No specific preventive measures are available. If you know your child is prone to breath holding spells, you might try to distract him or her before the behavior reaches the point that typically provokes a spell.
Dalton R, Boris NW. Disruptive behavioral disorders. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 28.