Impaired left ventricular diastolic filling in patients with acromegaly: Assessment with radionuclide angiography(93 visite) Cuocolo A, Nicolai E, Fazio S, Pace L, Maurea S, Cittadini A, Sacca L, Salvatore M
Parole chiave: Acromegaly, Adult, Aged, Article, Clinical Article, Controlled Study, Diastole, Female, Heart Disease, Heart Left Ventricle Filling, Heart Left Ventricle Mass, Heart Stroke Volume, Human, Hypertension, Priority Journal, Scintiangiography, Two Dimensional Echocardiography, Gated Blood-Pool Imaging, Middle Age, Ventricular Function,
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Acromegaly is associated with increased cardiac morbidity and mortality, but it is not clear whether this is the result of a specific disease of heart muscle or of increased incidence of hypertension. Methods: Twenty-six patients with acromegaly (11 male and 15 female, mean age 45 ± 13 yr) and 15 and 12 age- and sex-matched normal controls underwent high temporal resolution radionuclide angiography and two-dimensional echocardiography at rest. Results: Normal controls and patients with acromegaly did not differ with respect to heart rate, ejection fraction, time to end systole, peak ejection rate (PER) and time to PER. In contrast, peak filling rate (PFR), normalized to end diastolic volume (EDV), or stroke volume (SV), or expressed as the ratio of PFR-to-PER was reduced (p < 0.01), time to PFR (TPFR) was prolonged (p < 0.01), and echocardiographic left ventricular mass index was higher (p < 0.001) in patients with acromegaly compared to normals. Patients with acromegaly were divided in normotensives (group 1, n = 17) and hypertensives (group 2, n = 9). Although left ventricular mass index was significantly (p < 0.01) higher in group 2 compared to group 1, PFR and time to PFR were not different between the two groups of acromegalic patients. In the entire group of patients with acromegaly significant relationships between left ventricular mass index and EDV/s (r = -0.56, p < 0.01), SV/s (r = -0.73, p < 0.001), and PFR/PER (r = -0.61, p < 0.001) were observed. Conclusion: Patients with acromegaly have impaired left ventricular diastolic filling at rest related to greater left ventricular mass index even in the absence of systemic hypertension
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