Abstract

TOE is based on the physics of ultrasound where the image is shown by complex transformation of reflected sound signals into a mosaic of pixels in different gray shades.The normal audio frequency range of humans is between 20 to 20,000Hz. Frequency above 20,000Hz is referred to as ultrasound waves. Study design: Prospective observational study, Study population: Adult patients who underwent elective OPCAB procedure, Sample size: 83. The septal wall on assessment before grafting had dyskinetic, akinetic, severe hypokinetic and mild hypokinetic wall movement in 4 (6%), 9 (13%), 4 (6%) and 14 (19%) patients respectively. 41 (56%) patients had normokinetic wall movement. Following grafting there was improvement seen as 57 (80%) of patients had normokinetic wall movement. Only 1 (1%) patient had severe hypokinetic wall movement and 14 (19%) patients had mild hypokinesia. In the posterior wall dyskinesia, akinesia, severe hypokinesia and mild hypokinesia was seen in 4 (6%), 7 (10%), 6 (9%) and 14 (19%) patients respectively before grafting. Post grafting the wall movement improved such that only 2 (3%) patients had akinesia and 14 (19%) patients had hypokinesia. 56 (78%) patients had normokinetic wall movements.

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