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Renata S Auriemma, Rosario Pivonello, Ylenia Perone, Ludovica F S Grasso, Lucia Ferreri, Chiara Simeoli, Davide Iacuaniello, Maurizio Gasperi and Annamaria Colao


Cabergoline (CAB) has been found to be associated with increased risk of cardiac valve regurgitation in Parkinson's disease, whereas several retrospective analyses failed to detect a similar relation in hyperprolactinemic patients. The current study aimed at investigating cardiac valve disease before and after 24 and 60 months of continuous treatment with CAB only in patients with hyperprolactinemia.

Subjects and methods

Forty patients (11 men and 29 women, aged 38.7±12.5 years) newly diagnosed with hyperprolactinemia entered the study. Cumulative CAB dose ranged from 12 to 588 mg (median 48 mg) at 24 months and 48–1260 mg (median 149 mg) at 60 months. All patients underwent a complete trans-thoracic echocardiographic examination. Valve regurgitation was assessed according to the American Society of Echocardiography.


At baseline, the prevalence of trace mitral, aortic, pulmonic, and tricuspid regurgitations was 20, 2.5, 10, and 40% respectively, with no patient showing clinically relevant valvulopathy. After 24 months, no change in the prevalence of trace mitral (P=0.78) and pulmonic (P=0.89) regurgitations and of mild aortic (P=0.89) and tricuspid (P=0.89) regurgitations was found when compared with baseline. After 60 months, the prevalence of trace tricuspid regurgitation was only slightly increased when compared with that after 24 months (37.5%; P=0.82), but none of the patients developed significant valvulopathy. No correlation was found between cumulative dose and prevalence or grade of valve regurgitation at both evaluations. Prolactin levels normalized in all patients but one.


CAB does not increase the risk of significant cardiac valve regurgitation in prolactinomas after the first 5 years of treatment.

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Renata S Auriemma, Rosario Pivonello, Maria Cristina De Martino, Giuseppe Cudemo, Ludovica F S Grasso, Mariano Galdiero, Ylenia Perone and Annamaria Colao


To evaluate the effects of short- and long-term treatment with pegvisomant (PEG) on arrhythmias in acromegalic patients resistant to long-term, high-dose therapy with somatostatin analogs (SA).

Materials and methods

Thirteen patients entered the study. All patients started PEG at initial dose of 10 mg daily and then titrated to 5 mg every 6 weeks on the basis of IGF1. A standard 24-h electrocardiography registration was performed in all patients at baseline and after 6 and 18 months of PEG to evaluate: mean (HR), maximum (MHR), and minimum (mHR) heart rate; pauses number (P) and duration (PD); supraventricular episodes (SEs) number and duration (SED); and ventricular ectopic beats (EB) number and duration (EBD). Left ventricular mass (LVM) was also evaluated by standard echocardiography.


A slight but not significant decrease in HR, MHR, and mHR was observed after 6-month PEG, whereas a significant decrease in HR (P=0.03), MHR (P=0.05), and mHR (P=0.05) was found after 18-month PEG compared with baseline. LVM significantly (P=0.05) correlated with MRH (r=−0.50) after short-term treatment, and with HR (r=−0.54) and mHR (r=−0.55) after long-term treatment. Long-term PEG induced the complete recovery of arrhythmias recorded at baseline in one patient and the improvement of rhythm disorders developed after 6-month therapy in another patient. The prevalence of conduction disturbances passed from 15 to 7.7% after long-term PEG.


Long-term treatment with PEG reduces HR, MHR, and mHR and improves rhythm abnormalities in acromegaly.