Serum levels of vitamin A, visual function and ocular surface after bariatric surgery

Detalhes bibliográficos
Autor(a) principal: BRANDÃO,Luana Paula Nogueira de Araújo
Data de Publicação: 2017
Outros Autores: VILAR,Lucio, CAVALCANTI,Bernardo Menelau, BRANDÃO,Pedro Henrique Amorim, ARANTES,Tiago Eugênio Faria e, CAMPOS,Josemberg Marins
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Arquivos de gastroenterologia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-28032017000100065
Resumo: ABSTRACT BACKGROUND Bariatric surgery is the most effective treatment for severe obesity, but the surgery increases the risk of developing nutritional deficiencies, such as vitamin A deficiency. In human metabolism, vitamin A plays a role in vision. OBJECTIVE To evaluate serum vitamin A, visual function and ocular surface of patients undergoing bariatric surgery. METHODS A cross-sectional and analytical study was conduced with 28 patients undergoing bariatric surgery for at least 6 months. Ophthalmologic evaluation was done through color vision test, contrast sensitivity test, ocular surface tests and confocal microscopy, as well as vitamin A serum measurement. RESULTS Vertical sleeve gastrectomy was performed in seven (25.0%) patients and Roux -en-Y gastric by-pass in 21 (75.0%). Mean serum vitamin A level was 1.7±0.5 µmoL/L. Most patients (60.7%) had symptoms of dry eye. Five (17.9%) patients had contrast sensitivity impairment and 18 (64.3%) color vision changes. In the group of patients undergoing Roux -en-Y gastric by-pass , mean vitamin A levels were 1.8±0.6 µmoL/L, whereas they were 1.7±0.5 µmoL/L in patients submitted to the restrictive technique vertical sleeve gastrectomy . The analysis of the influence of serum levels of vitamin A in the visual function and ocular surface was performed by Pearson correlation test and there was no significant correlation between any of the variables and vitamin A. CONCLUSION There was no influence of the bariatric surgery technique used on serum vitamin A levels, on the visual function or on the ocular surface. Moreover, there was no correlation between serum levels of vitamin A and the visual function or the ocular surface changes.
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spelling Serum levels of vitamin A, visual function and ocular surface after bariatric surgeryBariatric surgeryVitamin A deficiencyNight blindnessXerophthalmiaABSTRACT BACKGROUND Bariatric surgery is the most effective treatment for severe obesity, but the surgery increases the risk of developing nutritional deficiencies, such as vitamin A deficiency. In human metabolism, vitamin A plays a role in vision. OBJECTIVE To evaluate serum vitamin A, visual function and ocular surface of patients undergoing bariatric surgery. METHODS A cross-sectional and analytical study was conduced with 28 patients undergoing bariatric surgery for at least 6 months. Ophthalmologic evaluation was done through color vision test, contrast sensitivity test, ocular surface tests and confocal microscopy, as well as vitamin A serum measurement. RESULTS Vertical sleeve gastrectomy was performed in seven (25.0%) patients and Roux -en-Y gastric by-pass in 21 (75.0%). Mean serum vitamin A level was 1.7±0.5 µmoL/L. Most patients (60.7%) had symptoms of dry eye. Five (17.9%) patients had contrast sensitivity impairment and 18 (64.3%) color vision changes. In the group of patients undergoing Roux -en-Y gastric by-pass , mean vitamin A levels were 1.8±0.6 µmoL/L, whereas they were 1.7±0.5 µmoL/L in patients submitted to the restrictive technique vertical sleeve gastrectomy . The analysis of the influence of serum levels of vitamin A in the visual function and ocular surface was performed by Pearson correlation test and there was no significant correlation between any of the variables and vitamin A. CONCLUSION There was no influence of the bariatric surgery technique used on serum vitamin A levels, on the visual function or on the ocular surface. Moreover, there was no correlation between serum levels of vitamin A and the visual function or the ocular surface changes.Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE. 2017-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-28032017000100065Arquivos de Gastroenterologia v.54 n.1 2017reponame:Arquivos de gastroenterologia (Online)instname:Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologiainstacron:IBEPEGE10.1590/s0004-2803.2017v54n1-13info:eu-repo/semantics/openAccessBRANDÃO,Luana Paula Nogueira de AraújoVILAR,LucioCAVALCANTI,Bernardo MenelauBRANDÃO,Pedro Henrique AmorimARANTES,Tiago Eugênio Faria eCAMPOS,Josemberg Marinseng2017-05-24T00:00:00Zoai:scielo:S0004-28032017000100065Revistahttp://www.scielo.br/aghttps://old.scielo.br/oai/scielo-oai.php||secretariaarqgastr@hospitaligesp.com.br1678-42190004-2803opendoar:2017-05-24T00:00Arquivos de gastroenterologia (Online) - Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologiafalse
