Bruce protocol

The Modified Bruce protocol starts at a lower workload than the standard test and is typically used for elderly or sedentary patients.

The Bruce protocol is a diagnostic test used in the evaluation of cardiac function, developed by Robert A. Bruce.

Individuals could be placed on a treadmill and be "stressed" by the "Bruce protocol" and when near peak performance, could be injected with thallium-201.

Table I shows the excellent preservation of left ventricular ejection fraction in the long term in the surviving patients: 11 of 14 patients performed more than 9 minutes of exercise with the standard Bruce protocol at the time of their most recent annual review (1991-2).