Hyponatremia is commonly defined as a serum sodium concentration below 135 meq/L but can vary to a small degree in different clinical laboratories [1,2]. The dilutional fall in serum sodium is in most patients associated with a proportional reduction in the serum osmolality (ie, to a level below 275 mosmol/kg), but there are some exceptions.
The iron worker, Gary Russo, sounded like Frank Sinatra and wowed pedestrians a few years ago with his singing by a 2nd Avenue subway construction site in Manhattan during his lunch breaks.
Sinatra's vocal style represented a strong departure from the crooning style of his idol, Bing Crosby. Sinatra's generation represented the first generation of children that had grown up in the era of the microphone, and the amplification of sound enabled singers to sing in a much softer, personal and nuanced style.