期刊
EUROPEAN JOURNAL OF ENDOCRINOLOGY
卷 168, 期 1, 页码 15-22出版社
BIOSCIENTIFICA LTD
DOI: 10.1530/EJE-12-0596
关键词
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Objective: 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. Results: 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. Conclusions: Long-term treatment with PEG reduces HR, MHR, and mHR and improves rhythm abnormalities in acromegaly. European Journal of Endocrinology 168 15-22
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