High dosage folic acid supplementation, oral cleft recurrence and fetal growth.

OBJECTIVES: To evaluate the effects of folic acid supplementation on isolated oral cleft recurrence and fetal growth. PATIENTS AND METHODS: The study included 2,508 women who were at-risk for oral cleft recurrence and randomized into two folic acid supplementation groups: 0.4 and 4 mg per day before pregnancy and throughout the first trimester. The infant outcome data were based on 234 live births. In addition to oral cleft recurrence, several secondary outcomes were compared between the two folic acid groups. Cleft recurrence rates were also compared to historic recurrence rates. RESULTS: The oral cleft recurrence rates were 2.9% and 2.5% in the 0.4 and 4 mg groups, respectively. The recurrence rates in the two folic acid groups both separately and combined were significantly different from the 6.3% historic recurrence rate post the folic acid fortification program for this population (p = 0.0009 when combining the two folic acid groups). The rate of cleft lip with palate recurrence was 2.9% in the 0.4 mg group and 0.8% in the 4 mg group. There were no elevated fetal growth complications in the 4 mg group compared to the 0.4 mg group. CONCLUSIONS: The study is the first double-blinded randomized clinical trial (RCT) to study the effect of high dosage folic acid supplementation on isolated oral cleft recurrence. The recurrence rates were similar between the two folic acid groups. However, the results are suggestive of a decrease in oral cleft recurrence compared to the historic recurrence rate. A RCT is still needed to identify the effect of folic acid on oral cleft recurrence given these suggestive results and the supportive results from previous interventional and observational studies, and the study offers suggestions for such future studies. The results also suggest that high dosage folic acid does not compromise fetal growth.

Oral cleft prevention program (OCPP).

BACKGROUND: Oral clefts are one of the most common birth defects with significant medical, psychosocial, and economic ramifications. Oral clefts have a complex etiology with genetic and environmental risk factors. There are suggestive results for decreased risks of cleft occurrence and recurrence with folic acid supplements taken at preconception and during pregnancy with a stronger evidence for higher than lower doses in preventing recurrence. Yet previous studies have suffered from considerable design limitations particularly non-randomization into treatment. There is also well-documented effectiveness for folic acid in preventing neural tube defect occurrence at 0.4 mg and recurrence with 4 mg. Given the substantial burden of clefting on the individual and the family and the supportive data for the effectiveness of folic acid supplementation as well as its low cost, a randomized clinical trial of the effectiveness of high versus low dose folic acid for prevention of cleft recurrence is warranted. METHODS/DESIGN: This study will assess the effect of 4 mg and 0.4 mg doses of folic acid, taken on a daily basis during preconception and up to 3 months of pregnancy by women who are at risk of having a child with nonsyndromic cleft lip with/without palate (NSCL/P), on the recurrence of NSCL/P. The total sample will include about 6,000 women (that either have NSCL/P or that have at least one child with NSCL/P) randomly assigned to the 4 mg and the 0.4 mg folic acid study groups. The study will also compare the recurrence rates of NSCL/P in the total sample of subjects, as well as the two study groups (4 mg, 0.4 mg) to that of a historical control group. The study has been approved by IRBs (ethics committees) of all involved sites. Results will be disseminated through publications and presentations at scientific meetings. DISCUSSION: The costs related to oral clefts are high, including long term psychological and socio-economic effects. This study provides an opportunity for huge savings in not only money but the overall quality of life. This may help establish more specific clinical guidelines for oral cleft prevention so that the intervention can be better tailored for at-risk women. CLINICALTRIALS.GOV IDENTIFIER: NCT00397917.

Frontonasal dysplasia: clinical evaluation on audiological and brainstem electrophysiological profiles.

UNLABELLED: Frontonasal dysplasia (FND) is a rare malformative complex affecting the frontal portion of the face, the eyes and the nose; it may occur singly or associated with other clinical signs. No systematic studies describing hearing in this condition were found. AIM: To evaluate hearing sensitivity and sound stimulus conduction from cochlea to brainstem in patients with clinical signs of FND. METHODS: 21 patients with isolated or syndromic FND were submitted to a clinical (otological/vestibular antecedents and otoscopy) and instrumental (pure tone and speech audiometry, tympanometry and brainstem auditory evoked response) hearing evaluation. DESIGN: A clinical, cross-sectional observational prospective study. RESULTS: Hearing thresholds were normal in 15 (70%) patients, abnormal in 5 (25%), mostly with conductive hearing loss; one patient did not cooperate with testing. The tympanometric curve was type A in 30 (72%) ears, type C in 5 (12%), type As in 4 (9%) and type B in 3 (7%). The auditory brainstem response (ABR) showed no abnormalities. CONCLUSION: Patients with FND showed no abnormalities in the auditory system from cochlea to brainstem in this study. Mild conductive hearing loss found in some is probably related to cleft palate. Further evaluation of hearing pathways at higher levels is recommended.

