<prompt> Size of tracheal tube in a newborn weighing 2.5kg is2345  <response>: Guidelines for Tracheal Tube Size and Depth of InseionTUBE SIZE MM INTERNAL DIAMETERDEPTH OF INSEION FROM UPPER LIP cmWEIGHT gGESTATION wk2.56.5-71,0002837-81,000-2,00028-3433.58-92,000-3,00034-383.54.093,00038Ref: Nelson; 20th edition; Page no: 846 