dc.title.none.fl_str_mv Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
title Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
spellingShingle Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
BRANDÃO,Luana Paula Nogueira de Araújo
Bariatric surgery
Vitamin A deficiency
Night blindness
Xerophthalmia
title_short Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
title_full Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
title_fullStr Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
title_full_unstemmed Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
title_sort Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
author BRANDÃO,Luana Paula Nogueira de Araújo
author_facet BRANDÃO,Luana Paula Nogueira de Araújo
VILAR,Lucio
CAVALCANTI,Bernardo Menelau
BRANDÃO,Pedro Henrique Amorim
ARANTES,Tiago Eugênio Faria e
CAMPOS,Josemberg Marins
author_role author
author2 VILAR,Lucio
CAVALCANTI,Bernardo Menelau
BRANDÃO,Pedro Henrique Amorim
ARANTES,Tiago Eugênio Faria e
CAMPOS,Josemberg Marins
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv BRANDÃO,Luana Paula Nogueira de Araújo
VILAR,Lucio
CAVALCANTI,Bernardo Menelau
BRANDÃO,Pedro Henrique Amorim
ARANTES,Tiago Eugênio Faria e
CAMPOS,Josemberg Marins
dc.subject.por.fl_str_mv Bariatric surgery
Vitamin A deficiency
Night blindness
Xerophthalmia
topic Bariatric surgery
Vitamin A deficiency
Night blindness
Xerophthalmia
description ABSTRACT BACKGROUND Bariatric surgery is the most effective treatment for severe obesity, but the surgery increases the risk of developing nutritional deficiencies, such as vitamin A deficiency. In human metabolism, vitamin A plays a role in vision. OBJECTIVE To evaluate serum vitamin A, visual function and ocular surface of patients undergoing bariatric surgery. METHODS A cross-sectional and analytical study was conduced with 28 patients undergoing bariatric surgery for at least 6 months. Ophthalmologic evaluation was done through color vision test, contrast sensitivity test, ocular surface tests and confocal microscopy, as well as vitamin A serum measurement. RESULTS Vertical sleeve gastrectomy was performed in seven (25.0%) patients and Roux -en-Y gastric by-pass in 21 (75.0%). Mean serum vitamin A level was 1.7±0.5 µmoL/L. Most patients (60.7%) had symptoms of dry eye. Five (17.9%) patients had contrast sensitivity impairment and 18 (64.3%) color vision changes. In the group of patients undergoing Roux -en-Y gastric by-pass , mean vitamin A levels were 1.8±0.6 µmoL/L, whereas they were 1.7±0.5 µmoL/L in patients submitted to the restrictive technique vertical sleeve gastrectomy . The analysis of the influence of serum levels of vitamin A in the visual function and ocular surface was performed by Pearson correlation test and there was no significant correlation between any of the variables and vitamin A. CONCLUSION There was no influence of the bariatric surgery technique used on serum vitamin A levels, on the visual function or on the ocular surface. Moreover, there was no correlation between serum levels of vitamin A and the visual function or the ocular surface changes.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-28032017000100065
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-28032017000100065
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s0004-2803.2017v54n1-13
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE.
publisher.none.fl_str_mv Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE.
dc.source.none.fl_str_mv Arquivos de Gastroenterologia v.54 n.1 2017
reponame:Arquivos de gastroenterologia (Online)
instname:Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia
instacron:IBEPEGE
instname_str Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia
instacron_str IBEPEGE
institution IBEPEGE
reponame_str Arquivos de gastroenterologia (Online)
collection Arquivos de gastroenterologia (Online)
repository.name.fl_str_mv Arquivos de gastroenterologia (Online) - Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia
repository.mail.fl_str_mv ||secretariaarqgastr@hospitaligesp.com.br
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