Which of the following is NOT a criterion for urgent catheterization?

In the context of urgent catheterization, it is vital to understand the criteria that signify a need for immediate intervention. The presence of low cardiac enzyme levels, in this case, does not indicate a significant risk of myocardial infarction (MI) or ischemia that would warrant urgent catheterization. While elevated cardiac enzymes such as troponins or CK-MB are markers of myocardial injury, low levels do not correlate with critical cardiac events requiring immediate treatment.

In contrast, factors like age over 65 years, significant ST depression on the EKG, and experiencing multiple anginal events within a short time frame are recognized risk indicators. They suggest a higher probability of acute coronary syndrome or severe obstructive coronary artery disease, which makes urgent catheterization necessary to prevent potential complications. Thus, low cardiac enzyme levels are not a relevant criterion for determining the urgency of catheterization.