Publications by authors named "Naoyuki Fujimura"

Background: Upper abdominal surgery is associated with postoperative diaphragmatic dysfunction. Whether patient-controlled epidural analgesia (PCEA) is superior to intravenous patient-controlled analgesia (IV-PCA) in preventing postoperative diaphragmatic dysfunction is still unclear in laparoscopic gastric surgery.

Methods: Sixteen patients undergoing laparoscopic gastrectomy randomly received either PCEA or IV-PCA.

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  • This study investigates the effectiveness of fentanyl compared to other opioids in managing pain for critically ill patients on mechanical ventilation in the ICU, using the GRADE system to assess quality and outcomes.* -
  • Researchers reviewed data from various medical databases and identified seven randomized controlled trials involving 534 patients to compare mortality rates and other health outcomes related to fentanyl versus other opioids.* -
  • The findings indicate that fentanyl does not significantly affect mortality, duration of mechanical ventilation, or ICU stays, and it does not lead to a higher incidence of severe adverse events, although the quality of evidence varied across outcomes.*
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Background: Neurotoxicity caused by a local anesthetic after regional anesthesia is a rare but serious problem for anesthesiologists. It is difficult to diagnose neurotoxicity from anesthetics because of the large number of possible diagnoses. In this case report, careful monitoring by neurological examinations helped to diagnose local neurotoxicity caused after epidural anesthesia.

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The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2020 (J-SSCG 2020), a Japanese-specific set of clinical practice guidelines for sepsis and septic shock created as revised from J-SSCG 2016 jointly by the Japanese Society of Intensive Care Medicine and the Japanese Association for Acute Medicine, was first released in September 2020 and published in February 2021. An English-language version of these guidelines was created based on the contents of the original Japanese-language version. The purpose of this guideline is to assist medical staff in making appropriate decisions to improve the prognosis of patients undergoing treatment for sepsis and septic shock.

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  • - The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2020 (J-SSCG 2020) were developed to help healthcare professionals effectively treat sepsis and septic shock, building on the previous guidelines from 2016.
  • - The guidelines cover 22 areas including important new topics such as patient-centered care and ICU-acquired weakness, and detail 118 clinical questions that address various aspects of sepsis management.
  • - In creating these guidelines, a diverse group of 226 medical professionals used the GRADE method for recommendations, resulting in 79 GRADE-based recommendations and 5 Good Practice Statements.
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Background: The role of thoracic epidural analgesia (TEA) for postoperative analgesia after video-assisted thoracic surgery (VATS) is still controversial. Some studies have reported the efficacy of ultrasound-guided retrolaminar block (RLB) for the postoperative management of pain after chest wall surgery. The purpose of this study was to compare the postoperative analgesic efficacy and adverse effects of ultrasound-guided RLB with those of TEA in patients undergoing minor VATS procedures.

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In humans and other mammals, isocapnic hypoxia sustained for 20-60 min exhibits a biphasic ventilation pattern: initial increase followed by a significant ventilatory decline ("roll-off") to a lesser intermediate plateau. During sustained hypoxia, the mechanical action and activity of the diaphragm have not been studied; thus we assessed diaphragm function in response to hypoxic breathing. Thirteen spontaneously breathing awake canines were exposed to moderate levels of sustained isocapnic hypoxia lasting 20-25 min (80 ± 2% pulse oximeter oxygen saturation).

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Background: Arginine vasopressin has been used for the management of refractory vasodilatory shock. However, it is still unclear whether arginine vasopressin is useful for hypotension in patients with spinal cord injury.

Case Description: A 78-year-old man with autonomic dysreflexia and paralysis below the level corresponding to Th2 due to spinal cord injury previously underwent cholecystectomy.

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  • The article investigates the carbon monoxide (CO) levels in blood during a hiccup cessation experiment involving plastic bag rebreathing.
  • A healthy male volunteer's CO levels in arterial and venous blood were measured at different stages of the rebreathing process alongside blood oxygen saturation levels.
  • The findings suggest that increasing arterial CO levels to match those in venous blood can stop hiccups, highlighting the need for a significant balance shift between the cerebellum and the medulla in achieving this outcome.
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Background: ABO-incompatible living-donor kidney transplantation (LDKT) requires immunotherapy and plasma exchange therapy (PEX). PEX with albumin replacement fluid reportedly decreases fibrinogen levels. However, no reports have described the effects of PEX with albumin replacement fluid on blood coagulation parameters and blood loss during the perioperative period.

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Background: While investigating the mechanisms behind hiccups, our team discovered what could be the sufficient physiological conditions for terminating even persistent cases.

Methods: To investigate the role of CO retention, a healthy male volunteer was asked to perform three kinds of rebreathing experiments using different materials: (I) a 20 L air-filled plastic bag, (II) a 20 L air-filled plastic bag with a 1.5 × 1.

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Background And Purpose: The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2016 (J-SSCG 2016), a Japanese-specific set of clinical practice guidelines for sepsis and septic shock created jointly by the Japanese Society of Intensive Care Medicine and the Japanese Association for Acute Medicine, was first released in February 2017 in Japanese. An English-language version of these guidelines was created based on the contents of the original Japanese-language version.

Methods: Members of the Japanese Society of Intensive Care Medicine and the Japanese Association for Acute Medicine were selected and organized into 19 committee members and 52 working group members.

