22. Modified Bruce: 2 minute intervals ½ stages Speed is constant grade increases. Naughton Protocol: 2 minute interval at 2 mph with grade changes 0%, 3.5%, 7%, 10.5%, 14%, 17.5%, 20%. These protocols are important in a setting of Post-MI( 5 TH or 6 th day on discharge)
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25. ST Depression - Represents subendocardial ischemia -Abnormal > 1mm horizontal/downsloping at .08sec past “J” point.
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28. Thallium MPI Prep MI ruled out by cardiac markers NPO 6-12 hrs, NO CAFFEINE 24 hrs Wgt. <350 lbs. Consent IV access (peripheral preferred) No nuclear scans 24 hrs.(V/Q, bone) Be able to lie flat with hands behind head for 15 mins. x 2 Must be able to walk treadmill Notify if ICD present Pregnancy test for premenopausal women