exercise nuc stress test

Question 1

exercise test key concpets

Answer 1

heart response to exercise» eval HR and BP

Question 2

what is MD evaluating

Answer 2

workload/ oxygen demand via rate pressure product (HR x systolic BP)

Question 3

contraindications

Answer 3

-uncontrolled/unexpected medical issues (angina, dizziness, hypoxic)
-severe aortic stenosis/ PE
-> 200/100 BP
-fixed rate pacemaker/ defibrillator
-new or unstable A-fib
-2nd/3rd degree AV block
-prosthesis, deaf, non english speaking

Question 4

types of duke treadmill score protocols we use

Answer 4

bruce and modified bruce for elderly patients

Question 5

considerations

Answer 5

-suboptimal exercise decreases diagnostic accuracy
->= 10 METS= dx stress test

Question 6

what does METS reflect

Answer 6

resting volume O2 consumption per minute (VO2) for 70 kg 40 yr old man w 1 MET= 3.5 mL/min/kg body weight

Question 7

what is VO2

Answer 7

resting volume O2 consumption per minute

Question 8

how do we calculate MET

Answer 8

using incline, speed, duration of exercise

Question 9

when do we end test early

Answer 9

-if >240/114 BP
-angina
-2nd or 3rd degree AV block
-dizzy/syncope
-V-tac/ frequen PVC’s
-elevated or depressed ST

Question 10

ST elevation greater than ____ indicates _____

Answer 10

1mm, MI

Question 11

ST depression greater than _____ indicates _____

Answer 11

2mm, ischemia

Question 12

how to calculate max HR

Answer 12

220-age x 85%

Question 13

what happens if a pt reaches 85% of their max HR but has no symptoms

Answer 13

continue test til pt experiences symptoms (pref)

Question 14

bruce protocol set up

Answer 14

-2 min warm up
-3 min stages
-limitaton if large increase in VO2

Question 15

modified bruce protocol set up

Answer 15

2-3 min warm up stages @ 1.7 mph at %0% and %5%