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Uraminami S.,Osaka Electro-Communication University | Sakai N.,Daini Okamoto General Hospital | Oishi T.,Osaka Electro-Communication University | Matsumura M.,Osaka Electro-Communication University
IEEJ Transactions on Electronics, Information and Systems | Year: 2016

In this study, a breath monitoring system is being developed using a contact type microphone attached the neck and measuring the sound at the time of respiration (breath sound). In this paper, I made s sound measuring amplifier with adjustable frequency bandwidth amplification degree, so it fits each subject properly as well as improving the sound measuring circuit. Then I demonstrated that normal breathing, apnea and hypopnea could be determined analysing the relation between nasal airflow and the amplitude of the sound produced at neck level doing respiration. In addition, I verified the efficacy of the breath monitoring system by comparing it to an equipment that can, in a simple manner, examine the sleep apnea. © 2016 The Institute of Electrical Engineers of Japan. Source

Kawajiri H.,Kyoto Prefectural University of Medicine | Oka K.,Kyoto Prefectural University of Medicine | Sakai O.,Kyoto Prefectural University of Medicine | Takahashi A.,Red Cross | And 3 more authors.
Thoracic and Cardiovascular Surgeon | Year: 2015

Objectives The surgical treatment of Kommerell diverticula is associated with high mortality and morbidity rates. In the mid-2000s, hybrid aortic arch repair was developed, and the procedure has since been used to repair Kommerell diverticula. In the present study, we focused on the postoperative outcomes of two-stage hybrid repair of Kommerell diverticula that required supra-aortic debranching (type I hybrid arch repair). Methods From August 2010 to July 2013, a total of four patients (aged 73.5 ± 9.5 years) underwent two-stage hybrid repair (type I hybrid arch repair) for Kommerell diverticula, and their cases were retrospectively studied. All four patients had right aortic arches and aberrant left subclavian arteries. The repair procedure consisted of two stages: (1) debranching of the supra-aortic vessels via a median sternotomy; (2) exclusion of the Kommerell diverticulum by performing thoracic endovascular repair via a femoral approach and coil embolization of the orifice of the aberrant subclavian artery. Results There were no in-hospital deaths. One patient developed an acute kidney injury and required hemodialysis on postoperative day 2, although his renal function recovered within 48 hours. No strokes, paraplegia, or early aortic events were observed in our series. The mean follow-up period was 19.5 months (range, 5-47 months). All patients remained free from aortic events and endoleaks during the follow-up period. Conclusion The early and mid-term outcomes of hybrid repair for Kommerell diverticula that require supra-aortic debranching, which are less invasive and do not involve hypothermic circulatory arrest, are acceptable. However, this procedure requires the insertion of an endograft into the ascending aorta, and careful and long-term follow-up is required to confirm its efficacy. © 2015 by Thieme Medical Publishers, Inc. Source

Isozumi T.,Daini Okamoto General Hosipital | Kidooka M.,Daini Okamoto General Hosipital | Lee H.,Daini Okamoto General Hosipital | Fukao S.,Daini Okamoto General Hosipital | And 2 more authors.
Brain and Nerve | Year: 2013

We report a patient with a brain metastasis from an alveolar soft part sarcoma (ASPS) of the thigh whose visual field defect was resolved in a stepwise manner after preoperative embolization and tumor resection. A 29-year-old man who had undergone surgery to remove an ASPS situated in the thigh developed headaches and homonymous hemianopsia. His visual field defect was evaluated using a Goldmann perimeter. He was found to have a large, well-circumscribed mass in the right occipital lobe. This mass was visible on brain computed tomography and magnetic resonance imaging and was strongly and homogeneously enhanced following contrast administration. Selective angiography revealed a hypervas- cular mass supplied by branches of the right middle cerebral artery, and preoperative particulate embolization was performed to reduce intraoperative bleeding. A tumor-supplying branch of the middle cerebral artery was superselectively catheterized. For embolization, polyvinyl alcohol (PVA) particles of 90-180 //m in diameter were used. The visual field defect partially improved soon after the preoperative embolization. Surgical resection was performed 3 days after embolization, and the tumor was completely excised by a right occipital craniotomy. Preoperative embolization made the surgical resection easier. Intraoperative bleeding was easily controlled. The pathological diagnosis was ASPS. The intratumoral-embolized vessels were filled with PVA particles. After resection, the patient progressed well with further improvement in visual field function. Rapid improvement of the visual field can be used as an indicator of successful embolization without complications. Source

Uchiyama K.,Daini Okamoto General Hospital | Shimizu Y.,Daini Okamoto General Hospital
Japanese Journal of Cancer and Chemotherapy | Year: 2014

We encountered cases of capecitabine-induced increase in blood triglyceride (TG) levels, which is relatively rare in routine medical practice. Although capecitabine-induced hypertriglyceridemia (CI-HTG) has been occasionally reported in other countries, such cases have not been reported in Japan. Therefore, the details of this condition remain to be clarified. To obtain evidence that would be useful in routine medical practice, we conducted a retrospective study of patients with CI-HTG. The study included 56 patients, of whom, 14 (25.0%) had TG levels < 150 mg/dL before capecitabine treatment that increased to≥150 mg/dL after treatment. Adverse events were graded according to the Common Terminology Criteria for Adverse Events, v4.0, Japanese edition, Japan Clinical Oncology Group version (CTCAE V4.0-JCOG). We found that TG levels were markedly elevated (≥ Grade 3) in 2 patients (3.6%). Thus, CI-HTG also affects Japanese patients, although its frequency is relatively low. Detailed studies including a larger number of facilities should be conducted in future. Source

Sakai N.,Daini Okamoto General Hospital | Sakai N.,Osaka Electro-Communication University | Matsumura M.,Daini Okamoto General Hospital | Matsumura M.,Osaka Electro-Communication University
IEEJ Transactions on Electronics, Information and Systems | Year: 2014

The purpose was also to verify that the precision of this method was at least equivalent to that of a conventional polygraph in a medical facility. I measured an oral throat sound and nose pressure signal at the same time. I measured an oral throat sound when it was with amplitude 100%, 75%, 50%, 25%, 10% of nose pressure signals. I collected breathing and an oral throat sound at the time of the hypopnea and each average of the Peak to Peak level of the amplitude of the nose pressure signal each and I calculated an oral throat sound and a coefficient of correlation of the amplitude of the nose pressure signal and usually demanded correlations. At 100% of the nose pressure signal, the throat sound was 25.96 dB; at 75%, it was 18.11 dB; at 50%, it was 14.47 dB; at 25%, it was 8.54 dB; and at 10%, it was 6.61 dB. A strong correlation between nose pressure and throat sound was shown (r2 = 0.98, P < 0.001). The throat sound and nose pressure signal showed a strong correlation, which suggested a precision similar to that of a polygraph in a medical facility. © 2014 The Institute of Electrical Engineers of Japan. Source

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