A critical patient needs to be transported by ground to the trauma center which is three and a half hours away. The patient is currently on a 12 liter per minute oxygen non-rebreathing mask. The transport unit can only carry E-type oxygen tanks. How many E tanks will you need to take along to make the trip safely? Now, for a challenge. A concept that is used in respiratory care frequently is the concept of minute ventilation. Minute ventilation is the total gas flow that is respired by the patient over the course of one minute. Its formula looks like this: VE (Minute ventilation (also known as minute volume) is equal to the product of respiratory rate (abbreviated "f" for "frequency") and tidal volume (abbreviated "Vt"). Or VE = F(Vt) It is reported in Liters per minute (L/min or LPM). With this concept in mind, answer the following: You are ventilating a patient with a Pneupac para PAC transport ventilator. It looks like this: The patient has a tidal volume of 500 mL and a respiratory rate of 14 breaths per minute. The patient's FiO2 is 1.0 (100%). The ventilator is attached to a size E oxygen tank. The gauge on the tank reads 1700 PSI. How long will this system run (assuming you run the tank until it is empty)?