Publications by authors named "Taiki Haga"

Article Synopsis
  • The study investigates the impact of vasopressin versus other vasopressors (like norepinephrine and epinephrine) on kidney outcomes in children and young adults undergoing continuous renal replacement therapy (CRRT).
  • Data was analyzed from a multicenter cohort including 1,016 patients under 25 years in pediatric intensive care units (PICUs) over nearly seven years.
  • Results show that vasopressin use is linked to higher risks of major adverse kidney events (MAKE-90), especially when started later in the CRRT process, indicating potential negative effects on kidney health.
View Article and Find Full Text PDF

We investigate the recently proposed dimensional reduction conjecture in driven disordered systems using a machine learning technique. The conjecture states that a static snapshot of a disordered system driven at a constant velocity is equal to a space-time trajectory of its lower-dimensional pure counterpart. This suggests that the three-dimensional (3D) random field XY model exhibits the Berezinskii-Kosterlitz-Thouless transition when driven out of equilibrium.

View Article and Find Full Text PDF

In unfractionated heparin (UFH) monitoring during extracorporeal circulation, the traditional measures of activated clotting time (ACT) or activated partial thromboplastin time (APTT) may diverge, confounding anticoagulant adjustments. We aimed to explore the factors explaining this discrepancy in children and young adults. This retrospective observational study, conducted at an urban regional tertiary hospital, included consecutive pediatric patients who received UFH during extracorporeal circulation (continuous kidney replacement therapy or extracorporeal membrane oxygenation) between April 2017 and March 2021.

View Article and Find Full Text PDF

Background: The use of continuous renal replacement therapy (CRRT) in critically ill children is rapidly increasing, but the standard of care has not yet been established and prognosis remains poor. To develop optimal CRRT strategies, we launched a research project generating the Japanese Pediatric CRRT registry, a multicenter registry of CRRT in Japanese pediatric intensive care units (PICUs), to investigate the actual status of CRRT in recent years in PICUs, where data are lacking.

Methods: This manuscript presents a protocol for planning a multicenter prospective registry.

View Article and Find Full Text PDF

Purpose: Continuous renal replacement therapy (CRRT) is used for supportive management of acute kidney injury (AKI) and disorders of fluid balance (FB). Little is known about the predictors of successful liberation in children and young adults. We aimed to identify the factors associated with successful CRRT liberation.

View Article and Find Full Text PDF

Importance: Continuous kidney replacement therapy (CKRT) is increasingly used in youths with critical illness, but little is known about longer-term outcomes, such as persistent kidney dysfunction, continued need for dialysis, or death.

Objective: To characterize the incidence and risk factors, including liberation patterns, associated with major adverse kidney events 90 days after CKRT initiation (MAKE-90) in children, adolescents, and young adults.

Design, Setting, And Participants: This international, multicenter cohort study was conducted among patients aged 0 to 25 years from The Worldwide Exploration of Renal Replacement Outcomes Collaborative in Kidney Disease (WE-ROCK) registry treated with CKRT for acute kidney injury or fluid overload from 2015 to 2021.

View Article and Find Full Text PDF

Autoimmune diseases, including dermatomyositis, can be complicated by an acquired autoimmune coagulation factor XIII deficiency, which sometimes results in fatal bleeding. Here, we report the case of a young woman with anti-NPX-2 antibody-positive dermatomyositis who developed massive haemothorax with acquired factor XIII deficiency during treatment, including plasma exchange therapy. Emergency transcatheter arterial embolisation was performed and coagulation factor XIII concentrates (Fibrogammin P® 240 U/day for 5 days) were supplemented.

View Article and Find Full Text PDF

Introduction: Information on the implementation of continuous renal replacement therapy (CRRT) in pediatric intensive care units (PICUs) is limited. We investigated the real-world practice of this therapy in Japan.

Methods: We conducted a cross-sectional survey of 26 hospitals with PICUs in Japan.

View Article and Find Full Text PDF

Patients with congenital heart disease who have a variety of cardiac/extracardiac problems are at high risk for deterioration. This study aimed to determine the effectiveness of post-intensive care unit (ICU) follow-up by a rapid response team (RRT) after congenital heart surgery. This before-and-after study was conducted at an urban regional tertiary hospital.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

It is highly nontrivial to what extent we can deduce the relaxation behavior of a quantum dissipative system from the spectral gap of the Liouvillian that governs the time evolution of the density matrix. We investigate the relaxation processes of a quantum dissipative system that exhibits the Liouvillian skin effect, which means that the eigenmodes of the Liouvillian are localized exponentially close to the boundary of the system, and find that the timescale for the system to reach a steady state depends not only on the Liouvillian gap Δ, but also on the localization length ξ of the eigenmodes. In particular, we show that the longest relaxation time τ that is maximized over initial states and local observables is given by τ∼Δ^{-1}(1+L/ξ) with L being the system size.

View Article and Find Full Text PDF
Article Synopsis
  • - 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.
View Article and Find Full Text PDF

While there are no clear indications for body temperature control during viral infections such as COVID-19, if heat stress caused by COVID-19 leads to organ failure, then proactive body temperature regulation may be an effective treatment option.

View Article and Find Full Text PDF

Objectives: To evaluate the characteristics of patients with congenital heart disease requiring ICU admission from emergency departments and determine the associations between the reasons for emergency department visits and specific congenital heart disease types or cardiac procedures.

Design: Retrospective observational study using data from a Japanese multicenter database.

Setting: Twelve PICUs and 11 general ICUs in Japan.

View Article and Find Full Text PDF

Objective: The use of pediatric rapid response systems (RRSs) to improve the safety of hospitalized children has spread in various western countries including the United States and the United Kingdom. We aimed to determine the prevalence and characteristics of pediatric RRSs and barriers to use in Japan, where epidemiological information is limited.

Design: A cross-sectional online survey.

View Article and Find Full Text PDF

The Floquet-Magnus expansion is a useful tool to calculate an effective Hamiltonian for periodically driven systems. In this study, we investigate the convergence of the expansion for a one-body nonlinear system in a continuous space, a driven anharmonic oscillator. In this model, all eigenstates of the time-evolution operator are found to be localized in energy space, and the expectation value of the energy is bounded from above.

View Article and Find Full Text PDF

The indications for using temporary epicardial pacing wires after pediatric cardiac surgery remain unclear. Post-procedure intracardiac pressure is valuable for detecting circulatory disturbances and residual lesions. This study aimed to examine the association between post-procedure intracardiac pressures and the use of temporary epicardial pacing wires.

View Article and Find Full Text PDF

We investigate three-dimensional O(N) spin models driven with a uniform velocity over a random field. Within a spin-wave approximation, it is shown that in the strong driving regime the model with N=2 exhibits a quasi-long-range order in which the spatial correlation function decays in a power-law form. Furthermore, for the cases that N=2 and 3, we numerically demonstrate a nonequilibrium phase transition between the quasi-long-range order phase and the disordered phase, which turns out to resemble the Kosterlitz-Thouless transition in the two-dimensional pure XY model in equilibrium.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessionfv6t1drqr731l4cffrt3aiimnl5oh2jb): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once