A 47-year-old,6'1" male patient is admitted to the hospital due to trauma from a motor vehicle accident.Forty-eight hours post admission,the patient is suffering from respiratory distress with severe hypoxemia and is intubated.A chest x-ray,done prior to intubation ,reveals a ground glass appearance bilaterally.The physician requests the volume-controlled continuous mandatory ventilation (VC-CMV)mode for this patient.The initial settings for the ventilator should be which of the following?

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Quizplus · Accepted Answer

First calculate ideal body weight (IBW)for a male,using the formula 106 + 6(ht - 60).This patient's IBW is 84 kg.Minute ventilation is about 100 mL/kg IBW,which would be 8.4 L/min.Since the patient appears to have Acute Respiratory Distress Syndrome (ARDS)the tidal volume should be set to between 4 and 6 mL/kg.This would make the appropriate tidal volume range 336 mL to 504 mL.This eliminates all of the choices except "A." Dividing the tidal volume range into 8.4 L/min gives the set rate range at 17 to 25 bpm.This also eliminates all but choice "A."

A 47-Year-Old,6'1" Male Patient Is Admitted to the Hospital Due