alexa Abdominal wall fat index, estimated by ultrasonography, for assessment of the ratio of visceral fat to subcutaneous fat in the abdomen


Internal Medicine: Open Access

Author(s): Ryouichi Suzuki, Satoe Watanabe, Yasuo Hirai, Kazuhide Akiyama, Toshio Nishide

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purpose: To establish a new index of regional fat distribution using ultrasonography for assessment of the ratio of the visceral fat area (V) to the subcutaneous fat area (S) (V/S ratio). subjects and methods: The subjects examined were 62 patients (23 males and 39 females); 51 patients had hyperlipidemia and 11 patients had glucose intolerance. The mean body mass indices ranged from 20.3 to 42.9. The mean age of the patients was 44 ± 13 years. The thicknesses of the preperitoneal fat layer (P) and subcutaneous fat layer (S) in the abdomen were measured by ultrasonography and the P/S ratio was calculated. The V/S ratio was obtained with radiographic computed tomography. results: Of the various P/S ratios examined, the ratio of the maximum thickness of preperitoneal fat to the minimum thickness of subcutaneous fat was most closely correlated with the V/S ratio (r = 0.746, p <0.0001). This ratio was termed the abdominal wall fat index (AFI). AFI was positively correlated with serum triglyceride levels and negatively correlated with high-density lipoprotein cholesterol (r = −0.312, p <0.05), whereas the V/S ratio was correlated with triglyceride levels. AFI was positively correlated with basal insulin levels in both men and women. conclusion: These results suggest that AFI measured by ultrasonography may be a new indicator of visceral fat deposition, and may reflect metabolic disorders such as lipid metabolism and glucose metabolism disorders.

This article was published in The American Journal of Medicine and referenced in Internal Medicine: Open Access

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