Isotonic Maintenance Fluids for the Prevention of Hospital-Acquired Hyponatremia. The use of isotonic fluids in maintenance fluids for the prevention of hospital-acquired hyponatremia in acutely ill patients was initially controversial,58,59 owing mainly to the potential for unintended consequences.
Twice a year according to the book. Some pianos are very stable but some are ready for a tuning after a few months. New pianos need more regular tuning, usually four times a year for the first few years until the âstretchâ is out of the strings. Should you transport your piano to another house, it will need a month to acclimatise to its new surroundings.
After being brought up to pitch, the piano has 3 neat coils of wire on the tuning pins. A piano will undergo several tunings in the shop to bring it up to its final pitch. The first year after a piano is restrung, it generally needs more tunings than in the following years, because strings are still stretching.