Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Portuguese 
Hindi 
+44 28 3718 0055Journal of Sleep Disorders: Treatment and CareISSN: 2325-9639
Fernando Flexa Ribeiro-Filho Author
Subjects of specialization
Affiliation
Clinical Endocrinology, Clinical Endocrinology, Sleep Medicine
Department of Medicine, Division of Endocrinology, Universidade Federal do Par
Biography
Fernando Flexa Ribeiro-Filho is Graduated in Medicine from the Federal University of Pará (UFPA) (1995), specialist in Internal Medicine and Endocrinology, with a master's degree (2000), doctorate (2002) and post-doctorate (2009) in Medicine, area of ??expertise in Clinical Endocrinology, by Federal University of São Paulo (UNIFESP). He has professional experience in Clinical Endocrinology and Endocrinology. He is currently Adjunct Professor at the State University of Pará (UEPA).
Publications
Research Article Subscription
Sleep Hypoxemia and Urinary Free Cortisol in Patients with Obstructive Sleep Apnea
Author(s): Suelem Izumi, Fernando Flexa Ribeiro-Filho, Glaucia Carneiro, Sonia M Togeiro, Sergio Tufik and Maria Teresa Zanella
Objective: This study evaluated the influence of obstructive sleep apnea (OSA) on hypothalamic–pituitary–adrenal (HPA) axis aiming to identify the polysomnographic data associated with cortisol abnormalities.
Methods: Forty-one men referred for suspected OSA underwent polysomnography and were classified according to the apneahypopnea index (AHI) into control group (n=16) and OSA group (n=25). The assessment of the HPA axis function included low-dose (0.25 mg) dexamethasone suppression test, the circadian rhythm of salivary cortisol secretion and the measurement of urinary free cortisol (UFC) excretion in a 24-hour urine collection.
Results: No differences were found be... view more»
Google Scholars / Researchers Sites
