1. Is there a role for pregabalin as premedication in pediatric anesthesia?

   • Jessica Nghiem
   • Stephen C. Brown
   • Kazuyoshi Aoyama

   Editorial 09 April 2021 Pages: 775 - 777

2. Practical guidelines for the response to perioperative anaphylaxis

   • Tomonori Takazawa
   • Ken Yamaura
   • The Working Group for the Preparation of Practical Guidelines for the Response to Anaphylaxis, Safety Committee of the Japanese Society of Anesthesiologists

   Guideline 14 October 2021 Pages: 778 - 793

   

3. Oral acetaminophen as an adjunct to continuous epidural infusion and patient-controlled epidural analgesia in laboring parturients: a randomized controlled trial

   • Reecha Panghal
   • Sukanya Mitra
   • Bharti Goel

   Original Article 27 July 2021 Pages: 794 - 800

   

4. Central venous catheterization site choice based on anatomical landmark technique: a systematic review and meta-analysis

   • Yang Gu
   • Keting Min
   • Xin Lv

   Original Article 02 August 2021 Pages: 801 - 810

   

5. A two-handed airway maneuver of mandibular advancement and mouth opening in the neutral neck position for immobilization of the cervical spine

   • Atsushi Sawada
   • Gen Ochiai
   • Michiaki Yamakage

   Original Article 28 July 2021 Pages: 811 - 817

   

6. Allopurinol attenuates postoperative pain and modulates the purinergic system in patients undergoing abdominal hysterectomy: a randomized controlled trial

   • André P. Schmidt
   • Enderson D. de Oliveira
   • Diogo O. Souza

   Original Article 14 August 2021 Pages: 818 - 826

   

7. Peripheral oxygen saturation to inspiratory oxygen fraction ratio-based identification of critically ill coronavirus disease patients for early therapeutic interventions

   • Masaru Shimizu
   • Satoru Hashimoto

   Original Article 15 August 2021 Pages: 827 - 836

   

8. Changes in peripheral perfusion index during intraoperative end-expiratory occlusion tests do not predict the response to fluid administration in patients undergoing lung protective ventilation

   • Yusuke Iizuka
   • Masamitsu Sanui
   • Alan Kawarai Lefor

   Original Article 19 August 2021 Pages: 837 - 843

   

9. Postoperative neurological complications after brachial plexus block: a retrospective study conducted at a teaching hospital

   • Pablo Oliver-Fornies
   • Juan Pablo Ortega Lahuerta
   • Agustin Sancho-Saldana

   Original Article 25 August 2021 Pages: 844 - 853

   

10. Intraoperative panic attack in patients undergoing awake craniotomy: a retrospective analysis of risk factors

    • Kotoe Kamata
    • Takashi Maruyama
    • Makoto Ozaki

    Original Article 17 August 2021 Pages: 854 - 861

11. The short-term effect of COVID-19 pandemic on disability, pain intensity, psychological status, and exercise habits in patients with chronic pain

    • Aki Fujiwara
    • Keisuke Watanabe
    • Masahiko Kawaguchi

    Original Article 25 August 2021 Pages: 862 - 869

    

12. Clinically relevant concentration of propofol and benzodiazepines did not affect in vitro angiogenesis

    • Kazumi Takaishi
    • Yasusei Kudo
    • Hiroshi Kitahata

    Original Article 28 August 2021 Pages: 870 - 878

    

13. Peripheral nerve block use in ankle arthroplasty and ankle arthrodesis: utilization patterns and impact on outcomes

    • Jimmy J. Chan
    • Evan Garden
    • Ettore Vulcano

    Original Article 04 September 2021 Pages: 879 - 888

    

14. The relationship between core temperature and perioperative shivering during caesarean section under intrathecal anesthesia with bupivacaine and ropivacaine: a randomized controlled study

    • Guangju Feng
    • Yu Wang
    • Shanglong Yao

    Original Article Open access 02 September 2021 Pages: 889 - 895

    

15. Tocilizumab in patients with COVID-19: which patient, time, and dose?

    • Ahmed Hasanin
    • Maha Mostafa

    Review Article 15 July 2021 Pages: 896 - 902

16. Adrenal function/dysfunction in critically ill patients: a concise narrative review of recent novel insights

    • Greet Van den Berghe

    Review Article 24 July 2021 Pages: 903 - 910

    

17. Effects of intrathecal opioids on cesarean section: a systematic review and Bayesian network meta-analysis of randomized controlled trials

    • Hiroyuki Seki
    • Toshiya Shiga
    • Takashi Ouchi

    Review Article 02 August 2021 Pages: 911 - 927

    

18. Oxygen therapy for critically Ill and post-operative patients

    • Paul J. Young
    • Daniel Frei

    Invited Review Article 06 September 2021 Pages: 928 - 938

19. Self-coiling catheter for continuous interscalene block

    • Yuki Aoyama
    • Shinichi Sakura
    • Kotaro Gunji

    Letter to the Editor 15 September 2021 Pages: 939 - 940

    

20. Acknowledgment to reviewers

    Acknowledgment 15 October 2021 Pages: 941 - 943