Some of the patients we are seeing are having significant cardiac complications that could be Cytokine Storm, Myocarditis, or Kakotsubo like cardiomyopathy requiring VA. Others primarily need VV but may be on high pressor requirments that preclude VV. Generally pressor requirments go down once VV is initiated due to improved oxygenation however some are still crashing so VA is safer. Some are post arrest.
Some of it is chicken or the egg, do they just happen to be COVID positive or is COVID an instigating factor for MI or worsening HF