ObjectiveTo investigate the risk of cardiac valve regurgitation in patients with pituitary prolactinoma treated with bromocriptine for a long time. MethodsBetween January 2012 and February 2013, 26 pituitary prolactinoma patients treated with bromocriptine for at least 6 months were included in the observation group, and 101 healthy people were regarded as the control group. Transthoracic echocardiography were performed on these patients for cardiac regurgitation, and the echocardiographic data were compared between the two groups. ResultsTrace tricuspid regurgitation was presented in 38.46% of patients in the observation group, and 19.80% of the controls (P=0.046). Interventricular septum thickness was (8.62±0.31) mm in patients in the observation group, and it was (8.57±0.12) mm in the controls (P=0.042). ConclusionNo clinical significant cardiac valve regurgitation has been observed in pituitary prolactinoma patients treated by bromocriptin for a long time. Long-term echocardiographic follow-up of these patients is necessary.