# Why is pressure measured in ATM in medical applications?

Pressure is often measured in units of atmospheres (ATM) in medical applications because it is a convenient and widely recognized unit of measure for pressure. One atmosphere is equal to 101.325 kPa (kilopascals), which is a standard unit of pressure in the International System of Units (SI).

In medical applications, pressure may be measured for a variety of purposes, such as monitoring the pressure of gases in the lungs, monitoring blood pressure, or measuring the pressure of fluid in the eye. Measuring pressure in ATM allows healthcare providers to easily communicate and compare pressure readings, as it is a widely recognized unit of measure.

What is the relation between Bar and ATM as both being the unit of pressure?

Bar and ATM (atmosphere) are both units of pressure, but they are not equivalent. One atmosphere is equal to 101.325 kPa (kilopascals), while one bar is equal to 100 kPa. This means that one atmosphere is slightly greater than one bar.

To convert from bar to ATM, you can use the following formula:

1 ATM = 1.01325 bar

To convert from ATM to bar, you can use the following formula:

1 bar = 0.986923 ATM

It is important to note that the use of different pressure units can lead to confusion and potential errors if not properly understood and accounted for. It is always important to clearly specify the units being used when measuring and communicating pressure values.