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Dobutamine Stress Echo: Difference between revisions
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DSE to assess regional wall motion disorders | ==DSE to assess regional wall motion disorders== | ||
A stress echo is a test in which the position of the LV is looked at during rest and during exercise. The heart is charged by means of dobutamine intravenously. Dobutamine is a catecholamine with predominant β - receptor stimulator in which positive inotropic, chronotropic and dromotropic effects are caused in the heart. Dobutamine has a half-life of approximately 2 minutes. The inotropic and chronotropic effects induce myocardial ischemia by significantly narrowing the coronary artery. Echocardiography than regional wall motion detects disorders. DSE is also used to detect contractile reserve on myocardial damage after infarction. The reliability board for detecting coronary stenosis DSE is to compare myocardial perfusion scintigraphy and it is far superior to exercise ECG. | |||
At maximum heart rate are again | Advance is first made with the echo resting platelets: A PLAX, PSAX pm, AP4Ch and AP2Ch. | ||
During the run of Dobutamine the heart is properly monitored using a 12 -channel ECG and blood pressure. With each increase in dose dobutamine (every 3 minutes see Table below) ECG and blood pressure is measured. The research is safe, but can cause symptoms such as: palpitations, chest pain, dizzy or light present in the head. The Dobutamine is stopped when reaching the [http://csecho.ca/cardiomath/?eqnHD=stress&eqnDisp=mphrage maximum heart rate] [(220 - age) x 0.85], severe complications or incidents, demonstrable new regional wall motion in more than one segment or an increase in end-systolic volume. In some cases the maximum heart rate has not been achieved, there may be need in the next Dobutamine, 0.25mg atropine co-administered with a maximum of 1 mg (at intervals of 1 minute). | |||
At maximum heart rate echo recordings are again made. Another PLAX, PSAX pm, AP4Ch and AP2Ch, are made exactly like the rest plates (otherwise do not compare the recordings with each other) that requires only routine of the sonographer. Then ensure that the heart rate is slow again.<cite>1</cite> | |||
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