Table 2.

Adverse Event Classification

Low	Trivial	No change in condition, may require monitoring with no intervention
	Minor	Transient change in condition, not life threatening, condition returns to baseline, requires monitoring, minor intervention as holding a medication or a laboratory test
High	Moderate	Transient change in condition may be life threatening if not treated, requires intervention as medication, ICU monitoring or moderate transcatheter procedure
	Major	Change in condition that may be permanent, life threatening if not treated, may require ICU, emergent readmit to the hospital, invasive monitoring or interventions such as DCCV, intubation or major transcatheter interventions to correct condition
	Catastrophic	Any death and emergent surgery or heart lung bypass support to prevent death with failure to wean from bypass support

DCCV indicates direct current cardioversion; ICU, intensive care unit.