LETTERS: PDF OnlyBALLOONING OPEN A STENOTIC VALVECULLEN, LAURA; LAXSON, CAROLYNAJN, American Journal of Nursing 88(7):p 987-992, July 1988. Free Abstract Angioplasty may free a stuck valve without open heart surgery, but the first 48 hours in an ICU can still be rocky. © Lippincott-Raven Publishers.