Kosuke Hamagawa

Publications (2)2.02 Total impact

• Article: Abdominal visceral fat thickness measured by ultrasonography predicts the presence and severity of coronary artery disease.

  Kosuke Hamagawa, Yoshihisa Matsumura, Toru Kubo, Kayo Hayato, Makoto Okawa, Katsutoshi Tanioka, Naohito Yamasaki, Hiroaki Kitaoka, Toshikazu Yabe, Masanori Nishinaga, Yoshinori L Doi
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  ABSTRACT: Abdominal visceral fat plays a critical role in the pathogenesis of metabolic syndrome, which is a risk factor for coronary artery disease (CAD). Ultrasonography (US) distinctively quantifies visceral fat and subcutaneous fat. We measured the maximum preperitoneal visceral fat thickness (Vmax) and the minimum subcutaneous fat thickness (Smin) by US in 185 patients who underwent coronary angiography. Although the 144 patients with CAD had larger Vmax (8.8 ± 3.6 vs. 6.4 ± 2.8 mm; p < 0.001) than those without, there was no difference in Smin. Vmax of 6.9 mm or higher was an independent predictor of CAD (odds ratio, 3.710, p = 0.008) by multiple logistic regression analysis. Vmax significantly correlated with the number of diseased vessels. Assessment of abdominal visceral fat by US gives us incremental information beyond conventional risk factors for predicting CAD in routine clinical practice.
  Ultrasound in medicine & biology 11/2010; 36(11):1769-75. · 2.02 Impact Factor
• Article: [Severe pulmonary hypertension and congestive heart failure in an elderly patient with Basedow's disease].

  Kosuke Hamagawa, Toshikazu Yabe, Kayo Hayato, Naohito Yamasaki, Hiroaki Kitaoka, Yoshihisa Matsumura, Jun Takata, Masanori Nishinaga, Yoshinori Doi
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  ABSTRACT: An 83-year-old woman was admitted to our hospital with dyspnea. A chest X-ray showed cardiomegaly and pulmonary congestion. An echocardiogram revealed severe tricuspid regurgitation and markedly elevated transtricuspid pressure gradient of 103 mmHg. There was no left ventricular systolic or diastolic dysfunction. Laboratory evaluation revealed elevated free T4 and suppressed TSH levels. Serum level of anti-TSH receptor antibody was significantly elevated. A thyroid echogram demonstrated increased internal flow pattern in the thyroid gland. As a result of these findings, she was given a diagnosis of Basedow's disease associated with severe pulmonary hypertension and congestive heart failure. After treatment for hyperthyroidism with thiamazole, propranolol, furosemide, and warfarin, she made good recovery with gradual resolution of pulmonary hypertension. The severity of pulmonary hypertension in this case was significantly higher than that in previous reports, possibly because of concomitant minor pulmonary embolism, thiamine deficiency and anemia. In summary, we report a rare case of Basedow's disease with severe and reversible pulmonary hypertension that appeared in very old age.
  Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 08/2009; 46(4):358-63.