High uric acid level predicts left atrial thrombus or spontaneous echo contrast detected by transesophageal echocardiography: Meta-analysis and systematic review

Background: Recent observational studies have suggested that the patients with hyperuricemia have a higher risk of having left atrial thrombus (LATH) or left atrial spontaneous echo contrast (LASEC) by transesophageal echocardiography (TEE), while the ultimate predictive value of a high uric acid (U...

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Autores principales: En-Yuan Zhang, Lu Kou, Min Li, Chee Yuan Ng, Jian-Ping Zhao, Guang-Ping Li, Tong Liu
Formato: article
Lenguaje:EN
Publicado: KeAi Communications Co., Ltd. 2016
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Acceso en línea:https://doaj.org/article/b9f414373ccb41748a5ce76af04fd2b2
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Sumario:Background: Recent observational studies have suggested that the patients with hyperuricemia have a higher risk of having left atrial thrombus (LATH) or left atrial spontaneous echo contrast (LASEC) by transesophageal echocardiography (TEE), while the ultimate predictive value of a high uric acid (UA) level on LATH/LASEC remained obscure. Methods: We searched the PubMed and Cochrane clinical trials databases up to July 2015. Following screening the 369 initially identified studies, we analyzed six observational studies with 2381 patients. Results: The meta-analysis of these studies showed that an elevated serum UA level was associated with a higher likelihood of LATH/LASEC (OR = 1.59, 95%CI 1.13â2.23, P = 0.008), while significant differences exist among individual trials (P < 0.00001 and I2 = 85%). Sensitivity analysis failed to find any heterogeneity. Conclusion: An elevated UA level was associated with a higher risk of detecting a left atrial abnormality represented by LATH/LASEC. Keywords: Uric acid, Left atrium, Thrombus, Transesophageal echocardiography, Atrial fibrillation