Complex sentence: However, after being taken to Cheltenham general hospital, his condition deteriorated and he lapsed into unconsciousness and a brain scan revealed a blood clot had formed on the left-hand side of his brain.
Split into simpler sentences: However, after being taken to Cheltenham general hospital, his condition deteriorated and he lapsed into unconsciousness. A brain scan revealed a blood clot had formed on the left-hand side of his brain.