Prevalence of obstructive sleep apnea in patients with prolactinoma before and after treatment with dopamine agonists.

Abstract

OBJECTIVES:

Obesity is the main risk factor for the development of obstructive sleep apnea (OSA). Hyperprolactinemia has also been related to obesity. To determine the OSA prevalence in patients with prolactinoma before and after dopamine agonist (DA) and to evaluate the correlation between the apnea-hypopnea index (AHI) and prolactin levels, body mass index (BMI), waist circumference (WC), visceral fat volume (VFV), subcutaneous fat volume, and other metabolic parameters.

METHODS:

Thirty-five patients with prolactinoma at baseline and twenty-one who completed the 6-month DA treatment were submitted to clinical/laboratorial evaluations, polysomnography and abdominal imaging.

RESULTS:

Before treatment, the prevalence of obesity/overweight and OSA were, respectively, 68.5 and 34.2 %. We found a positive correlation between AHI and weight (r = 0.57; p < 0.001), BMI (r = 0.56; p < 0.001), WC (r = 0.61; p < 0.001), VFV (r = 0.55; p = 0.002), insulin levels (r = 0.57; p < 0.001), and HOMA-IR index (r = 0.57; p < 0.001); and a negative correlation between AHI and HDL-cholesterol (r = -0.47; p = 0.005). After multivariate analysis, VFV and insulin levels were the most important predictors for AHI (p = 0.001 and p = 0.02, respectively). After DA, the obesity/overweight and OSA prevalence did not change.

CONCLUSIONS:

The OSA prevalence in patients with prolactinoma is similar to the obese subjects and did not change after treatment. Higher BMI and visceral obesity, but not prolactin levels, seem to be the major factor involved in the occurrence of OSA in these patients.

• Authors: Flávia Regina Pinho Barbosa, Cintia Marques dos Santos Silva, Giovanna Aparecida Balarini Lima, Giovanna Aparecida Balarinni Lima, Leila Warszawski, Romeu Cortes Domingues, Michele Dominic, Rosita Fontes, Leonardo Vieira Neto, Mônica Roberto Gadelha
• Journal: Pituitary (Pituitary) Vol. 17 Issue 5 Pg. 441-9 (Oct 2014) ISSN: 1573-7403 [Electronic] United States
• PMID: 24068456 (Publication Type: Controlled Clinical Trial, Journal Article)

Chemical References

• Dopamine Agonists
• Prolactin

Topics

• Adult
• Aged
• Body Mass Index
• Dopamine Agonists (pharmacology, therapeutic use)
• Female
• Humans
• Hyperprolactinemia (drug therapy, epidemiology)
• Male
• Middle Aged
• Prolactin (blood)
• Prolactinoma (blood, complications, drug therapy, epidemiology)
• Sleep Apnea, Obstructive (blood, complications, drug therapy, epidemiology)
• Waist Circumference (drug effects)
• Young Adult