snowmobile fatalities were autopsied in Northern Sweden, including 131 riders, 15 passengers, six occupants with unknown position and five victims pulled by a snowmobile. Most fatalities occurred during March and April (41%), on weekends/holidays (75%), between 18:00 and 02:00 h (59%), during darkness (63%), in clear weather (84%) and at leisure time (94%). The median age was 39 years and 92% were men. The most common causes of death were blunt trauma (53%) and drowning (38%). A total of 64% were inebriated by alcohol, with a mean blood alcohol concentration of 1.7 g/l. More inebriated victims were found during weekends/holidays than on weekdays (75 vs. 51%) and during nighttime than during daytime (92 vs. 52). Driving into water was the most common event (38%) followed by collisions with immobile objects (20%). Alcohol and speeding were the most common contributors to the crashes, while flotation snowmobile suit and helmet use were considered to be the most important injury prevention factors.

Alcohol and drugs in fatally and non-fatally injured motor vehicle drivers in northern Sweden.

Alcohol and drugs are important risk factors for traffic injuries, a major health problem worldwide. This prospective study investigated the epidemiology and the presence of alcohol and drugs in fatally and hospitalized non-fatally injured drivers of motor vehicles in northern Sweden. During a 2-year study period, blood from fatally and hospitalized non-fatally injured drivers was tested for alcohol and drugs. The study subjects were recruited from well-defined geographical areas with known demographics. Autopsy reports, medical journals, police reports, and toxicological analyses were evaluated. Of the fatally injured, 38% tested positive for alcohol and of the non-fatally 21% tested positive; 7% and 13%, respectively, tested positive for pharmaceuticals with a warning for impaired driving; 9% and 4%, respectively, tested positive for illicit drugs. The most frequently detected pharmaceuticals were benzodiazepines, opiates, and antidepressants. Tetrahydrocannabinol was the most frequently detected illicit substance. No fatally injured women had illegal blood alcohol concentration. The relative proportion of positively tested drivers has increased and was higher than in a similar study 14 years earlier. This finding indicates that alcohol and drugs merit more attention in future traffic safety work.

Influence of energy drinks and alcohol on post-exercise heart rate recovery and heart rate variability.

BACKGROUND: Media have anecdotally reported that drinking energy drinks in combination with alcohol and exercise could cause sudden cardiac death. This study investigated changes in the electrocardiogram (ECG) and heart rate variability after intake of an energy drink, taken in combination with alcohol and exercise. METHODS: Ten healthy volunteers (five men and five women aged 19-30) performed maximal bicycle ergometer exercise for 30 min after: (i) intake of 0.75 l of an energy drink mixed with alcohol; (ii) intake of energy drink; and, (iii) no intake of any drink. ECG was continuously recorded for analysis of heart rate variability and heart rate recovery. RESULTS: No subject developed any clinically significant arrhythmias. Post-exercise recovery in heart rate and heart rate variability was slower after the subjects consumed energy drink and alcohol before exercise, than after exercise alone. CONCLUSION: The healthy subjects developed blunted cardiac autonomic modulation after exercising when they had consumed energy drinks mixed with alcohol. Although they did not develop any significant arrhythmia, individuals predisposed to arrhythmia by congenital or other rhythm disorders could have an increased risk for malignant cardiac arrhythmia in similar situations.

Land motor vehicle-related drownings in Sweden.

OBJECTIVES: Knowledge regarding drownings related to land motor vehicle events is limited although reports of these events occur globally. This study elucidates crash and injury mechanisms in motor vehicle-related drownings in a Swedish population during 1992 through 2006 in order to suggest preventive countermeasures. METHODS: The cases were identified in the National Board of Forensic Medicine database and crosschecked against the official statistics. All available autopsy reports, hospital records, and police records were analyzed. In addition, corresponding in-depth analyses performed by the Swedish Road Administration were reviewed and analyzed. RESULTS: In total, 83 drownings occurred in 64 vehicles. The great majority of victims had no serious injuries (92% MAIS