Example 2 Viability Index Score sheet illustrating a Day 1 VIS elevation due to pre-ECMO cardiac arrest. The patient survived.
In Example 2, the Day 1 Daily VI score of 23 plots lower on the survival curve than the previous example. This patient arrested just prior to ECMO and the elevated Day 1 Daily VI score is a reflection of the physiologic stress experienced by the patient. However, subsequent daily and cumulative scores demonstrate that the patient recovered from the stress quickly after the initiation of ECMO. As the VI score continued to improve over subsequent days there was an ever decreasing risk of a dangerous complication or death.
Perfusion Theory is an educational platform for the Oxygen Pressure Field Theory (OPFT). August Krogh’s theoretical concept of the oxygen pressure field is explained and then applied to clinical applications in perfusion practice.