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4 results on '"Tachioka S"'

1. Cardiac Tamponade Due to Intrapericardial Hernia Mimicking ST-Segment Elevation Myocardial Infarction.

Author

Abe T, Kijima H, Ohuchida J, Hisashi Y, Tachioka S, Iwatani K, Sadohara K, Ameda T, and Ochiai H

Abstract

Intrapericardial hernia is a diaphragmatic hernia that extremely rarely causes cardiac tamponade. We present a case of a cardiac tamponade caused by an intrapericardial hernia in a 78-year-old male patient with a history of coronary artery bypass grafting, mimicking ST-segment elevation myocardial infarction, which was successfully treated by emergent laparotomy., Competing Interests: The authors have reported that they have no relationships relevant to the contents of this paper to disclose., (© 2024 The Authors.)

Published
2024
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2. Dynamic changes in platelets caused by shear stress in aortic valve stenosis.

Author

Kanda H, Yamakuchi M, Matsumoto K, Mukaihara K, Shigehisa Y, Tachioka S, Okawa M, Takenouchi K, Oyama Y, Hashiguchi T, and Imoto Y

Subjects
Aged, Animals, Female, Humans, Male, Mice, Retrospective Studies, Aortic Valve Stenosis blood, Blood Platelets immunology, Platelet Count methods
Abstract

Background and Objective: Turbulent blood flow in patients with aortic valve stenosis (AS) results in morphological and functional changes in platelets and coagulation factors. The aim of this study is to determine how shear stress affects platelets and coagulation factors., Methods: We retrospectively evaluated data from 78 patients who underwent AVR to treat AS between March 2008 and July 2017 at Kagoshima University Hospital., Results: Platelet (PLT) count obviously decreased at three days after AVR, and increased above preoperative levels at the time of discharge. In contrast, platelet distribution width (PDW), mean platelet volume (MPV), and platelet large cell ratio (P-LCR) increased three days after AVR, then decreased to below preoperative levels. No differences were evident between groups with higher (HPPG > 100 mmHg) and lower (LPPG < 100 mmHg) peak pressure gradients (PPG) before AVR, whereas PLT count, PDW, MPV and P-LCR improved more in the HPPG group. Plateletcrit (PCT), which represents the total volume of platelets, increased after AVR due to decreased shear stress. High increasing rate of PCT was associated with lower PLT count, higher PDW and lower fibrinogen., Conclusion: Shear stress affects PLT count, PDW, and fibrinogen in patients with AS.

Published
2021
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3. Iatrogenic atrial septal defect caused by repeated catheter ablation.

Author

Nagatomi S, Matsumoto K, Imada R, Ono F, Tachioka S, and Imoto Y

Subjects
Atrial Septum diagnostic imaging, Atrial Septum surgery, Heart Injuries diagnostic imaging, Heart Injuries surgery, Humans, Hypertension, Pulmonary etiology, Male, Middle Aged, Reoperation, Treatment Outcome, Atrial Fibrillation surgery, Atrial Septum injuries, Cardiac Catheterization adverse effects, Catheter Ablation adverse effects, Heart Injuries etiology, Iatrogenic Disease
Abstract

Iatrogenic atrial septal defect is an issue after percutaneous interventions for structural heart disease. A 63-year-old man, who had previously received 5 catheter ablations for paroxysmal atrial fibrillation, was found to have an iatrogenic atrial septal defect that persisted after the fourth intervention. Approximately 4 years later, he suffered exertional dyspnea. Pulmonary hypertension was caused by a left-to-right shunt via a large iatrogenic atrial septal defect. We performed surgical closure and the symptom improved. The timing of treatment for persistent iatrogenic atrial septal defect is difficult to determine, but preferable before the appearance of right ventricular dysfunction or embolism.

Published
2020
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4. [Study of Rapid Simultaneous Determination of Residual Veterinary Drugs in Livestock and Fishery Products Using Three-Layer Extraction].

Author

Daimon T, Tachioka S, Takahashi K, and Hamada Y

Subjects
Animals, Chromatography, Liquid, Fisheries, Japan, Tandem Mass Spectrometry, Fishes, Livestock, Veterinary Drugs analysis
Abstract

A rapid, easy, versatile, simultaneous analytical method based on three-layer extraction and LC-MS/MS was developed for the determination of residual veterinary drugs in livestock and fishery products. In this method, degreasing with n-hexane, partitioning into acetonitrile, and purification by the salting-out effect were simultaneously performed after extraction with acetone aq. It allowed to prepare a test solution without concentrating, transferring, and purification using solid column. Recoveries of quinolones were improved by adjusting acid concentration and adding EDTA-2Na・2H 2 O. As a result, 62 analytes for cattle muscle, 63 analytes for cattle fat, 62 analytes for eel, and 65 analytes for salmon met the management criteria of the guideline for validity assessment (Ministry of Health, Labour and Welfare in Japan). Thus, the present method could be useful for a rapid determination of residual veterinary drugs in livestock and fishery products.

Published
2020
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