A 48-year-old patient is receiving mechanical ventilation fo…
A 48-year-old patient is receiving mechanical ventilation following a hernia repair. He is 6′ tall and weighs 75 kg (165 lb). Prior to initiating a spontaneous breathing trial, the therapist notes the following informationFIO2: 0.35SIMV mandatory rate: 6/minTotal rate: 14/minVt: 600 mLMIP: -26 cm H2OSpont Vt: 400 mLArterial blood gas results show:PH: 7.39PaCO2: 42 torrPaO2: 88 torrHCO3-: 23 mEq/LThe patient is to be placed on CPAP with an FIO2 of 0.40. Five minutes into the SBT, his respiratory rate increases to 28/min., heart rate from 110/min. to 135/min. and blood pressure changes from 112/70 mm Hg to 140/88 mm Hg. At this time, the therapist should