# MVO2

Myocardial Volume Oxygen (consumption) is a value that is frequently used by Physicians and Paramedics to assess a patient's hemodynamic status. Specifically, this formula approximates the amount of oxygen used by the heart. This formula is also called the pulse pressure product.

The MVO2 value is easy to calculate. You simply multiply the heart rate and systolic blood pressure, the resulting number is the MVO2 value.

The single value doesn't mean much to anyone but if you compare values, you can tell whether the patient's heart is more or less burdened.

EXAMPLE:13:01 48 yo W M with chest pressure, VS BP-130/90, P-68

13:06 After one Nitro, chest pressure worse, VS BP-102/70, P-101

## MVO2 = SBP * HR

Enter Systolic Blood Pressure and heart rate then press calc

13:01 Systolic BP    Heart Rate       MVO2 =

13:06 Systolic BP    Heart Rate       MVO2 =

Why did the patient get worse? If you gave the patient a Nitro while they were standing or sitting up, you may have caused a reflex tachycardia and increased the work of the heart! (you should always give Nitro to your patients lying reclined if possible)