What formula is used to determine gas tank duration?

The formula used to determine gas tank duration is derived from the relationship between the contents of the gas cylinder, the delivery rate of the gas, and the pressure remaining in the tank. The correct formula, which is represented by the first choice, combines the cylinder pressure with the cylinder factor and divides by the flow rate to calculate how long the gas in the cylinder will last.

This formula is essential because the cylinder pressure indicates how much gas remains in the tank, and the cylinder factor provides a conversion measure that reflects the volume of gas in relation to the pressure. When this value is divided by the flow rate, which tells us how quickly gas is being drawn from the tank, it yields the duration in minutes that the remaining gas will last at that flow rate.

Understanding this formula is crucial for healthcare providers and emergency personnel to ensure they use oxygen or other medical gases effectively without running out unexpectedly, to manage patient care efficiently, particularly in emergency situations where timely decision-making is vital.

Other choices do not represent the correct relationship for calculating tank duration for medical gases, either by misrepresenting the necessary components or suggesting incorrect operations that would not yield a time-related outcome for gas duration.