Attention deficit disorder and the effect of methylphenidate on attention, behavioral, and cardiovascular functioning

The effect of a 0.3 mg/kg dose of methylphenidate on attentional, behavioral, and cardiovascular measures in boys with attention deficit disorder (ADD) was examined. The results of double-blind clinical trials demonstrated a significant improvement in sustained attention and impulse control, as well as in ratings of social behavior by both teachers and parents. Consistent with previous research, cardiovascular functioning did not significantly increase as a function of methylphenidate. Due to the large intraindividual variability in cardiovascular response, careful monitoring of each patient's response is recommended.