Serum levels of vitamin A, visual function and ocular surface after bariatric surgery
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
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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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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1754193348109795328 |