Overview – TMT Overview
Treadmill test or TMT is the measurement of the heart’s ability to sustain stress given by exercise in a controlled environment. It is a cardiac stress test.
Why get a Treadmill Test done? – TMT Overview
The treadmill test is basically used to diagnose Coronary artery disease or in determining prognosis after Myocardial Infraction (commonly known as a heart attack) or angioplasty or bypass surgery (coronary revascularization)
Who should get a Treadmill Test done? – TMT Overview
If we have the symptoms suggesting angina, have a heart attack history, or have undergone angioplasty or bypass surgery
Precautions to be taken before undergoing a TMT? – TMT Overview
• we should avoid caffeine
• we should consult a doctor for Blood Pressure medicines if any (some BO medicines are needed to be stopped before)
• Skip a meal, can intake water.
• Check and make sure that our diabetes is normal
• If we are a health check-up case, we should practice brisk walking few days before the test
• In the case of asthama patients, we should carry along our asthma inhaler
Do we need to fast? – TMT Overview
Though drinking water is not a problem, it’s preferable not to eat before two hours of undergoing a TMT.
How much time does a TMT take? – TMT Overview
Though the test only lasts for around 12-20 minutes, the total time taken for a TMT is around 1 hour because of other preparations and procedures.
What is the average cost of Trademill Test? – TMT Overview
The average costing in India lies between Rs.1800 – Rs. 2500. The test needs no hospitalization as it is being carried out on an OPD basis.
How is a Treadmill Test performed? – TMT Overview
After checking our vitals and knowing our history, we are explained that the Treadmill machine gradually, every three minutes, increases speed and slop. Generally, adults achieve target heart rate in the first 9 minutes. Chest leads are applied (shaving the chestis preferable for better application of electrodes). In case of we feel chest pain, fatigue or breathlessness or the doctor finds ECG changes test can be stopped immediately.
What is the meaning of a Positive Test and a Negative Test? – TMT Overview
If our ECG shows changes of angina (heart not geting an adequate blood supply) after the workload, meaning that we are suffering from ischemic heart disease, the test is known to be a Positive Test
If there are no signs of ischemic heart disease, the heartget enough blood supply even after moderate or high workload, the TMT test is known as the Negative Test.
What are the risks involved in Treadmill Test? – TMT Overview
In extreme cases, there is only a 1% chance of exacerbation of angina, breathlessness, arrhythmia, or rarest – death. The test should only be carried out in presence of trained technicians or doctors.
What are the chances of a false positive or false negative?
The specificity of TMT ranges from 50% to 74% and the sensitivity of the Treadmill Test ranges from 73% to 90%.
TMT is conducted for whom? – TMT Overview
Anyone who :
• had a heart attack in last 48 hours
• has uncontrolled Blood Pressure (more than 200/110 mm hg)
• has unstable angina
• has uncontrolled rhythm disorder of the heart
• has Severe aortic stenosis, pulmonary embolism
• is acutely ill patient due to any cause
• advanced COPD.
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