Frontonasal dysplasia: clinical evaluation on audiological and brainstem electrophysiological profiles / Displasia frontonasal: avaliação clínica e eletrofisiológica da audição

Frontonasal dysplasia (FND) is a rare malformative complex affecting the frontal portion of the face, the eyes and the nose; it may occur singly or associated with other clinical signs. No systematic studies describing hearing in this condition were found. AIM: To evaluate hearing sensitivity and sound stimulus conduction from cochlea to brainstem in patients with clinical signs of FND. METHODS: 21 patients with isolated or syndromic FND were submitted to a clinical (otological/vestibular antecedents and otoscopy) and instrumental (pure tone and speech audiometry, tympanometry and brainstem auditory evoked response) hearing evaluation. DESIGN: A clinical, cross-sectional observational prospective study. RESULTS: Hearing thresholds were normal in 15 (70 percent) patients, abnormal in 5 (25 percent), mostly with conductive hearing loss; one patient did not cooperate with testing. The tympanometric curve was type A in 30 (72 percent) ears, type C in 5 (12 percent), type As in 4 (9 percent) and type B in 3 (7 percent). The auditory brainstem response (ABR) showed no abnormalities. CONCLUSION: Patients with FND showed no abnormalities in the auditory system from cochlea to brainstem in this study. Mild conductive hearing loss found in some is probably related to cleft palate. Further evaluation of hearing pathways at higher levels is recommended.

A displasia frontonasal (DFN) representa um complexo malformativo que afeta os olhos, o nariz e a região frontal da face. Estudos específicos com o objetivo de estudar a audição na DFN não foram encontrados na literatura. OBJETIVO: Avaliar o sistema auditivo em indivíduos com DFN quanto à acuidade e condução do estímulo sonoro até o tronco encefálico. MATERIAL E MÉTODO: 21 pacientes na faixa etária de 7 a 42 anos, sendo 14 do sexo feminino e 7 do sexo masculino, com DFN isolada ou sindrômica, foram submetidos à anamnese, meatoscopia, imitanciometria, audiometria tonal liminar e potenciais evocados auditivos de tronco encefálico (PEATE). FORMA DE ESTUDO: Estudo de série clínico prospectivo. RESULTADOS: Limiares audiométricos normais em 15 (70 por cento) indivíduos e alterados em 5 (25 por cento), sendo perda auditiva condutiva na maior parte. Na timpanometria, 30 orelhas (72 por cento) apresentaram curva tipo A, 5 (12 por cento) tipo C, 4 (9 por cento) tipo Ar e 3 (7 por cento) tipo B. Os valores das latências absolutas e interpicos do PEATE foram normais. CONCLUSÕES: Não foram encontradas alterações na via auditiva até o tronco encefálico. As alterações condutivas são provavelmente relacionadas às patologias de orelha média decorrentes da fissura de palato. Sugerimos a avaliação de níveis mais altos dentro do sistema auditivo.

Gagueira e taquifemia: manifestações clínicas, diagnóstico diferencial e intervenção fonoaudiológica / Stuttering and cluttering: clinical manifestations, differential diagnosis and speech therapy intervention

Entre os distúrbios da fluência, a gagueira e a taquifemia, representam as duas principais patologias que podem ser confundidas, pois apresentam manifestações que são semelhantes. O artigo tem por objetivo apresentar manifestações que es clínicas da gagueira e da taquifemia, procedimentos da avaliação fonoaudiológica. Serão apresentada revisão teórica sobre manifestações clínicas, processo de avaliação, caracterí sticas do diagnóstico das patologias e intervenção dos distúrbios da fluênncia. Acreditamos que esta revisão bibliográfica associada aos quadros demonstrativos de aspectos diferenciais da gagueira e da taquifemia facilitarão a atuação dos fonoaudiólogos e profissionais afins no diagnóstico e na intervenção das desordens da fluência (AU)