Relative indications for test termination (Select all that apply):
Marked ST displacement (horizontal or downsloping of >2 mm, measured 60 to 80 ms after the J point [the end of the QRS complex]) in a patient with suspected ischemia (in the absence of baseline ECG findings that interfere with repolarization such as a bundle branch block or LVH).
Drop in systolic blood pressure >10 mm Hg (persistently below baseline) despite an increase in workload, in the absence of other evidence of ischemia.
Increasing chest pain.
Fatigue, shortness of breath, wheezing, leg cramps, or claudication.
Arrhythmias other than sustained VT, including multifocal ectopy, ventricular triplets, supraventricular tachycardia, and bradyarrhythmias that have the potential to become more complex or to interfere with hemodynamic stability.
Exaggerated hypertensive response (systolic blood pressure >250 mm Hg or diastolic blood pressure >115 mm Hg).
Development of bundle-branch block that cannot immediately be distinguished from VT.
If there is affirmative confirmation of high-quality pulse oximeter plethysmography tracing, hypoxemia with oxygen saturation of <85%.