Complex sentence: A couple years of good fortune ended with multiple family difficulties and when he shattered his back in a serious fire, falling through several floors, and then had two medically induced heart-attacks when a physician twice administered a massive dose of muscle-relaxant.
Split into simpler sentences: A couple years of good fortune ended with multiple family difficulties and when he shattered his back in a serious fire, falling through several floors. He then had two medically induced heart-attacks when a physician twice administered a massive dose of muscle-relaxant.