The near perfect performance earned her a score of 98.833 and her second gold medal after she retained her technical solo title on Monday.
Spain's Gemma Mengual pushed her hard with an excellent routine to a bluesy version of Yesterday sang by Ray Charles.
Italy's Beatrice Adelizzi took bronze after throwing the home crowd into raptures with a tear-jerking routine to opera.
"My performance was perfect, the result of a lot of training and commitment," Ishchenko told reporters.
(Published 23 July 2009, 17:53 IST)
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