This is a medical malpractice action in which the primary issue on appeal is whether the trial court committed reversible error by refusing to instruct the jury that if it found that the hospital had violated certain hospital protocols, it could consider the violations evidence of negligence. The events giving rise to the action took place within a four day period. On August 8, 1981, Leslie Bell began experiencing premature labor contractions. At the time, she was between twenty-four and twenty-six weeks pregnant. She was admitted to the Maricopa County Medical Center, where she was treated with the drug terbutaline to stop the contractions. The drug was administered intravenously, subcutaneously, and orally over a twenty-four hour period.