Final answer:
The EMT should verify the patient's comfort level for ventilation rate when ventilating a conscious patient's tracheostomy tube with a connected bag-valve mask.
Step-by-step explanation:
While ventilating a conscious patient's tracheostomy tube with a connected bag-valve mask, the EMT should verify the patient's comfort level for ventilation rate. If ventilation is low, the respiratory rate will decrease, while if ventilation is high, the respiratory rate will increase. The volume of air per breath may also vary with ventilation.