[Clinical case of the month. Thyrotoxic periodic paralysis. Report of a case in a Somalian male].

We report the case of a man hospitalized for tetraparesis related with hypokalemia due to a potassium shift from the extracellular to the intracellular compartment revealing a hyperthyroidism. We will discuss different physiopathological hypotheses giving relating periodic paralysis and hyperthyroidism. Correction of hypokalemia combined with a synthetic antithyroid agent and a beta blocking drug allowed complete motor fonctional recovery.

Extended time-to-collision measures for road traffic safety assessment.

This article describes two new safety indicators based on the time-to-collision notion suitable for comparative road traffic safety analyses. Such safety indicators can be applied in the comparison of a do-nothing case with an adapted situation, e.g.