Publications by authors named "Ken Tonai"

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Comparison of airway opening pressure measurements: low-constant-flow vs. constant low-slope pressure ramp methods.
Ken Tonai, Atsuko Shono, Ryuichi Nakayama, Shinshu Katayama

BMC Anesthesiol· November 2025

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Ineffective Effort and Ventilation Heterogeneity Revealed by Four-Dimensional Computed Tomography.
Ken Tonai, Atsuko Shono, Hisashi Imahase, Shinshu Katayama

Am J Respir Crit Care Med· September 2025

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Complex ventilatory dynamics in a patient with flail chest and diaphragmatic dysfunction.
Atsuko Shono, Ken Tonai, Hisashi Imahase, Shinshu Katayama

Intensive Care Med· August 2025

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Vigorous Diaphragm Movement Captured by Four-Dimensional Computed Tomography in a Patient with Quadriplegia.
Atsuko Shono, Ken Tonai, Shinshu Katayama, Masamitsu Sanui

Am J Respir Crit Care Med· March 2025

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"Tracheal ballooning" during positive-pressure ventilation in a patient with status asthmaticus and acquired tracheomegaly.
Yoshihiro Nagai, Shigehiko Uchino, Ken Tonai, Shinshu Katayama

Intensive Care Med· March 2025

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Regional ventilation dynamics of electrical impedance tomography validated with four-dimensional computed tomography: single-center, prospective, observational study.
Shinshu Katayama, Ken Tonai, Kie Nakamura, Misuzu Tsuji, Shinichiro Uchimasu

Crit Care· October 2024

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Association between hypomagnesemia and serum lactate levels in patients with sepsis: a retrospective observational study.
Ken Tonai, Shinshu Katayama, Kansuke Koyama, Hisashi Imahase, Shin Nunomiya

J Anesth Analg Crit Care· April 2024

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Can Four-Dimensional Computed Tomography Assess Dynamic Changes in Lung Volumes in Mechanically Ventilated Patients?
Shinshu Katayama, Ken Tonai, Kie Nakamura, Misuzu Tsuji, Shinichiro Uchimasu

Am J Respir Crit Care Med· March 2024

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Reply to The Paradox of Occlusion Pressure at 0.1 s (P) Measurement Without Airway Occlusion.
Shinshu Katayama, Ken Tonai, Shin Nunomiya

Respir Care· March 2024

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Intercostal Recession and Bulging during Pendelluft Detected in Four-Dimensional Computed Tomography.
Shinshu Katayama, Ken Tonai, Shono Atsuko

Am J Respir Crit Care Med· November 2023

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Bias and Precision of Continuous P Measurement by Various Ventilators: A Simulation Study.
Shinshu Katayama, Ken Tonai, Shin Nunomiya

Respir Care· October 2023

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Upward Diaphragm Motion on Four-Dimensional Computed Tomography in Severe Diaphragm Weakness.
Ken Tonai, Shinshu Katayama, Atsuko Shono, Shin Nunomiya

Am J Respir Crit Care Med· August 2023

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Bronchial Edema-like Varices in Pulmonary Vein Stenosis after Lung Lobectomy.
Ken Tonai, Shinshu Katayama, Hiroyoshi Tsubochi, Shin Nunomiya

Am J Respir Crit Care Med· May 2023

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Airway opening pressure in an obese ARDS patient: just the start of airway recruitment.
Shinshu Katayama, Giorgio Antonio Iotti, Ken Tonai

J Anesth Analg Crit Care· May 2023

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Association between hypomagnesemia and coagulopathy in sepsis: a retrospective observational study.
Ken Tonai, Shinshu Katayama, Kansuke Koyama, Naho Sata, Yoshihiro Tomioka

BMC Anesthesiol· November 2022

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Four-Dimensional Computed Tomography of Paradoxical Motion of Eventrated Diaphragm Induced by Reverse Triggering.
Ken Tonai, Shinshu Katayama, Kansuke Koyama, Shin Nunomiya

Am J Respir Crit Care Med· September 2022

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Upper Arm Muscular Echogenicity Predicts Intensive Care Unit-acquired Weakness in Critically Ill Patients.
Tameto Naoi, Mitsuya Morita, Kansuke Koyama, Shinshu Katayama, Ken Tonai

Prog Rehabil Med· July 2022

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Virulent pneumonia in an immunocompetent adult associated with a home whirlpool bath: A case report.
Yasumaro Fujiki, Naoko Mato, Shinya Watanabe, Tomoki Shibano, Ken Tonai

Respir Med Case Rep· June 2022

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Pseudomembranous Invasive Tracheobronchial Aspergillosis.
Shinshu Katayama, Ken Tonai, Daisuke Minakata, Shin Nunomiya

Am J Respir Crit Care Med· February 2022

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Accuracy of two pulse-oximetry measurements for INTELLiVENT-ASV in mechanically ventilated patients: a prospective observational study.
Shinshu Katayama, Jun Shima, Ken Tonai, Kansuke Koyama, Shin Nunomiya

Sci Rep· April 2021

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Inhibition of PI3Kδ Enhances Poly I:C-Induced Antiviral Responses and Inhibits Replication of Human Metapneumovirus in Murine Lungs and Human Bronchial Epithelial Cells.
Akitaka Fujita, Keiko Kan-O, Ken Tonai, Norio Yamamoto, Tomohiro Ogawa

Front Immunol· March 2021

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Predictive factors for successful INTELLiVENT-ASV® use: a retrospective observational study.
Shinshu Katayama, Ken Tonai, Jun Shima, Kansuke Koyama, Shin Nunomiya

BMC Anesthesiol· April 2020

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Biomarker profiles of coagulopathy and alveolar epithelial injury in acute respiratory distress syndrome with idiopathic/immune-related disease or common direct risk factors.
Kansuke Koyama, Shinshu Katayama, Ken Tonai, Jun Shima, Toshitaka Koinuma

Crit Care· August 2019

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Influence of contrast media on renal function and outcomes in patients with sepsis-associated acute kidney injury: a propensity-matched cohort study.
Yuya Goto, Kansuke Koyama, Shinshu Katayama, Ken Tonai, Jun Shima

Crit Care· July 2019

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Thrombomodulin, Plasminogen Activator Inhibitor-1 and Protein C Levels, and Organ Dysfunction in Sepsis.
Shinshu Katayama, Kansuke Koyama, Jun Shima, Ken Tonai, Yuya Goto

Crit Care Explor· May 2019

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