Korean Journal of Anesthesiology

Effect of chemotherapy on effect-site concentration of propofol for loss of consciousness in patients with colorectal cancer: Seunghee Ki, Yongwon Cho, Youngkyung Choi, Sehun Lim, Myounghun Kim, et al.; Korean J Anesthesiol. 2022;75(2):160-167.

Review Article

February 17, 2022

Different perspectives for monitoring nociception during general anesthesia

Pablo Martinez-Vazquez, Erik Weber Jensen

Korean J Anesthesiol. 2022;75(2):112-123.

Safe anesthesia is achieved using objective methods that estimate the patient’s state during different phases of surgery. A patient’s state under anesthesia is characterized by three major aspects, which are linked to the main effects produced by each of the families of anesthetic agents administered: hypnosis, analgesia, and muscular relaxation. While quantification techniques designed to assess muscular relaxation under neuromuscular blocking agents have a relatively long history with a high degree of standardization and understanding (e.g., the train-of-four), the knowledge and techniques used to the depth of hypnosis assessment suffer from a lesser degree in both standardization and interpretation due to brain complexity. The problem of standardization and interpretation in...

Review Article

February 8, 2022

How general anesthetics work: from the perspective of reorganized connections within the brain

Teo Jeon Shin, Pil-Jong Kim, Bernard Choi

Korean J Anesthesiol. 2022;75(2):124-138.

General anesthesia is critical for various procedures and surgeries. Despite the widespread use of anesthetics, their precise mechanisms remain poorly understood. Anesthetics inevitably act on the brain, primarily through the modulation of target receptors. Even if the action is specific to an individual neuron, however, long-range effects can occur due to the tremendous interconnectedness of neuronal activity. The strength of this connectivity can be understood using mathematical models that allow for the study of neuronal connectivity dynamics. These models also allow researchers to develop hypotheses on the candidate mechanisms of action of different types of anesthesia. This review highlights the theoretical background associated with the study of the mechanisms of...

Statistical Round

March 3, 2022

The principles of presenting statistical results using figures

Jae Hong Park, Dong Kyu Lee, Hyun Kang, Jong Hae Kim, Francis Sahngun Nahm, et al.

Korean J Anesthesiol. 2022;75(2):139-150.

Tables and figures are commonly adopted methods for presenting specific data or statistical analysis results. Figures can be used to display characteristics and distributions of data, allowing for intuitive understanding through visualization and thus making it easier to interpret the statistical results. To maximize the positive aspects of figure presentation and increase the accuracy of the content, in this article, the authors will describe how to choose an appropriate figure type and the necessary components to include. Additionally, this article includes examples of figures that are commonly used in research and their essential components using virtual data.

Clinical Research Article

October 20, 2021

Noninvasive cardiac output measurements are inaccurate in patients with severe aortic valve stenosis undergoing transcatheter aortic valve implantation

Musashi Yahagi, Kyuma Omi, Takuma Maeda

Korean J Anesthesiol. 2022;75(2):151-159.

Background: Noninvasive cardiac output (CO) measured using ClearSight™ eliminates the need for intra-arterial catheter insertion. The purpose of this study was to examine the accuracy of non-invasive CO measurement in patients with severe aortic valve stenosis (AS). Methods: Twenty-eight patients undergoing elective transcatheter aortic valve implantation were prospectively enrolled in this study. The CO was simultaneously measured twice before and twice after valve deployment (total of four times) per patient, and the CO was compared between the ClearSight (COClearSight) system and the pulmonary artery catheter (PAC)...

Clinical Research Article

September 17, 2021

Effect of chemotherapy on effect-site concentration of propofol for loss of consciousness in patients with colorectal cancer

Seunghee Ki, Yongwon Cho, Youngkyung Choi, Sehun Lim, Myounghun Kim, et al.

Korean J Anesthesiol. 2022;75(2):160-167.

Background: The depth of anesthesia is an essential factor in surgical prognosis. The neurotoxic effect of chemotherapeutic drugs affects the sensitivity to anesthetics. This study was conducted to determine whether the effect-site concentration (Ce) of propofol for loss of consciousness (LOC) differs in patients undergoing preoperative chemotherapy. Methods: A total of 60 patients scheduled for surgery for colorectal cancer under general anesthesia were included in this study. Patients who had received chemotherapy comprised the experimental (C) group, and those without a previous history of chemotherapy comprised the control (N) group....

Clinical Research Article

December 16, 2021

Delphi consensus on the American Society of Anesthesiologists’ physical status classification in an Asian tertiary women’s hospital

Tarig Osman, Eileen Lew, Ban L. Sng, Rajive Dabas, Konstadina Griva, et al.

Korean J Anesthesiol. 2022;75(2):168-177.

Background: The American Society of Anesthesiologists (ASA) score is generated based on patients’ clinical status. Accurate ASA classification is essential for the communication of perioperative risks and resource planning. Literature suggests that ASA classification can be automated for consistency and time-efficiency. To develop a rule-based algorithm for automated ASA classification, this study seeks to establish consensus in ASA classification for clinical conditions encountered at a tertiary women’s hospital. Methods: Thirty-seven anesthesia providers rated their agreement on a 4-point Likert scale to ASA scores assigned to items via the Delphi technique. After...

