this has been suggested numerous times, need to work on this
I came across another table (Additional Resources of AnkiHub ID: 564be43c-3af7-4f34-8d7a-bb12f43e2cd0), again presumable from UWorld, which defines MvO2 as “mixed” venous oxygen saturation. However, AMBOSS denotes this value as “SvO2” and simple google searches for MvO2 direct to articles about “myocardial” oxygen saturation. Further, other AnKing cards (AnkiHub ID: 15aeed18-ef2e-441a-a554-d857d7522039) define MvO2 as “myocardial”. One way or the other consistency is needed and cards need editing. Other potentially erroneous cards: ee4ee4d8-6d90-4c37-a53b-d21438752338; 1aa8cb49-059f-4275-928b-ff4ff74d7eb3
thank you for this! this helps us a lot 
Oh wow this really has come up a lot… I’ll try and do some cardio practice questions on UWorld today and hopefully find a definitive picture/explanation to submit
I didn’t find questions specifically on cardiogenic shock or MvO2, but here’s a couple UWorld question IDs with relevant tables: QID 25876, 26984
For what its worth, I did some outside research since I haven’t found a definitive description of MvO2 on UWorld. Myocardial tissue oxygenation is highly dependent on two factors: [1] myocardial oxygen consumption/demand and [2] coronary perfusion pressure (CPP), defined as CPP = Aortic Diastolic Pressure (ADP) – Left Ventricular End-Diastolic Pressure (LVEDP). Myocardial tissue oxygenation is directly proportional to CPP and inversely proportional to myocardial oxygen consumption/demand. In cardiogenic shock (inability to adequately contract the heart), a few notable changes occur: [1] ejection fraction (EF) falls causing increased LVEDP, [2] mean arterial blood pressure (MAP) decreases due to low EF, [3] reflex tachycardia occurs due to diminished MAP, [4] mycardial oxygen consumption/demand increases due to reflex tachycardia, and [5] CPP decreases due to the combination of decreased ADP and increased LVEDP. As a whole, myocardial tissue oxygenation decreases while myocardial oxygen demand increases. If MvO2 denotes “myocardial oxygen consumption/demand” this card would be incorrect as MvO2 should increase. However, if MvO2 denotes “myocardial tissue/venous oxygen saturation” this card would be correct. Overall, I think this conversation is mostly moot as the board prep resources I originally reference compare mixed venous O2 saturation which is consistently denoted “SvO2” (see AMBOSS and UWorld QIDs above). If the AnKing deck is intended as a “board prep” resource, it should strive to use the terminology of board prep resources. References: CPP factors and calculations Coronary Perfusion Pressure - StatPearls - NCBI Bookshelf … another relevant UWorld QID #26982