title: Determinants of cardiac disease in newly diagnosed patients with acromegaly: results of a 10 year survey study.
abstract: BACKGROUND
  The most frequent cause of death in acromegaly is cardiomyopathy.
  
  
  OBJECTIVE
  To evaluate determinants of acromegalic cardiomyopathy.
  
  
  METHODS
  Observational, open, controlled, retrospective study.
  
  
  METHODS
  Two hundred and five patients with newly diagnosed active acromegaly (108 women and 97 men; median age 44 years) and 410 non-acromegalic subjects sex- and age-matched with the patients.
  
  
  METHODS
  Left ventricular (LV) mass index (LVMi), transmitral inflow early-to-atrial (E/A) peak velocity ratio, and LV ejection fraction (LVEF) were measured by Doppler echocardiography to determine the prevalence of LV hypertrophy (LVH), diastolic and systolic dysfunction. The role of age, estimated disease duration, body mass index, GH and IGF1 levels, systolic and diastolic blood pressure, lipid profile and glucose tolerance in determining different features of the acromegalic cardiomyopathy was investigated.
  
  
  RESULTS
  Compared with controls, the patients had lower E/A, LVEF, high-density lipoprotein (HDL)-cholesterol levels and higher LVMi, total- and low-density lipoprotein (LDL)-cholesterol, triglycerides, glucose and insulin levels, homeostatic model assessment of insulin resistance (HOMA-R) and HOMA-β. The relative risk to develop mild (odds ratio (OR)=1.67 (1.05-2.66); P=0.027) or severe hypertension (OR=1.58 (1.04-2.32); P=0.027), arrhythmias (OR=4.93 (1.74-15.9); P=0.001), impaired fasting glucose/impaired glucose tolerance (OR=2.65 (1.70-4.13); P<0.0001), diabetes (OR=2.14 (1.34-3.40); P=0.0009), LVH (OR=11.9 (7.4-19.5); P<0.0001), diastolic (OR=3.32 (2.09-5.31); P<0.0001) and systolic dysfunction (OR=14.2 (6.95-32.2); P<0.0001), was higher in acromegaly. The most important predictor of LVH (t=2.4, P=0.02) and systolic dysfunction (t=-2.77, P=0.006) was disease duration and that of diastolic dysfunction was patient's age (t=-3.3, P=0.001). Patients with an estimated disease duration of >10 years had a relative risk to present cardiac complications three times higher than patients with estimated disease duration ≤5 years.
  
  
  CONCLUSIONS
  The prevalence of different features of cardiomyopathy is 3.3-14.2 times higher in the acromegalic than in the non-acromegalic population. The major determinant of cardiomyopathy is disease duration.
authors.affiliation: Section of Endocrinology, Department of Molecular and Clinical Endocrinology and Oncology, University Federico II of Naples, via S. Pansini 5, 80131 Naples, Italy. colao@unina.it
authors.forename: Annamaria
authors.initials: A
authors.lastname: Colao
authors.forename: Rosario
authors.initials: R
authors.lastname: Pivonello
authors.forename: Ludovica Francesca Stella
authors.initials: LF
authors.lastname: Grasso
authors.forename: Renata Simona
authors.initials: RS
authors.lastname: Auriemma
authors.forename: Mariano
authors.initials: M
authors.lastname: Galdiero
authors.forename: Silvia
authors.initials: S
authors.lastname: Savastano
authors.forename: Gaetano
authors.initials: G
authors.lastname: Lombardi
mesh_terms: D000172:Acromegaly / Q000175:diagnosis* / Q000453:epidemiology* / Q000378:metabolism; D000328:Adult; D015331:Cohort Studies; D005260:Female; D006306:Health Surveys / Q000639:trends*; D006331:Heart Diseases / Q000175:diagnosis* / Q000453:epidemiology* / Q000378:metabolism; D006801:Humans; D017379:Hypertrophy, Left Ventricular / Q000175:diagnosis / Q000453:epidemiology / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013997:Time Factors