Procedure. Exercise is performed on a treadmill. The leads of the Ecg are placed on the chest wall. The treadmill is started at 2.74km/hr (1.7mph) & at an inclined gradient of 10% After 3 min incline of the treadmill is increased by 2%, and the speed increases .
Which protocol is used for the treadmill test?
The most common protocol used during treadmill exercise stress testing is the Bruce protocol. This protocol is divided into successive 3-minute stages, each of which requires the patient to walk faster and at a steeper grade.
What are the stages of the Bruce protocol?
In the standard Bruce protocol, the starting point (ie, stage 1) is 1.7 mph at a 10% grade (5 METs). Stage 2 is 2.5 mph at a 12% grade (7 METs). Stage 3 is 3.4 mph at a 14% grade (9 METs). This protocol includes 3-minute periods to allow achievement of a steady state before workload is increased.
When does Bruce protocol stop?
Stopping the test In clinical practice, patients rarely exercise for the full duration (21 minutes) of the Bruce protocol. However, completion of 9-12 minutes of exercise or reaching 85% of the maximum predicted changes in heart rate is usually satisfactory.
How accurate is the Bruce treadmill test?
Data gathered from each protocol demonstrated that the usage of the ramped Bruce protocol achieved more consistent results in comparison across all BMI groups in achieving 80%–85% of their age-predicted maximum heart rate.
Do you use a treadmill during a nuclear stress test?
A nuclear stress test is done along with an exercise stress test, in which you walk on a treadmill. If you aren’t able to exercise, you’ll receive a drug through an IV that mimics exercise by increasing blood flow to your heart.
How many stages in a Bruce Protocol?
The modified Bruce protocol has 2 warmup stages, each lasting 3 minutes. The first is at 1.7 mph and a 0% grade, and the second is at 1.7 mph and a 5% grade. This protocol it is most often used in older individuals or those whose exercise capacity is limited by cardiac disease.
What is Bruce Protocol exercise stress test?
In a clinical setting, the Bruce treadmill test protocol is sometimes called a stress test or exercise tolerance test. The test can be used to estimate maximal oxygen uptake (VO2 max), which is a measure of an athlete’s capacity to performed sustained exercise. It is linked to aerobic endurance.
What is Bruce Protocol?
Bruce protocol. The Bruce protocol is a diagnostic test used in the evaluation of cardiac function, developed by Robert A. Bruce .
What is modified Bruce Protocol?
The modified Bruce protocol is an alteration in the protocol so that the treadmill is initially horizontal rather than uphill, with the first few intervals increasing the treadmill slope only.
