[Das unterschätzte Verletzungsrisiko beim Freizeitschlittenfahren]. / Das unterschätzte Verletzungsrisiko beim Rodeln im Freizeitsport.

BACKGROUND: Sledding is generally considered to be a relatively harmless winter leisure activity. The increased incidence of injuries, some of them severe, in our emergency department in the catchment area of several sledding slopes prompted an analysis of this patient population with respect to frequency and severity of injuries. PATIENTS AND METHODS: Based on the hospital documentation system, a retrospective evaluation of all emergency department visits in the winters 2016-2019 was performed. The words "sled", "sledge", "bob", "sledding", "sleighing", "sledging" were used as keywords, and the recorded data were analyzed with respect to outpatient treatment, inpatient treatment, inpatient treatment days, treatment days in the intensive care unit, number of necessary operations, injury patterns, and injury severity. RESULTS: A total of 175 injured patients were recorded over the 3­year period. In 94 patients (54%) the injury was classified as mild, 70 patients (40%) required inpatient treatment with an average length of stay of 8 days, resulting in a total of 590 inpatient treatment days. Surgical treatment was given to 49 (28%) of the injured with a total of 66 operations, 81 patients suffered from severe injuries up to multiple trauma with an injury severity score (ISS) of 34. DISCUSSION: The study demonstrates that sledding has a significantly higher injury potential than generally assumed and that the resulting costs and consequences of accidents are relevant. Especially on the designated sledge slopes, an increase in safety standards could be achieved through appropriate measures and rules.

Shortening of the twitch stabilization period by tetanic stimulation in acceleromyography in infants, children and young adults (STSTS-Study): a prospective randomised, controlled trial.

Acceleromyography is characterised by an increase of the twitch response T1 (first twitch of the train-of-four [TOF]) during first 30 min of monitoring known as the staircase phenomenon. In adults the staircase phenomenon can be avoided by tetanic prestimulation. This study examined, if tetanic prestimulation eliminates the staircase phenomenon in children. After written informed consent, the neuromuscular function of 80 children, 10 in each age group (< 6 months, 6-12 months, 12-24 months, 2-3 years, 3-6 years, 6-12 years, 12-18 years, and ≥ 18 years) was measured on both arms simultaneously over 30 min under general anaesthesia. The ulnaris nerve was stimulated using the TOF technique every 15 s. The twitch response (T1, TOF ratio [TOFR]) was measured by acceleromyography. Before calibration, tetanic prestimmulation (50 Hz for 5 s) was administered to one randomly selected arm. The effect of tetanic prestimulation and age was analysed using general linear models based on the normalized T1 and TOFRs of both arms. Tetanic prestimulation significantly affected T1 values avoiding the staircase phenomenon (p < 0.0001). After 5.8 min [1.0-17.2 min] the normalized T1 values increased to 117% [102-147%] without prestimulation (p < 0.0001) independent of the age group (p = 0.539). The normalized TOFR was stable throughout the observation period of 30 min 100% [95-107%]. Infants (> 12 weeks), children, and young adults (< 18 years) develop similar characteristics of the staircase phenomenon than adults. Tetanic prestimulation prevents the staircase phenomenon in these age groups. The stability of the TOFR reading confirms its value to monitor neuromuscular function over time.Registration: The study was registered as NCT02552875 on Clinical Trials.gov on July 29, 2014.