Publications by authors named "Yukako Obata"

Article Synopsis
  • - A 64-year-old man on long-term statin therapy for high cholesterol developed rhabdomyolysis after initially showing symptoms of acute appendicitis.
  • - Despite not having common risk factors for rhabdomyolysis, the patient experienced acute renal failure, necessitating intensive care and urgent treatment adjustments.
  • - The patient's condition improved with proper care, leading to stabilization of kidney function and discharge from the hospital after 13 days, underscoring the need to monitor for this serious complication in statin users.
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  • This study aimed to evaluate the effects of norepinephrine and dopamine on clinical outcomes in adult patients who underwent noncardiac surgery, using data from a nationwide intensive care patient database.
  • Researchers analyzed data from 6,236 patients, comparing those who received norepinephrine versus those who received dopamine within 24 hours post-surgery.
  • The results showed no significant difference in in-hospital mortality between the two groups, but patients treated with norepinephrine had a shorter ICU stay compared to those treated with dopamine.
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  • * The patient was hospitalized for swelling in his legs and diagnosed with venous thrombosis and pulmonary embolism, leading to treatment attempts like catheter-based thrombolysis, which failed.
  • * Ultimately, he experienced rapid deterioration and died five days later, with the autopsy revealing a large thrombus in the inferior vena cava filter and suggesting that the thrombosis progressed quickly and was hard to treat.
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Background And Objectives: Anti-CD38 monoclonal antibodies, including daratumumab and isatuximab, often interfere with pretransfusion testing. Dithiothreitol (DTT) treatment of red blood cells (RBCs) negates this interference. However, the optimum DTT concentration and treatment time have not been well defined.

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Between April 2004 and December 2010, we conducted a prospective randomized controlled study comparing tamibarotene with all-trans retinoic acid (ATRA) in the maintenance therapy of newly diagnosed acute promyelocytic leukemia (APL), and here report the final results of this study with a median follow-up of 7.3 years. Of 344 eligible patients who had received ATRA and chemotherapy, 319 (93%) achieved complete remission (CR).

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Plasmin is a fibrinolytic factor and a serine protease that activates protease-activated receptors (PARs) to produce endothelium-derived relaxing factors such as nitric oxide and prostacyclin. Nitric oxide and prostacyclin production is regulated, at least in part, by the intracellular Ca concentration in various blood vessel types. Bradykinin and plasmin stimulate vascular endothelial cells and work simultaneously in pathophysiological conditions such as thrombosis and inflammation.

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Background: Water is generated by a reaction of carbon dioxide and a carbon dioxide absorbent We evaluated the effectiveness of the anesthesia machines about the water generation which occurs to an anes- thetic circuit during the prolonged low flow anesthesia.

Methods: Fifteen patients were divided into three groups; group HHS (n=5) in which a hot heater system was equipped inside anesthesia machine, group WCD (n=5) in which a water catchment device was connected with anesthesia machine, and control group N(n=5)in which normal anesthesia machine was used without special device, and studies were performed with FGF 11 - min- low flow desflurane anesthesia for more than 6 hours. The water situation in an anesthe- sia circuit was observed during the operation and was compared after the operation between these groups.

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Background. Propofol is a popular intravenous anesthetic and varieties of formulations were produced from different laboratories. The present study compared efficacy of propofol of different laboratories and different concentrations (1 and 2%) during induction of anesthesia.

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Radial arterial cannulation is a popular technique for continuous hemodynamic monitoring in an area of anesthesia and intensive care. Although the risk for invasive monitoring is considerable, there is scarce information about the change in blood flow of cannulated vessel after the catheterization. In the current investigation, we evaluated the change in the cannulated arterial blood flow.

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Study Objective: To determine the changes in QT dispersion (QTD) in the standard electrocardiogram (ECG) of postoperative patients and the effect of landiolol on QTD.

Design: Randomized, prospective, double-blinded study.

Patients: 40 postsurgical patients.

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Sinus bradycardia is a well-known consequence of stimulation of presynaptic α2 adrenergic receptors due the adminstration of dexmedetomidine. One of the most serious adverse effects of dexmedetomidine is cardiac arrest. Some cases demonstrating such an arrest due to the indiscriminate use of this drug were recently reported.

