reproducibility of water drinking test performed at different times of the day reprodutibilidade do teste de sobrecarga hídrica realizado em diferentes horários do dia

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ID: 183933
2009
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Abstract
PURPOSE: To evaluate the reproducibility of water drinking test (WDT) performed at different times of the day, in primary open angle glaucoma (POAG) patients and normal individuals. METHODS: Fifteen patients with POAG and 30 normal individuals underwent three WDTs at different times of the day (7 AM, 12 PM, and 5 PM) on 3 different days. Test results in POAG patients and normal individuals were compared. Agreement and correlation of intraocular pressure (IOP) baseline levels, peak levels, and IOP change (peak IOP - baseline IOP) on tests performed at different times were evaluated. Only right eye measurements were analyzed. RESULTS: Mean baseline IOP, peak IOP and IOP change were significantly higher in POAG patients than in normal individuals, at all time intervals (p<0.05). The Bland-Altman analysis demonstrated limits of agreement for IOP peak levels and IOP changes larger than the clinically acceptable (>3 mmHg), even though Pearson's test revealed good correlation among the results. CONCLUSION: The mean IOP peak and mean IOP change observed during WDT are significantly higher in POAG patients than in control individuals. Low levels of agreement among WDTs performed at different times of the day suggest a poor reproducibility of WDT, which may limit its applicability for the diagnosis and follow-up of glaucoma.
OBJETIVO: Avaliar a reprodutibilidade do teste de sobrecarga hídrica (TSH) em diferentes horários em que é realizado, em pacientes com glaucoma primário de ângulo aberto (GPAA) e em indivíduos normais. MÉTODOS: Quinze pacientes com GPAA e 30 indivíduos normais foram submetidos a três TSHs, realizados em diferentes horários do dia (às 7:00 h, 12:00 h e 17:00 h), em três dias diferentes. Foram comparados os resultados dos testes em pacientes com GPAA e indivíduos normais. Foram analisadas a concordância e a correlação entre os valores de medida basal, pico e variação de pressão intraocular (PIO) (pico de PIO - PIO basal) nos testes realizados nos diferentes horários. Apenas as medidas do olho direito foram analisadas. RESULTADOS: Os valores médios de medida basal, pico e variação de PIO foram significativamente maiores nos pacientes glaucomatosos que nos indivíduos normais, em todos os horários (p<0,05). A análise de Bland-Altman apresentou limites de concordância de pico e variação de PIO maiores do que o clinicamente aceitável (>3 mmHg), apesar de o teste de Pearson demonstrar boa correlação entre os resultados. CONCLUSÃO: O TSH apresenta valores de pico e variações da PIO significativamente maiores em pacientes glaucomatosos que em indivíduos normais. Os baixos níveis de concordância entre os TSHs realizados em diferentes horários do dia sugerem uma baixa reprodutibilidade do TSH, que pode limitar sua aplicabilidade para diagnóstico e acompanhamento do glaucoma.
Reference Key
medina2009arquivosreproducibility Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Flavio Mac Cord Medina;Fabrício Kafury Pereira Rodrigues;Paulo de Tarso Ponte Pierre Filho;Tiemi Matsuo;José Paulo Cabral de Vasconcellos;Vital Paulino Costa
Journal introducing innodb cluster: learning the mysql high availability stack
Year 2009
DOI
10.1590/S0004-27492009000300002
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492009000300002
Keywords
glaucoma intraocular pressure reproducibility of results ocular diagnostic techniques and proceduresophthalmology

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