Biomedical Technologies


Biomedical Technologies logoSubject: Biology    Exam: CMC Vellore

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Important Points

Techniques and instruments which are free from risk of injury to body are called noninvasive, e.g., ECG, EEG, EPs, autoanalyser, MRI, sonography.
Electrocardiograph is a noninvasive instrument employed to record myo-electrical changes during cardiac cycle. Electrocardiogram is the recording of electrical potential produced during cardiac cycle from initiation and spread of cardiac impulse from SA node to AV node, AV bundle and Purkinje fibres.

Intra-Aortic Balloon Pump
It is meant for improving blood supply to heart walls and other organs. A small balloon is positioned in the descending thoracic aorta. It is connected to an external machine which can inflate (with helium) and deflate it rhythmically.
It is a technique of opening a blocked coronary artery through ballooning. The process is called percutaneous transluminal coronary angioplasty (PTCA). Coronary artery-bypass surgery (CAS) is Resorted to when the main left coronary artery or three-vessel coronary artery is blocked.
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