Vocal Acoustic and Auditory-Perceptual Characteristics During Fluctuations in Estradiol Levels During the Menstrual Cycle: A Longitudinal Study.

Estradiol production varies cyclically, changes in levels are hypothesized to affect the voice. The main objective of this study was to investigate vocal acoustic and auditory-perceptual characteristics during fluctuations in the levels of the hormone estradiol during the menstrual cycle. A total of 44 volunteers aged between 18 and 45 were selected.

Effects of Weight Loss on Acoustic Parameters After Bariatric Surgery.

Background: Patients with morbid obesity may present vocal alterations, since large accumulation of fat in the vocal tract may interfere with voice production of these individuals.

Objective: Verify the neck circumference and the acoustic parameters of voice in obese women, before and after the bariatric surgery, and compare the results with a control group, with normal weight.

Methods: Observational, longitudinal, descriptive study with patients referred to the SCODE (Obesity Surgery and Related Disorders Center) in a university hospital.

Screening for Voice Disorders in Older Adults (Rastreamento de Alterações Vocais em Idosos-RAVI)-Part II: Validity Evidence and Reliability.

Purpose: To determine the validity evidence based on the internal structure and relations to other variables and the reliability of an epidemiologic questionnaire for screening older adults with voice disorders.

Study Design: This is a prospective, nonrandomized, cross-sectional, validation study.

Methods: To assess the validity evidence based on the internal structure, 160 older adults of both sexes, either community-dwelling or institutionalized, completed the "Rastreamento de Alterações Vocais em Idosos" (RAVI; "Screening for Voice Disorders in Older Adults").

Prevalence of voice disorders in the elderly: a systematic review of population-based studies.

Voice disorders can occur in the elderly as a result of natural anatomical and physiological changes or greater exposure to pathological conditions in the aging, affecting communication and quality of life. Nevertheless, data about the prevalence of voice disorders in this phase of life are not well known in a population-based perspective. The aim of the present systematic review was to identify the prevalence of vocal disorders in persons aged 60 years or more in population-based studies.

Electrical activity of extrinsic laryngeal muscles in subjects with and without dysphonia.

Objective: To compare dysphonic individuals to nondysphonic with regards to electrical activity of extrinsic laryngeal muscles related to perceptual and acoustic vocal parameters.

Hypothesis: Dysphonic individuals have higher electrical activity in the supra and infrahyoid muscles than those nondysphonic.

Study Design: Prospective, cross-sectional, case series study.

Effects of asthma in nutritional status in children: A systematic review.

Introduction: Asthma is a chronic inflammatory disease of high prevalence, considered a public health problem and is thought to be one cause of low birth weight and growth retardation.

Purpose: The purpose of this article was to review in literature the effects of asthma on the nutritional status in children.

Material And Methods: A systematic review was made by searching for articles in PubMed, SciELO and LILACS databases.