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Article Synopsis
  • The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2016 (J-SSCG 2016) were created to address specific needs in Japan and are a joint effort by two medical societies, reflecting localized clinical practices.
  • The guidelines were developed with input from various medical professionals, utilizing a structured method that included public commentary and a peer review system to ensure quality and transparency in the drafting process.
  • In total, 87 clinical questions were identified across 19 areas of focus, including new topics relevant to pediatric care, with important revisions made since the previous version in 2012.
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Background: The McGRATH® MAC (McGRATH) laryngoscope is a newly developed video device, which enables us to perform tracheal intubation minimally invasive. The aim of this study is to evaluate and com- pare the hemodynamic changes triggered by intuba- tion using either the McGRATH or the Macintosh laryngoscope.

Methods: Thirty-seven patients, between 20 and 42 years of age with ASA status I or II, were randomly assigned to two groups : the McGRATH (n=19) or the Macintosh laryngoscope (n=18).

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Purpose: Fentanyl is a strong µ-opioid analgesic which attenuates the stimulation of surgical invasion and tracheal intubation. However, intravenous fentanyl often induces coughing [fentanyl-induced coughing (FIC)] during induction of anesthesia. We found that the swallowing action, when requested at induction of anesthesia, attenuated FIC.

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In humans, isocapnic hypoxia sustained for 20-30 min elicits a biphasic ventilatory response with an initial increased peak followed by a roll-off to a lesser, intermediate plateau. However, it is uncertain if this hypoxic roll-off is common for all mammals, as canines have been a notable exception. We examined the effect of moderate isocapnic hypoxia (SpO2 80%) sustained for 20 min in 13 adult, awake, intact canines.

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We investigated the effects of pentoxifylline (PTX) on endotoxin-induced diaphragmatic dysfunction in vitro. Seventy-two rats were divided into 3 groups: a group in which endotoxin (20 mg/kg) was injected intraperitoneally (endotoxin-group), a group in which PTX (100 mg/kg) was injected intraperitoneally 30 min before injection of endotoxin (endotoxin-PTX group), and a group in which only saline was given (sham group). Left hemidiaphragms were removed 4 h after injection of endotoxin.

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  • * Rats were split into a sepsis-induced group (via cecal ligation and perforation) and a control (sham) group, with muscle contractility assessed after exposure to either dobutamine (beta-1) or terbutaline (beta-2).
  • * Results showed that terbutaline improved diaphragmatic contractility in septic rats, while dobutamine had no effect, suggesting that beta-2 adrenoceptors are crucial for enhancing diaphragm function in sepsis.
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Intraabdominal sepsis can lead to acute respiratory failure, and concomitant diaphragmatic dysfunction may be aggravated by sepsis-induced airway hyperreactivity. We previously reported that isoproterenol, a nonselective beta-adrenoceptor agonist, increased diaphragmatic contractility and accelerated recovery from fatigue during sepsis. The purpose of this study was to demonstrate the direct inotropic effect of a potent bronchodilator and beta(2)-selective adrenoceptor agonist, procaterol, on fatigued diaphragmatic contractility in an intraabdominal septic model.

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Background: Sepsis causes diaphragmatic dysfunction, which can lead to the development of respiratory failure. We previously reported that isoproterenol, non-selective beta-adrenergic agonist, improved contractility of the diaphragm in a septic rat model. Since beta(2)-adrenoceptor agonists are widely used in the treatment of chronic respiratory disease, we investigated the effect of terbutaline, a selective beta(2)-adrenergic agonist, on contractility of the septic rat diaphragm and the contribution of intracellular Ca(2+) to the effect of terbutaline in vitro.

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Study Objective: Abdominal aortic aneurysmectomy (AAAectomy) results in a general ischemia-reperfusion syndrome accompanied by an acute rise in pulmonary artery pressure (PAP). We examined whether ulinastatin, a urinary trypsin inhibitor, prevents ischemia-reperfusion injury and increase in PAP after aortic unclamping (XU) during AAAectomy.

Design: Prospective study.

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Objective: The purposes of the present study were to evaluate the induction of heat shock protein (HSP) 70 expression in the diaphragm by geranylgeranylacetone (GGA) administration and to determine the effect of HSP70 induction on diaphragm contractility measured in vitro and the production of oxygen-derived free radicals during experimental septic peritonitis.

Design: Prospective laboratory study.

Setting: University laboratory.

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  • A 55-year-old woman underwent laparoscopic adrenal surgery, receiving anesthesia through propofol, nitrous oxide/sevoflurane, and an epidural.
  • After the surgery, she experienced a sudden drop in oxygen levels and weaker breath sounds on one side, leading to a chest X-ray that revealed left pneumothorax and pneumomediastinum.
  • The pneumothorax was likely caused by gas leakage during the surgery or a minor diaphragm injury, indicating that such complications, although rare, may occur more frequently in laparoscopic adrenal procedures due to the anatomy involved.
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A 22-year-old man was admitted to our ICU for treatment of fat embolism syndrome complicated with multiple bone fractures. Acute respiratory distress syndrome developed, and the patient received steroid therapy. During the steroid therapy, symmetrical proximal muscle weakness of all four limbs without sensory abnormalities and autonomic nervous system dysfunction developed.

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