Publications by authors named "Katsuyuki Moriwaki"

Complex regional pain syndrome (CRPS) type 1 is a chronic pain condition whose pathogenesis involves changes in the central and peripheral nervous systems, with potential genetic contributions. Functional magnetic resonance imaging (fMRI) studies report that alterations in resting-state functional connectivity (rsFC) may reflect central nervous system anomalies in CRPS type 1. Herein, we describe the case of a father and son with CRPS type 1 who exhibited different rsFC patterns in fMRI analyses correlating with their individual CRPS phenotypes.

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Background: Myofascial pain syndrome is one of the causes of prolonged postoperative pain after abdominal surgery. However, diagnosis and treatment of myofascial pain syndrome, especially its myofascial trigger point (MTrP), have not been well established.

Case Presentation: A 55-year-old man experienced severe subacute abdominal pain after laparoscopic hepatectomy despite aggressive postoperative pain management.

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Purpose: Prolonged postoperative neuromuscular respiratory paralysis after administration of a nondepolarizing neuromuscular blocking agent is a serious concern during anesthetic management of patients with Charcot-Marie-Tooth disease (CMTD). Some recent reports have described rocuronium use without respiratory paralysis in CMTD patients when sugammadex was used for its reversal. We report a case in which an induction dose of rocuronium caused a prolonged respiratory paralysis in a patient with undiagnosed type 1A CMTD (CMT1A).

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Background: Prophylactic antibiotics and neuromuscular blocking agents (NMBA) are two of the major causative agents of anaphylaxis after induction of anesthesia.

Case Presentation: One female and one male patients (aged 29 and 69 years, respectively) had Ring and Messmer scale grade III anaphylaxis after administration of prophylactic antibiotics following induction of anesthesia. They showed typical hemodynamic and respiratory features of life-threatening anaphylaxis.

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Article Synopsis
  • The study aimed to explore the outcomes of patients experiencing in-hospital cardiac arrest (IHCA) who received CPR with an automated external defibrillator (AED) in non-monitored areas, focusing on factors influencing return of spontaneous circulation (ROSC) and survival rates.
  • In total, 109 patients were analyzed, revealing that CPR with AED since 2013 significantly improved ROSC rates (21.1% survival to discharge), while tracheal intubation was linked to higher ROSC but lower post-ROSC survival.
  • The research concluded that factors affecting ROSC differ from those influencing survival after ROSC; for instance, dysrhythmia as the cause of cardiac arrest and ICU admission were notably associated with
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Introduction: Tactile hypoesthesia observed in patients with myofascial pain syndrome (MPS) is sometimes reversible when pain is relieved by trigger point injections (TPIs). We aimed to investigate the prevalence of such reversible hypoesthesia during TPI therapy and topographical relations between areas of tactile hypoesthesia and myofascial trigger points (MTrP) in patients with MPS.

Methods: Forty-six consecutive patients with MTrP were enrolled in this study.

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Background: Postoperative delirium in the elderly is associated with increased morbidity and risk of injury. However, the opinion of attending surgeons and anes- thesiologists regarding postoperative delirium is uncer- tain, as is the prevention and treatment of the condi- tion, in Japanese hospitals.

Methods: We conducted a multicenter questionnaire survey about postoperative delirium.

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Background: Recently, rocuronium with subsequent use of sugammadex was proposed for electroconvulsive therapy (ECT) as an alternative to succinylcholine. Because sugammadex is cleared via the kidney with no metabolism, it is unknown that rocuronium-sugammadex use is safe in hemodialysis patients who received ECT.

Case Presentation: In this case report, we used rocuronium with subsequent administration of sugammadex in a 69-year-old female, hemodialysis patient, scheduled for ten ECT sessions for severe major depression.

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Purpose: We describe a case of urinary retention caused by viral sacral myeloradiculitis (Elsberg syndrome) that occurred one week after spinal anesthesia. The differential diagnosis of urinary retention after spinal anesthesia is discussed.

Clinical Features: A 76-yr-old male patient presented for operative removal of a right testicular hydrocele under spinal anesthesia.

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We report a case of an accidental loss of anesthesia records through network failure of an anesthesia information management system (AIMS). The backup data were not kept in the anesthesia workstations or the server during the failure. Accordingly, anesthesia records of five patients were lost for one hour.

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Chronic constriction injury (CCI) to the rat sciatic nerve results in osteopenia in the affected hind limb. One possible mechanism for this osteopenia is neurogenic inflammation, in which neuropeptides, represented by substance P (SP), are involved. We attempted to determine whether capsaicin treatment, which can deplete SP from nerve terminals, is effective in inhibiting osteopenia induced by CCI.

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Osteopathic changes sometimes occur in patients with complex regional pain syndrome (reflex sympathetic dystrophy and causalgia). We aimed to investigate whether such osteopathic changes occurred in rats with chronic constriction injury (CCI) of the sciatic nerve. A CCI of the sciatic nerve was established in a unilateral hind limb in 39 adult Sprague-Dawley rats, which were killed 1, 2, 3, 5, or 7 weeks after the CCI procedure.

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