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We have previously reported that halothane anesthesia increases extracellular concentrations of dopamine (DA) metabolites in rat striatum using in vivo microdialysis techniques. Aging induces many changes in the brain, including neurotransmission. However, the relationship between aging and changes in neurotransmitter release during inhalational anesthesia has not been fully investigated.

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We described, in a 40-year-old man, sudden and unexpected increases in bispectral index values during the general anesthesia with total intravenous anesthesia using propofol in a dental surgery. The patient was administered continuous infusion of propofol and remifentanil, and intermittent supplementation of fentanyl. Immediately after the beginning of surgery, the bispectral index value increased abruptly to 90; whereas, heart rate and non-invasive blood pressure were unchanged and no physiological finding was observed.

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Purpose: Investigation into the characteristics of anesthetic interactions may provide clues to anesthesia mechanisms. Dexmedetomidine, an α(2)-adrenergic receptor agonist, has become a popular sedative in intensive care, and hydroxyzine, a histamine receptor antagonist, is well known as a tranquilizing premedication for anesthesia. However, no experimental or pharmacological evaluation has been reported concerning their combination with propofol.

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A 53-year-old man suffered maxillar osteomyelitis and removal of sequester was scheduled under general anesthesia. Pycnodysostosis had been diagnosed in childhood and body height and weight were 148 cm and 40 kg, respectively. He presented facial dysmorphia, hypomobile mandible and narrow oral cavity.

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We describe a case of marked swelling of the tongue in a patient after a long prone position neurosurgery, who was treated for hypertension with alacepril. The tongue was not congestive and history of taking an angiotensin-converting enzyme inhibitor suggested an alacepril-induced angioedema. The day after surgery, the patient's tongue was still swollen; however, fibrescopic observation of the larynx and pharynx through the nasal cavity revealed that the edema was limited to anterior tongue, and the oral cavity and oropharynx were not involved.

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Dexmedetomidine (DEX) is widely used in intensive care unit for perioperative sedation. The one advantage of DEX administration for sedation is the lack of significant respiratory depression. However, DEX shows significant interaction with anesthetics and narcotics, and we present a case in which post-anesthetic administration of DEX induced apnea and severe respiratory depression after extubation.

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We report the first case of serotonin syndrome caused by overdose of dextromethorphan in Japan. A 34-year-old woman with schizophrenia received a dextromethorphan (Medicon) for a catarrhal symptom from two individual departments of the university hospital by chance. The daily amount of dextromethorphan was up to 180 mg for several days in addition to other regular antipsychotic drugs including risperidone, amitriptyline and levomepromazine.

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Lipopolysaccharide (LPS) is an endotoxin known to induce disseminated intravascular coagulation and multiple organ failure followed by septic shock in animals. Nafamostat is a synthetic protease inhibitor with anticoagulant effects. This study investigated the effect of systemic administration of nafamostat on thermogenic homeostasis and survival time in a mouse surgical model.

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Article Synopsis
  • The low femoral approach for central venous line catheterization is challenging due to unhelpful surface landmarks.
  • In a case study, a patient needed distal femoral cannulation post-cardiac surgery, facing complications such as a thrombus in the right internal jugular vein and anatomical anomalies in the left.
  • Ultimately, the procedure was successfully performed using real-time ultrasound guidance, highlighting its effectiveness when multiple venous access difficulties arise.
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We experienced anesthesia for a female patient of BMI 39.2 with unanticipated lingual tonsillar hyperplasia. At the induction of anesthesia, both mask ventilation and tracheal intubation were difficult due to the lingual tonsillar hyperplasia.

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We describe two cases of acute transient swelling of the upper side of parotid glands of the patients after general anesthesia in the lateral position. The serum amylase levels in the patients were not increased and the enlargement of the parotid gland was diagnosed as anesthesia mumps. Previous reports suggested that mechanical compression might produce the swelling of the secreting organ, but our patients showed temporal parotid enlargement in the upper free side.

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The authors reported two cases of severe arrhythmia after gastrectomy in the patients with history of coronary bypass grafting (CABG) using the right gastroepiploic artery. The first patient was a 64-year-old man who had undergone CABG involving bypassing between the right coronary artery and the right gastroepiploic artery 5 months before. Partial gastrectomy was performed without significant complications.

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