Clinical Research Article

November 4, 2021

Subanesthetic intravenous ketamine vs. caudal bupivacaine for postoperative analgesia in children undergoing infra-umbilical surgeries: a non-inferiority randomized, single-blind controlled trial

Alok Kumar Sahoo, Satyajeet Misra, Bikram Kishore Behera, Anand Srinivasan, Sritam Swarup Jena, et al.

Korean J Anesthesiol. 2022;75(2):178-184.

Background: Subanesthetic intravenous (IV) ketamine acts as an analgesic and has opioid-sparing effects, particularly for acute postoperative pain; however, its effectiveness in children is understudied. The primary aim of this study was to evaluate the non-inferiority of subanesthetic IV ketamine vs. caudal bupivacaine for postoperative analgesia in children undergoing infraumbilical surgery. Methods: Children aged < 6 years were enrolled in this single-blind study and randomized to receive either subanesthetic IV ketamine (0.3 mg/kg) or caudal 0.125% bupivacaine (1 ml/kg) along with general anesthesia. Postoperative pain was assessed using...

Do we need to adjust the effect-site concentration of propofol in patients undergoing chemotherapy? Ki Tae Jung Korean J Anesthesiol. 2022;75(2):109-111. Editorial March 8, 2022 Full text PubReader ePub PDF	Different perspectives for monitoring nociception during general anesthesia Pablo Martinez-Vazquez, Erik Weber Jensen Korean J Anesthesiol. 2022;75(2):112-123. Review Article February 17, 2022 Full text PubReader ePub PDF PDF(Korean)
How general anesthetics work: from the perspective of reorganized connections within the brain Teo Jeon Shin, Pil-Jong Kim, Bernard Choi Korean J Anesthesiol. 2022;75(2):124-138. Review Article February 8, 2022 Full text PubReader ePub PDF PDF(Korean)	The principles of presenting statistical results using figures Jae Hong Park, Dong Kyu Lee, Hyun Kang, Jong Hae Kim, Francis Sahngun Nahm, EunJin Ahn, Junyong In, Sang Gyu Kwak, Chi-Yeon Lim Korean J Anesthesiol. 2022;75(2):139-150. Statistical Round March 3, 2022 Full text PubReader ePub PDF PDF(Korean) Supplementary Material
Noninvasive cardiac output measurements are inaccurate in patients with severe aortic valve stenosis undergoing transcatheter aortic valve implantation Musashi Yahagi, Kyuma Omi, Takuma Maeda Korean J Anesthesiol. 2022;75(2):151-159. Clinical Research Article October 20, 2021 Full text PubReader ePub PDF PDF(Korean) Supplementary Material	Effect of chemotherapy on effect-site concentration of propofol for loss of consciousness in patients with colorectal cancer Seunghee Ki, Yongwon Cho, Youngkyung Choi, Sehun Lim, Myounghun Kim, Jeonghan Lee Korean J Anesthesiol. 2022;75(2):160-167. Clinical Research Article September 17, 2021 Cited By 1 Full text PubReader ePub PDF PDF(Korean) Supplementary Material
Delphi consensus on the American Society of Anesthesiologists’ physical status classification in an Asian tertiary women’s hospital Tarig Osman, Eileen Lew, Ban L. Sng, Rajive Dabas, Konstadina Griva, Josip Car Korean J Anesthesiol. 2022;75(2):168-177. Clinical Research Article December 16, 2021 Full text PubReader ePub PDF PDF(Korean)	Subanesthetic intravenous ketamine vs. caudal bupivacaine for postoperative analgesia in children undergoing infra-umbilical surgeries: a non-inferiority randomized, single-blind controlled trial Alok Kumar Sahoo, Satyajeet Misra, Bikram Kishore Behera, Anand Srinivasan, Sritam Swarup Jena, Manoj Kumar Mohanty Korean J Anesthesiol. 2022;75(2):178-184. Clinical Research Article November 4, 2021 Full text PubReader ePub PDF PDF(Korean)
The novel continuous bilateral parascapular sub-iliocostalis plane block for thoracic spinal surgery Carlos Rodrigues Almeida, Lígia S. Vieira, Emília M. Francisco, Pedro F. Antunes Korean J Anesthesiol. 2022;75(2):185-187. Letter to the Editor November 22, 2021 Full text PubReader ePub PDF	Efficacy of ultrasound-guided transversalis fascia plane block in pediatric ureteroneocystostomy surgery Uğur Peksöz, Ahmet Murat Yayık, Erkan Cem Çelik Korean J Anesthesiol. 2022;75(2):188-190. Letter to the Editor November 4, 2021 Full text PubReader ePub PDF
Utility of a novel airway collar for electroconvulsive therapy: a hands-free technique Balaji Vaithialingam Korean J Anesthesiol. 2022;75(2):191-192. Letter to the Editor December 9, 2021 Full text PubReader ePub PDF	Is the deep supraspinatus muscle plane block and suprascapular nerve block the same approach? A cadaveric nomenclature study Basak Altiparmak, Bahadir Ciftci, Bahar Tekin, Bayram Ufuk Sakul, Haci Ahmet Alici Korean J Anesthesiol. 2022;75(2):193-195. Letter to the Editor December 29, 2021 Full text PubReader ePub PDF