Sleep apnoea syndrome is highly prevalent in acromegaly and only partially reversible after biochemical control of the disease.
BACKGROUND
Whether sleep apnoea syndrome (SAS) subsides after biochemical and clinical remission of acromegaly is controversial.


OBJECTIVE
To assess the presence of SAS in a cohort of acromegalic patients, which included a subgroup with active disease and a subgroup in remission, and to evaluate clinical and biochemical independent predictors of SAS.


METHODS
Cross-sectional and longitudinal study.


METHODS
Italian university department of internal medicine.


METHODS
About 36 acromegalic patients: 18 active and 18 controlled.


METHODS
Polysomnography was performed in all patients and repeated in six with active acromegaly and SAS after achieving disease control. Echocardiographic parameters were also measured.


RESULTS
The prevalence of SAS was 47% in the overall acromegalic population: 56% in the active group and 39% in the controlled one. In a multivariate analysis IGF1, male gender, age, body mass index, and disease duration were associated with SAS. Impaired glucose tolerance or diabetes was more prevalent in patients with SAS, particularly in the severe cases. Among the six patients of the longitudinal study, five showed improvement of SAS, but none recovered. No correlation was found between echocardiographic parameters and severity of SAS.


CONCLUSIONS
SAS can persist after recovery of acromegaly in several patients. Given the negative prognostic significance of this respiratory disorder, polysomnography should be included as routine procedure in the work-up of the acromegaly, even if in remission, being mandatory in those patients considered at high risk (elderly males, overweight, diabetic). Appropriate intensive treatment should be implemented to minimize the clinical impact of SAS in acromegaly.
Davi'
Maria Vittoria
MV
Clinic of Internal Medicine D, Department of Biomedical and Surgical Sciences, University of Verona, Policlinico GB Rossi, Verona, Italy. mariavittoria.davi@azosp.vr.it
Dalle Carbonare
Luca
L
Giustina
Andrea
A
Ferrari
Marcello
M
Frigo
Anna
A
Lo Cascio
Vincenzo
V
Francia
Giuseppe
G